best contol for capturing steaming and displaying streaming input?

TheMSsForum.com: The Microsoft Software Forum

The MSS Forum ‹ Winforms
- Archive
  - Biz
  - MCSE
  - CRM
  - Drivers
  - Framework
  - ADO
  - ASP
  - Compact
  - Forms
  - Dotnet
  - C#
  - VB
  - FontpageGen
  - Excel
  - WorkSheet
  - Exchange
  - Setup
  - Fox
  - Fontpage
  - ASP
  - IIS
  - Entourage
  - Money
  - Messanger
  - PocketPC
  - Powerpoint
  - Project
  - Publisher
  - Excel
  - VB
  - Security
  - Portal
  - Services
  - SQLServerDev
  - SVCS
  - SQLServer
  - VB
  - VC
  - MFC
  - ExcelGen

- Previous
  - 1
    - Creating a 1bpp mask from a byte array Hi First of, I am posting to this newsgroup as it seemed best suited even though I am writing C++ for a standard Windows application. The application uses GDI+ which forms the basis of the System.Drawing namespace...anyway here goes: I am trying to create a 1 bit per pixel mask to use as an overlay. The data for the mask i generated dynamically based on user input and is available as a byte array. I get the first failure when trying to create the mask bitmap, the code is a follows: /** * Utiliy method, creates a mask bitmap and modifes the palette accordingly. * @param size Size of the mask. * @param color Color of the mask. * @param pixels The pixels. */ Bitmap* createMask( const Size& size, const Color& color, Byte* pixels ) { Bitmap* mask = new Bitmap( size.width, size.height, ((size.width+3)>>2)*4/8, PixelFormat1bppIndexed, pixels ); UInt paletteSize = mask->GetPaletteSize(); if( paletteSize > 0 ) { ColorPalette* palette = (ColorPalette*)malloc( paletteSize ); mask->GetPalette( palette, paletteSize ); if( palette->Count == 2 ) { palette->Entries[0] = Gdiplus::Color::Black; palette->Entries[1] = Gdiplus::Color::MakeARGB( color.GetA(), color.GetR(), color.GetG(), color.GetB() ); } mask->SetPalette( palette ); free( palette ); } return mask; } Since that didn't work, I tried letting GDI+ create a mask bitmap of the specified size and the copy the pixels into that bitmap. But when I try to display the image I either get nothing or a GPF. My display code is very simple: // Bitmap *maskBitmap; // Defined elsewhere Graphics g( hDC ); g.DrawImage( maskBitmap, 0, 0 ); So it basically just creates Graphics object and attempts to draw the image. The latter fails however... Teis Johansen Tag: best contol for capturing steaming and displaying streaming input? Tag: 86118
  - 2
    - HELP NEEDED REGARDING MAKING OTHER LANGAUGE (i.e. HINDI)ENABLED WINDOWS APPLICATION IN .NET (Type your message here) -------------------------------- From: kinshuk kukreti hi every one i am new to .net development my problem is that i want to make a windows application which could enable the user to enter data in HINDI language i have seen their is some property of form like LOcalizable ,language,IME Mode and of text box like IME MOde what i am doing is using MAngal font Which is used for Hindi Language for text box and setting its IME Mode property to True at design time i'm also setting IME MODE property of form to true and also setting LOCAlizable to true and LAnguage property to HINDI i have also installed the IME 1.1 it is working fine with the MICROsoft Word and showing a bar which displays Help etc. But in .NET it not showing anything but at run time i'm not getting the desired results does any body here can help me i'm sure i'm wrong some where ----------------------- Posted by a user from .NET 247 (http://www.dotnet247.com/) <Id>WAKtCPMagUiZGjwvLxsVrg==</Id> Tag: best contol for capturing steaming and displaying streaming input? Tag: 86116
  - 3
    - making forms larger than screen size (Type your message here) -------------------------------- From: Zaher Zeidan is there a way to resize a form so that it's bigger than the screen size of the windows?? I mean if you run your windows with 780x1024 resolution you won't be able to set your height or width to any thing larger than this.. this is really stupid from the IDE to prevent developers from resizing the form larger than the screen area since this would enable you to get a lot of space in design time and/or using scroll bars to put lot of controls in one window.. Old Visual Studio didn't have this limitation.. anyone knows a workaround for this??? ----------------------- Posted by a user from .NET 247 (http://www.dotnet247.com/) <Id>/ORUU75l20+l5QvA6bsPPg==</Id> Tag: best contol for capturing steaming and displaying streaming input? Tag: 86114
  - 4
    - CheckedListBox::SetItemChecked will not display properly on TabCon Hi all I have this checkedlistbox that appears on a winform that has a tabstrip control. The tabstrip control has say more thatn 2 tabs. On the first tab there is a checkedlistbox. The checkedlistbox first loads all possible items from a database; say 10 options total for a user to select. I then make another call to a database table that has the previously selected options for the checkedlistbox. All the data comes back from the database fine. I am able to use the SetItemChecked method to set which ever items in teh checkedlistbox as checked, but when it finally is rendered on the screen, none of the checked items show as checked. If I move the checkedlistbox to another tab that is not to display at the time of rendering for the form, I can select that tab and the items are checked. I am wondering if any of you have seen anything similar to this. Thanks for any assitance. Tag: best contol for capturing steaming and displaying streaming input? Tag: 86113
  - 5
    - How to change the font in the grid? My textboxes use Tahoma, 9. I want to use the same for my grid. Is is possible? How do I do this? I found this: DataGrid1.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) in another forum, but I'm getting "'Point' is not a member of 'System.Drawing.GraphicsUnit'." If I change Point to Pixel, I get "Overload resolution failed because no accessible 'New' accepts this number of arguments." Tag: best contol for capturing steaming and displaying streaming input? Tag: 86106
  - 6
    - How to make the gray area of the grid white? I'm developing an application for Pocket PC in VB .NET. My grid can contain up to 10 rows, but my table has only 2 and I see the dark gray area. Is there a way to change the color of it? 'DataGrid1.BackgroundColor' works for a Windows Application, but not Smart Device Application... Tag: best contol for capturing steaming and displaying streaming input? Tag: 86105
  - 7
    - Validating event not firing for a checkbox Hi, I am generically adding a handler for the Validating event of various controls. When added to a checkbox, the event never fires. Any solution here? Tag: best contol for capturing steaming and displaying streaming input? Tag: 86104
  - 8
    - Data path changes after saving files with SaveFileDialog Using VB.NET I have the path to my Access file stored in an App.config file: <add key="constring" value="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Data/METL.mdb;Persist Security Info=False"/> I usually set the connection like this: '* Get the appSettings constring value (set in the web.config) strConstring = System.Configuration.ConfigurationSettings.AppSettings("constring") '* Connects to database ocnConnection = New OleDb.OleDbConnection(strConstring) After creating an Excel file and saving it to a folder other than the application folder, my database connections always try to find the database file in the folder the Excel file was saved to. If dlgSaveFile.ShowDialog() = DialogResult.OK Then Excel.DisplayAlerts = False Excel.AlertBeforeOverwriting = False Excel.ActiveWorkbook.SaveAs(dlgSaveFile.FileName) Excel.ActiveWorkbook.Close() Else Excel.ActiveWorkbook.Close(False) End If Thanks, Sacha Tag: best contol for capturing steaming and displaying streaming input? Tag: 86103
  - 9
    - Drag a tree view node on to a richedit I want to be able to drag a treeview node, drop it on to a rich edit box and when that event occures, insert some text into the rich edit at the location that the node was dropped. Possible? Any hints on how to do this, as I'm not sure where to start. Tag: best contol for capturing steaming and displaying streaming input? Tag: 86101
  - 10
    - Windows app access db internet Hi, I built a windows form client app that access a db on a network. Now I was wondering how can I set it up so that the app accesses the database through the web? I don't want to rebuild the client app into an asp.net app. Maybe I could or should use Web Services that sits on a web server with database and do my updating through this route. What do you guys/gals think? Thanks, JJ Tag: best contol for capturing steaming and displaying streaming input? Tag: 86099
  - 11
    - WinForm Behavior Hi. I´m developing an MDI aplication and I have a base form from where all child windows inherits. The issue is that all the controls I place in the inherited child form at design time use say Arial 12 font and the textboxes are 20pixels hi, however at runtime everything ends up twice as large than designed, like Arial 16 and textboxes 40pixels hi. So far this is cool because I infact need to adjust the size of the controls all over the aplication according to the resolution it is being running on. However I don't know what feature is that and need to know what it is in order to control it! Any ideas? is it the base form used by the child windows or is something on the MDI container that somehow "inherits" some property to the controls the contain? Thanks in advance, Nando Tag: best contol for capturing steaming and displaying streaming input? Tag: 86095
  - 12
    - Multirow listview (sort of) I have a problem with my windows form. I want to display items that doesn't fit on one row in a listview. I would like to find a control which enables me to add all my columns but one to the first row and the last column on the second row. If it was a html-table an item would look like this <tr><td>Column 1</td> <td>Column 2</td> <td>Column 3</td> </tr> <tr> <td colspan="3">Column 4. Big.</td> </tr> It would be nice if the control would be similar to a listview in Details-view (able to change the width and sort on the columns in the first row). /nisse Tag: best contol for capturing steaming and displaying streaming input? Tag: 86093
  - 13
    - What happens when WindowState =Minimized ? Hi, i found unusal things happening when Program main window is minimized. I'm writing large programm on C# and having problem whith memory size allocated bu program. Every time i use some dialog's ShowDialog() the memory size of process increases. But ones i minimize main window memory size decreases significantly (for example : program that was just loaded whith 2 nonmodal dialogs takes 35 MB, after Minimize and Restore it becomes 5 MB after restoring comes 8MB). My questions are : Which actions are take when window is minimized ? How can I reproduse these actions in order to decrease used memory size (Without Minimize & Restore)? I tried with GC.Collect() it doesnt help. Please help.. I need it very urgent. Giga Tag: best contol for capturing steaming and displaying streaming input? Tag: 86081
  - 14
    - An Application's forms Is it possible to get a reference to a collection of all an Application's loaded forms? I want to do something like... For each Form in Application.Forms Form.ResetLocation Next Form Tag: best contol for capturing steaming and displaying streaming input? Tag: 86080
  - 15
    - How to import a text file from a WinForms to a db How to import a text file from a WinForms to db some one cam help me? marco Tag: best contol for capturing steaming and displaying streaming input? Tag: 86078
  - 16
    - Skip LinkLabel in TAB order I have designed a custom control derived from UserControl which contains a LinkLabel and a TextBox. If the user uses the TAB key to move the focus to my custom control I want the TextBox to get the focus and not the LinkLabel. Therefore I set the TabStop property of the LinkLabel control to False (in the constructor of my custom control, after InitializeComponent()). However, the TabStop property of the LinkLabel is ignored and it still gets the focus. As a workaround I tried to override OnEnter of my custom control: Protected Overrides Sub OnEnter(ByVal e As System.EventArgs) myTextBox.Focus() End Sub Unfortunately this doesn't work either. The TextBox gets the focus but immediately afterwards the focus moves to the LinkLabel. Overriding OnGotfocus results in the same behaviour. How could I prevent the LinkLabel to get the focus if the user uses the TAB key to move the focus to my custom control? Thanks for any ideas, Guido Tag: best contol for capturing steaming and displaying streaming input? Tag: 86077
  - 17
    - How to achieve the following functionality with Windows Forms ? I have a useful framework, written in a different language (PowerBuilder), which I'd like to replicate in .Net and Forms, but I'm unsure of how to approach it, as the Event model is being used different between the development environments. Currently we have data entry screens, whose columns have been "wired" into a class that performs checks on the entered data. As the user "leaves" a column, the specific check / business rule is carried out. A lot of the checks are common across all the screens and linking the column to the specific method to be called is as easy a giving the column the appropriate Name. How can I create my own framework which would allow an easy method of connecting / wiring the columns and the method checks together. I was planning on using DataGrids, but can change that if I need to. Tag: best contol for capturing steaming and displaying streaming input? Tag: 86075
  - 18
    - Inherited controls in worng location Please can you explain the following... I create a new form and add to it the following objects: a MainMenu, A MenuItem, a PictureBox and a Button. I change the button properties so that it is anchored BottomRight. I then create another form which inherits from the first. And I add to it another Button object. I then build my project. After the project has been built the first Button object's location moves up by one pixel! With some experimentation I've found this happens with other objects too but equally, in some circumstanmces, if doesn't happen at all. Can you explain why and whether there is a solution? Tag: best contol for capturing steaming and displaying streaming input? Tag: 86074
  - 19
    - Urgent Help : Re-select Combobox Value Dear all, I'm doing a winform project which uses "ComboBox" in one of the form. The winform contains "ComboBox" with the values as below: - this.ComboBox1.Items.AddRange(new object[] {"Apple", "Orange", "StrawBerry"}); Users will select on of the item from the combobox and stored into database. Users have the rights to update this record. The question is, how do I select the combobox value base on the value from database? I have used "SelectedText", "SelectedValue", but it doesn't seem to be working. Please Help. Thanks in advance. Cheers, Mae Tag: best contol for capturing steaming and displaying streaming input? Tag: 86068
  - 20
    - Form question (Re-usuable code) Is there any way of making the following code into a function so that I don't have to re-use the same code for all my buttons? I've tried to do this with the code at the bottom of my post but I get a build error saying 'Type FormToShow is not defined'. Cheers, Paul Private WithEvents Example1Form As frmDragDropFromExplorer Private WithEvents Example2Form As frmDragDrop Public Shared Sub Main() Application.EnableVisualStyles() Application.DoEvents() Application.Run(New frmMain) End Sub Private Sub btnExample1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExample1.Click Try Example1Form.Show() Catch Example1Form = New frmDragDropFromExplorer Example1Form.Show() Finally Example1Form.Focus() End Try End Sub ---- Tried this but got the error 'FormToShow is not defined' --- Private Sub btnExample1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExample1.Click ShowForm(Example1Form) End Sub Private Function ShowForm(ByVal FormToShow As Form) Try FormToShow.Show() Catch FormToShow = New FormToShow FormToShow.Show() Finally FormToShow.Focus() End Try End Function Tag: best contol for capturing steaming and displaying streaming input? Tag: 86062
  - 21
    - Form question (Re-usuable code) Is there any way of making the following code into a function so that I don't have to re-use the same code for all my buttons? I've tried to do this with the code at the bottom of my post but I get a build error saying 'Type FormToShow is not defined'. Cheers, Paul Private WithEvents Example1Form As frmDragDropFromExplorer Private WithEvents Example2Form As frmDragDrop Public Shared Sub Main() Application.EnableVisualStyles() Application.DoEvents() Application.Run(New frmMain) End Sub Private Sub btnExample1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExample1.Click Try Example1Form.Show() Catch Example1Form = New frmDragDropFromExplorer Example1Form.Show() Finally Example1Form.Focus() End Try End Sub ---- Tried this but got the error 'FormToShow is not defined' --- Private Sub btnExample1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExample1.Click ShowForm(Example1Form) End Sub Private Function ShowForm(ByVal FormToShow As Form) Try FormToShow.Show() Catch FormToShow = New FormToShow FormToShow.Show() Finally FormToShow.Focus() End Try End Function Tag: best contol for capturing steaming and displaying streaming input? Tag: 86061
  - 22
    - Windows Forms .NET 2.0 Advice Hello, I could use some advice. I have an application to build for a client the must be developed as a windows form application. This is an application that was written years ago using VB6 and an access database. I am an experienced .Net developer, version 1.1 but have built web applications, not windows forms. Should I consider .NET 2.0 for this application? I do not have windows form experience in .net so there will be a learning curve either way. Are there enough new features in .net 2.0 windows forms to consider this? Also, can you point me to any good docs on the subject. Thanks scott Tag: best contol for capturing steaming and displaying streaming input? Tag: 86060
  - 23
    - Windows Form and Windows Form User Control - Where Is The Method That Would corresspond To A Web Form Pre_Render Method Hello MyMainWebPage.aspx contains MyUserControl.ascx MyUserControl.ascx has a DataTable Property MyDataTable MyUserControl.ascx has a DataGrid which whose datasource is MyDataTable (or technically it's private accessor but that I don't think is an issue here) MyMainWebPage creates a DataTable dt . I then do a "MyUserControl.MyDataTable = dt" In order for the data to appear in the user control grid I must do the "MyUserControl.MyDataTable = dt" in the Pre_Render of MyWebPage I want to do this type of thing with a window form and windows user control. Where in the windows form user control would I bind the datatable? If I do it in the user controls page_load it does show the data in the datagrid? Thank you, Richard Tag: best contol for capturing steaming and displaying streaming input? Tag: 86051
  - 24
    - datagrid colum's nulltext property displayed in column when field not null I have a record displayed in datagrid and 2 columns says the text i've designated as the nulltext for those columns, but when i look at the data in the db, those values are listed there. is there some issue/bug that can be causing this? thanks Tag: best contol for capturing steaming and displaying streaming input? Tag: 86047
  - 25
    - Re: Using a string array as a datasource in a listbox "claire clinton" claire.clinton@cae.com wrote: > How do I add a string array as a llstbox datasource in the=20 > designer? I have a static class that defines an array and=20 > don't want to rebuild it in the designer. But I have to=20 > manually add the setting of the listbox datasource in code=20 > since the designer seems to only allow adding datasets as=20 > a datasource. This would be ok except when I go back to=20 > the designer, it converts the datasource assignment of the=20 > class array to an equivalent hard coded new string array=20 > and then adds an Item.AddRange assignment for the same=20 > string which then aborts when I run with the error=20 > message "Can't modify the Items collection when the=20 > DataSource property is set". I fix this by deleting the=20 > designer added code and putting my Datasource assignment=20 > back in. This is extremely annoying and will be=20 > unnacceptable for my final product. How can I prevent this=20 > from occuring. I am having a similar problem. Can anyone suggest how to solve it? Thanks, Alex. --=20 Please replace myrealbox with alexoren to reply by email. Tag: best contol for capturing steaming and displaying streaming input? Tag: 86045
- Next
  - 1
    - How can I turn off the ControlBox but still have Close in the upper right of a form? I know I've done this in the past but can't remember how I did it. How can I turn off the ControlBox but still have the Close X in the upper right of a Form? It's some combo of FixedDialog and ControlBox = false thanks mike Tag: best contol for capturing steaming and displaying streaming input? Tag: 86044
  - 2
    - Problem binding a listbox to an array Hello people, I am having problems binding a listbox to an array. Using Visual Studio 2003 with framework 1.1 That's the array: internal class Data { private Data() {} // static class public static readonly string[] states =3D { "Alabama", = "Alaska", "Arizona", /* ...*/ "Wisconsin", "Wyoming"}; } I also have a listbox on a form. The auto-generated code is: // listStates this.listStates.Name =3D "listStates"; this.listStates.TabIndex =3D 0; this.listStates.Location =3D new System.Drawing.Point(8, 16); this.listStates.Size =3D new System.Drawing.Size(100, 82); this.listStates.SelectionMode =3D = System.Windows.Forms.SelectionMode.MultiSimple; Question number 1: In the designer, the DataSource property of the listStates ListBox is = not editable. I would like to bind it to the array at design time but I cannot. I that supposed to be like that or am I missing something? Question number 2: When I added the following statement listStates.DataSource =3D Data.states; it appeared to work but I started having weird behaviour regarding the = selection. In particular, after selecting several items and unselecting all of = them, the first item would become selected. What am I doing wrong? Thank you, Alex. --=20 Please replace myrealbox with alexoren to reply by email. Tag: best contol for capturing steaming and displaying streaming input? Tag: 86043
  - 3
    - Change mouse cursor when points to specific cell I am creating a linklabel look-a-link in a datagrid with the following code by overriding the paint sub: If column = 0 Or column = 3 Or column = 4 Then Dim UnderlineFont As New Font(Me.DataGridTableStyle.DataGrid.Font, FontStyle.Underline) Dim rect As Rectangle = bounds Dim value As Object = GetColumnValueAtRow(source, rowNum) g.FillRectangle(backBrush, rect) g.DrawString(value.ToString, UnderlineFont, Brushes.Blue, RectangleF.FromLTRB(rect.X, rect.Y, rect.Right, rect.Bottom)) Else MyBase.Paint(g, bounds, source, rowNum, backBrush, foreBrush, alignToRight) End If I only create the linklabel look-alike in specific rows and columns. Now I have to have the cursor change to a 'hand' when the mouse moves over a cell. Note! I am creating the datagrid programmatically so I do not know what rows will contain a link (so I can not use the example by George Shepard in sycfusion). Also, there is NOT a mouseup or mousedown event to work with. I only want the cursor to change to a hand on a specific cell, not a whole row. I have been trying to do with with the datagrid.hittestinfo but can't seem the to get it. Thanks! -- Suz Tag: best contol for capturing steaming and displaying streaming input? Tag: 86041
  - 4
    - Delegate by Book Does anyone know about a good book that teaches Delegates or other types type threading? Tag: best contol for capturing steaming and displaying streaming input? Tag: 86038
  - 5
    - Switching between MDI child windows... I have an MDI application that is causing slight problems when I try to programmatically switch between child forms. When I press CTRL+TAB, the forms switch without much of a flicker at all. But when I try to fire an MDI switch from a toolbar button, I get a pretty noticeable flicker. The way I am changing forms is through the use of the Activate() method on the child form. For instance, nextChild.Activate(); I've tried using the ActivateMdiChild method, i.e., this.ActivateMdiChild(nextChild); but it doesn't seem to do anything. Is there something that I'm missing? I really just want to know how the framework Form class handles a CTRL+TAB key press so I can do the same thing. Thanks, Rich Tag: best contol for capturing steaming and displaying streaming input? Tag: 86037
  - 6
    - Smarthclient and crystal rpt viewer Morning all, How is this viewer suppose to be deployed in a Smartclient app. I keeping having my app looking for Keycodev2.dll. I have added this to my project and copied the dll to the folder on the webserver where my exe is. what do I have to do to get this to work. -- Deasun Home Site: www.tirnaog.com Check out: The Code Vault in my forums section. Tag: best contol for capturing steaming and displaying streaming input? Tag: 86036
  - 7
    - OnSetComplete, OnSet methods do not fire I have a datagrid bound to a strongly typed collection implementing iBindingList. When an item is added to the datagrid, OnInsertComplete fires just fine as I would expect it to. However, the OnSet and OnSetComplete methods don't seem to be firing at all. What I really want to do is: When a row is added to the list (NOT the first row), default one of the columns from the row above it. So when row2 gets added, it should automatically have the value from row1's column X. Any thoughts/suggestions? Tag: best contol for capturing steaming and displaying streaming input? Tag: 86035
  - 8
    - Capturing web page into a bitmap via WM_PRINT Hi, I'm copying the image of a web page into a bitmap by loading the page first into the web browser control (AxSHDocVw.AxWebBrowser) and then sending the WM_PRINT message to the control. Everything works fine except for pages that have Flash animations on them. In those cases the bitmap comes out as blank white. My code is similar to the code in this blog: http://kentb.blogspot.com/2005/03/nice-form.html . I don't think there's anything fundamentally wrong with the code as it works fine for web pages that have no Flash animations. I wonder if anyone has encountered similar problems? I'd be also happy if I could somehow disable the Flash animations via MSHTML if that fixed the problem. Regards, Sami Tag: best contol for capturing steaming and displaying streaming input? Tag: 86033
  - 9
    - Problems with custom events Browsing through some online tutorials, I've been tryingto add a custom event to an app I'm developing but I'm having a little problem. Simplifying the code down to the following (a form with a button that fires the event): namespace CustomEvent { public delegate void MyEventHandler(object sender, MyEventArgs e); /// <summary> /// Summary description for Form1. /// </summary> public class Form1 : System.Windows.Forms.Form { public event MyEventHandler MyEvent; protected virtual void OnMyEvent(MyEventArgs e) { MyEvent(this, e); } << snip template form code >> private void button1_Click(object sender, System.EventArgs e) { OnMyEvent(new MyEventArgs("Fred")); } } public class MyEventArgs: EventArgs { private string name; public MyEventArgs(string name) { this.name = name; } public string Name { get {return name;} } } } The problem I'm having is that the MyEvent(this, e); call fails in OnMyEvent(...) with the following error: "An unhandled exception of type 'System.NullReferenceException' occurred in CustomEvent.exe Additional information: Object reference not set to an instance of an object." Can anyone explain what I'm doing wrong? Cheers in advance Ant Tag: best contol for capturing steaming and displaying streaming input? Tag: 86032
  - 10
    - Capturing change to TextBox I want to simply capture changes to a TextBox and perform some processing when the user has edited the text. The TextChanged event fires even while the user is editing the text, but I only want to perform my validation when the user finished editing the text and moves off the field (tab, enter, mouse-click somewhere else, etc). The Validated event fires when the user moves off the field but fires even if the user does not change the text! I know I could save the "before value" of the text in a local variable in the Enter trigger and compare this to the current value in the Leave or Validate trigger but this is messy! There must be a simpler way surely. Someone please help! Tag: best contol for capturing steaming and displaying streaming input? Tag: 86026
  - 11
    - LIKE A TRANSACTION Hi, I've developped a windows application: I've added some code in order to lauch a merge replication in SQL. My question is: when this code is executing, is it possible to lock the application?? namely nobody can do anything until the code is ended! Thanks for your help :) Tag: best contol for capturing steaming and displaying streaming input? Tag: 86022
  - 12
    - Compiler error for MessageBox::Show I am getting a very strange compiler error for the following code: catch (OpenGLPanelException *openGLError) { //std::string * errorMessage = new std::string(openGLError->errorString); System::Windows::Forms::MessageBox::Show( "junk" ); //, "OpenGL Error", MessageBoxButtons::OK, //MessageBoxIcon::Exclamation ); exit(1); } The error message is: Compiling... Form1.cpp d:\MSDev\Shared Projects\OpenGLPanel\Test1\Form1.h(75) : error C2039: 'MessageBoxA' : is not a member of 'System::Windows::Forms' d:\MSDev\Shared Projects\OpenGLPanel\Test1\Form1.h(75) : error C2660: 'System::Windows::Forms::Control::Show' : function does not take 1 arguments d:\MSDev\Shared Projects\OpenGLPanel\Test1\Form1.h(246) : warning C4244: 'argument' : conversion from 'double' to 'GLfloat', possible loss of data Build log was saved at "file://d:\MSDev\Shared Projects\OpenGLPanel\Test1\Debug\BuildLog.htm" Test1 - 2 error(s), 1 warning(s) It appears to want to replace the text as if a #define is taking precedence somewhere. The include information is: #include <windows.h> #include <GL\gl.h> #include <iostream> namespace Test1 { using namespace System; using namespace System::ComponentModel; using namespace System::Collections; using namespace System::Windows::Forms; using namespace System::Data; using namespace System::Drawing; using namespace OhioState; If I do not fully scope it, the tooltip seems to indicate MessageBox is the MFC instance. Any help or suggestions? Roger Tag: best contol for capturing steaming and displaying streaming input? Tag: 86012
  - 13
    - Label and Button text not drawing (Type your message here) I have a small assembly that displays dialogs for logging in and message boxes if an error occurs. The button text and label text in the dialogs isn't drawing when the form is opened by either Dialog.ShowDialog() or MessageBox.Show(). In the case of a dialog, some of the labels appear and some do not. The button text doesn't appear for either dialogs or message boxes. The text draws correctly in the Designer. I was able to 'repair' the dialogs by deleting the controls and re-adding them to the form in the Designer. I don't have that option in a MessageBox. Anyone seen this behavior before? -------------------------------- From: Don Dusich ----------------------- Posted by a user from .NET 247 (http://www.dotnet247.com/) <Id>N41D2NHa90W/Q0PaoCYfpw==</Id> Tag: best contol for capturing steaming and displaying streaming input? Tag: 86009
  - 14
    - Sources for threads Hi all, Does anybody know where I can find some good examples of using threads in c#.net windows applications? Thanks Gav Tag: best contol for capturing steaming and displaying streaming input? Tag: 86006
  - 15
    - Can I run any app inside a "special" control I'm looking for a control which will allow me to run any app inside a Window/Panel/Tab Specifically I want to be able to save xml files created from XMLSpy to a database in a very specific format - I'd like to run XMLSpy in a window inside this app, then save/retrieve files to/from a sql server db. Not quite seamless integration, but better than nothing. Thanks Tag: best contol for capturing steaming and displaying streaming input? Tag: 86004
  - 16
    - Menu Shortcut Key Not working I have an MDI winform application. One of the menu items is using CTRL+U as the shortcut and it will not invoke the menu item. Here is a list of things I have tried to resolve the problem. 1) Tested CTRL+U in Word to make sure that the keys are working properly. Success 2) Re-Assigned the menu item a different shortcut. Success 3) Re-Assigned a different menu item the CTRL+U shortcut. Failure 4) Created a new project with one form, and a menu item with the CTRL+U shortcut. Success. 5) I can hot key to the menu item (the underllined letters for the menu items). Success 6) I can click on the menu item. Success Controls on the MDI Parent form 1) CDDB control 2) MCI control 3) menu items Controls on the MDI child form the menu item is affecting 1) Labels 2) text boxes 3) tab control with 2 pages 4) 2 grid controls (1 per page) 5) toolbar Any thoughts/suggestions on why CTRL+U won't work? Thanks, Greg Tag: best contol for capturing steaming and displaying streaming input? Tag: 86002
  - 17
    - Making it possible for user to move controls on form, how? How can I make it possible for a user to move a control on a form by selecting it and then using the arrow keys to move it to a new location? For instance suppose I have a form that represents the output of a cheque and I want the user to be able to move the date and amount fields so that they cn be printed out at the correct location on his preprinted cheque stock? Any help or a pointer to some sample code would be greatly appreciated. Thanks, RD Tag: best contol for capturing steaming and displaying streaming input? Tag: 86001
  - 18
    - ISDATE and Regional Settings -- John Tag: best contol for capturing steaming and displaying streaming input? Tag: 85999
  - 19
    - Refreshing Form on Process Hello, I have a windows application written in VB .NET which pulls a lot of data from different databases into one source. This often takes a long time and therefore I track the progress using a progress bar and a status bar. When the program is running and I use another application the form turns white and doesn't refresh itself until the process is complete. Could anyone advice me/provide a VB example of the best way to keep a windows form refreshed when running, but still restrict the user from setting off another process? Many thanks for your advice. Tag: best contol for capturing steaming and displaying streaming input? Tag: 85995
  - 20
    - Reusing GUI elements Hello people, I'm new at .NET development so forgive me if I ask about the obvious. There are several forms in my application that have similar groups of = controls. I would like to extract the UI and functionality into a single entity so = I can reuse it in the application. What is the easiest way to implement it? (I don't really want to create a standalone control since the "grouping" = only makes sense inside this particular application). Thank you, Alex. --=20 Please replace myrealbox with alexoren to reply by email. Tag: best contol for capturing steaming and displaying streaming input? Tag: 85992
  - 21
    - Nasty bug with OwnerDrawn context menus on a ComboBox Have a look at the code below. It's a really simple example where I have added two controls to a form, a textbox and a combo box. Both add owner drawn context menus to the controls, but the combobox will NOT draw custom drawn context menu item. I have tried EVERYTHING (deriving from MenuItem and even tried calling TrackPopupMenuEx directly), but it just won't work! I am currently reflecting over the combobox source code (oh joy!), but if anyone can help me, I will BE SOOOOO VERY GRATEFUL!!!! thanks andrew using System; using System.Drawing; using System.Diagnostics; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; namespace ComboContextBug { /// <summary> /// Summary description for Form1. /// </summary> public class Form1 : System.Windows.Forms.Form { private ComboTest comboBox1; private TextBoxTest textBox1; private System.Windows.Forms.Label label1; private System.Windows.Forms.Label label2; /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.Container components = null; public Form1() { // // Required for Windows Form Designer support // InitializeComponent(); // // TODO: Add any constructor code after InitializeComponent call // } /// <summary> /// Clean up any resources being used. /// </summary> protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } #region Windows Form Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { this.comboBox1 = new ComboContextBug.ComboTest(); this.textBox1 = new ComboContextBug.TextBoxTest(); this.label1 = new System.Windows.Forms.Label(); this.label2 = new System.Windows.Forms.Label(); this.SuspendLayout(); // // comboBox1 // this.comboBox1.Location = new System.Drawing.Point(180, 32); this.comboBox1.Name = "comboBox1"; this.comboBox1.Size = new System.Drawing.Size(121, 21); this.comboBox1.TabIndex = 0; this.comboBox1.Text = "comboBox1"; // // textBox1 // this.textBox1.Location = new System.Drawing.Point(180, 98); this.textBox1.Name = "textBox1"; this.textBox1.Size = new System.Drawing.Size(121, 20); this.textBox1.TabIndex = 1; this.textBox1.Text = "textBox1"; // // label1 // this.label1.Location = new System.Drawing.Point(8, 20); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(168, 52); this.label1.TabIndex = 2; this.label1.Text = "Right click this combo and you will see that the OwnerDrawn item does NOT appear!" + ""; // // label2 // this.label2.Location = new System.Drawing.Point(8, 86); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(168, 52); this.label2.TabIndex = 3; this.label2.Text = "Right click this textbox and you will see that the OwnerDrawn item DOES appear!"; // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(336, 157); this.Controls.Add(this.label2); this.Controls.Add(this.label1); this.Controls.Add(this.textBox1); this.Controls.Add(this.comboBox1); this.Name = "Form1"; this.Text = "Combo Context Menu Bug"; this.ResumeLayout(false); } #endregion /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.Run(new Form1()); } } public class ComboTest: ComboBox { public ComboTest() { base.ContextMenu = new ContextMenu(); MenuItem mnuOwnerDraw = new MenuItem(); mnuOwnerDraw.Text = "This text WILL NOT appear on a ComboBox!"; mnuOwnerDraw.OwnerDraw = true; mnuOwnerDraw.DrawItem +=new DrawItemEventHandler(mnuOwnerDraw_DrawItem); mnuOwnerDraw.MeasureItem +=new MeasureItemEventHandler(mnuOwnerDraw_MeasureItem); base.ContextMenu.MenuItems.Add(0, mnuOwnerDraw); MenuItem mnuNormalDraw = new MenuItem(); mnuNormalDraw.Text = "This text WILL appear!"; mnuNormalDraw.OwnerDraw = false; base.ContextMenu.MenuItems.Add(0, mnuNormalDraw); } private void mnuOwnerDraw_DrawItem(object sender, DrawItemEventArgs e) { MenuItem menu = sender as MenuItem; e.Graphics.DrawString( menu.Text, this.Font, SystemBrushes.ControlText, e.Bounds.X + 15, e.Bounds.Y ); } private void mnuOwnerDraw_MeasureItem(object sender, MeasureItemEventArgs e) { MenuItem menu = sender as MenuItem; string text = menu.Text; e.ItemWidth = (int)(e.Graphics.MeasureString(text, this.Font).Width) + 3; e.ItemHeight = (int)(e.Graphics.MeasureString(text, this.Font).Height) + 2; } } public class TextBoxTest: TextBox { public TextBoxTest() { base.ContextMenu = new ContextMenu(); MenuItem mnuOwnerDraw = new MenuItem(); mnuOwnerDraw.Text = "This text WILL appear on a Textbox!"; mnuOwnerDraw.OwnerDraw = true; mnuOwnerDraw.DrawItem +=new DrawItemEventHandler(mnuOwnerDraw_DrawItem); mnuOwnerDraw.MeasureItem +=new MeasureItemEventHandler(mnuOwnerDraw_MeasureItem); base.ContextMenu.MenuItems.Add(0, mnuOwnerDraw); MenuItem mnuNormalDraw = new MenuItem(); mnuNormalDraw.Text = "This text WILL appear!"; mnuNormalDraw.OwnerDraw = false; base.ContextMenu.MenuItems.Add(0, mnuNormalDraw); } private void mnuOwnerDraw_DrawItem(object sender, DrawItemEventArgs e) { MenuItem menu = sender as MenuItem; e.Graphics.DrawString( menu.Text, this.Font, SystemBrushes.ControlText, e.Bounds.X + 15, e.Bounds.Y ); } private void mnuOwnerDraw_MeasureItem(object sender, MeasureItemEventArgs e) { MenuItem menu = sender as MenuItem; string text = menu.Text; e.ItemWidth = (int)(e.Graphics.MeasureString(text, this.Font).Width) + 3; e.ItemHeight = (int)(e.Graphics.MeasureString(text, this.Font).Height) + 2; } } } Tag: best contol for capturing steaming and displaying streaming input? Tag: 85991
  - 22
    - Dangling process, when calling ShowDialog twice from Main hi, i've used jason clarks recommendations for handling unhandled exceptions in my winforms app (http://msdn.microsoft.com/msdnmag/issues/04/06/NET/default.aspx). if an unhandled exception happens, i open up an 'Error-Logger' form, which sends the exception to a web service. here is the relevant code: [STAThread] public static void Main() { try { SubMain(); } catch (Exception e) { HandleUnhandledException(e); } } public static void SubMain() { AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(OnUnhandledException); // CLR Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(OnGuiUnhandedException); // Windows Forms Application.Run(new MainForm()); } public static void HandleUnhandledException(Object o) { if(o == null) { MessageBox.Show("An unknown error has occurred", "Error"); return; } Exception ex = o as Exception; if (ex != null) new ErrorLogger(ex).ShowDialog(); } this approach works very well. the problem of a dangling process occurs if the user closes the ErrorLogger form before it has finished reporting the error. A ThreadAbortException happens (which i catch and ignore) in ErrorLogger, and the error logger form closes. if i then close the mainform, the process is left dangling in task manager with no windows open. this only happens if the user kills the errorlogger form. the errorLogger form calls the web service on a worker thread, but i am careful to Abort this thread in Dispose() and Form.Close() and even when the ThreadAbortException happens. is there any way for me to work around this? maybe the application is creating two UI threads because ShowDialog is called twice, and only one of those threads gets properly terminated when the application is closed? thanks for any help tim Tag: best contol for capturing steaming and displaying streaming input? Tag: 85989
  - 23
    - detecting instances of my App I want to allow running only one instance of my Application. How can I detect that a previous instance of my WinForm App is running in order to stop the second instance? -- thks Tag: best contol for capturing steaming and displaying streaming input? Tag: 85985
  - 24
    - Using The NativeWindow Class To Draw A GDI Type Circle On Top Of A DataGrid Possibly In The Override OnPaint I have a requirement to put a GDI style circle or rectangle border around the selected row of a datagrid/ It will overlap into the row above and below the selected row. Doing this in a the OnPaint of a subclassed DataGridTextBoxColum dos not seem like a practical way to do it. I have subclassed a DataGrid and overridden the OnPaint as such: protected override void OnPaint(PaintEventArgs pe) { base.OnPaint(pe); // Create pen. Pen blackPen = new Pen(Color.Green, 2); // Create location and size of rectangle. float x = 15.0F; float y = 53.0F; float width = 500.0F; float height = 20.0F; // Draw rectangle to screen. pe.Graphics.DrawRectangle(blackPen, x, y, width, height); } It works but has refresh problems. Last week Bob Powell [MVP] suggested that I use a NativeWindow class to solve this problem. I've just had the time to get back to this and not being a former C++ person, etc., etc., etc. maybe someone can help with this. The MSDN help screen for the NativeWindow class is this link: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemwindowsformsnativewindowclasstopic.asp It has an example and in the subclassed NativeWindow constructor it creates a button: public MyNativeWindow(Form parent) { ..see help example } Can someone advise me on where my code above that paints the Rectangle should go in this NativeWindow example? Tag: best contol for capturing steaming and displaying streaming input? Tag: 85977
  - 25
    - Creating DesignerVerbs for a Reflection.Emit-ed class for use in a PropertyGrid Hi, I've hit a bit of a brick wall in my use of the PropertyGrid control. I am writing a Windows Forms application that does the following: - dynamically create a class using Reflection.Emit - the class simply holds a number of properties ("Name", "Description", etc). - pass the class to a PropertyGrid control which then renders the properties for the user to edit. This is all working fine, and I have even added my own Category and Description attributes to the properties which are showing up successfully in the PropertyGrid. My problem is that I would also like to add a couple of DesignerVerbs to the class, so that I can offer "Add Property" and "Remove Property" functions in the PropertyGrid. I have set the CommandsVisibleIfAvailable flag on my PropertyGrid, and attempted to set the Designer attribute on my dynamically-created class. The Designer attribute points to a custom ComponentDesigner class, in which I have defined the DesignerVerbs. However, the verbs are not being shown in the PropertyGrid. I may have a lead in that the Attributes property of my TypeBuilder class still says "NotPublic" after I SetCustomAttribute. But does that mean the contents of the Attributes collection are not public, or that my class' only attribute is "NotPublic"? Any ideas on something I might have missed? Below is some example code, in the hope that it jogs someone's memory! I'd be happy to post anything else that may be relevant. Cheers Lee ********************************************** *** snippet from DynamicCmSchemaCreator.cs *** *** creates the DesignerAttribute using my *** *** custom ComponentDesigner class *** TypeBuilder typeBuilder = moduleBuilder.DefineType ( DynamicType, TypeAttributes.Class, typeof(Component) ); // Apply the Designer attribute, supplying our own ComponentDesign class CustomAttributeBuilder customAttributeBuilder = new CustomAttributeBuilder ( typeof(DesignerAttribute).GetConstructor(new Type[] { typeof(Type) }), new object[] { typeof(DynamicCmSchemaComponentDesigner) } ); typeBuilder.SetCustomAttribute(customAttributeBuilder); ******************************************* *** DynamicCmSchemaComponentDesigner.cs *** *** the componentdesigner I attach to *** *** the dynamic class *** public class DynamicCmSchemaComponentDesigner : ComponentDesigner { private const string AddPropertyVerb = "Add Property"; private const string RemovePropertyVerb = "Remove Property"; private DesignerVerbCollection verbs; private void OnAddPropertyVerb(object sender, EventArgs e) { System.Diagnostics.Debug.WriteLine("Processing Add Property"); } private void OnRemovePropertyVerb(object sender, EventArgs e) { System.Diagnostics.Debug.WriteLine("Processing Remove Property"); } public override DesignerVerbCollection Verbs { get { if (verbs == null) { verbs = new DesignerVerbCollection(); verbs.Add(new DesignerVerb(AddPropertyVerb, new EventHandler(OnAddPropertyVerb))); verbs.Add(new DesignerVerb(RemovePropertyVerb, new EventHandler(OnRemovePropertyVerb))); } return verbs; } } } **************************************** *** snippet from MainForm.cs *** *** creates the dynamic class and *** *** passes it to the propertygrid *** object dynamicCmSchema = DynamicCmSchemaCreator.CreateDynamicCmSchema ( node.CmSchema.Properties ); this.propertyGrid.SelectedObject = dynamicCmSchema; ******************************************* Tag: best contol for capturing steaming and displaying streaming input? Tag: 85969

I have a Windows forms application that is reading messages off off a queue,
and I want to stream them into a window to view. Currently I am using a
textbox classes/methods of textbox.Append(...) and textbox.ScrollToCaret()...

It seems that there is limit to the number of characters you can write to a
textbox...

I would appreciate any recommendations on the best contol/technique to used
to stream input into a form and to automatically advance the scrollbar as
input arrives. I want to capture several thousand lines before I cleanup...

thanks

Top

RE: best contol for capturing steaming and displaying streaming input? by AMercer

AMercer
Sat Apr 02 10:27:02 CST 2005

1. use a richtextbox vice a textbox for bulk text output.
2. to scroll to the bottom of text, set the rtb's SelectionStart =
Text.Length

"Jamie Holloway" wrote:

> I have a Windows forms application that is reading messages off off a queue,
> and I want to stream them into a window to view. Currently I am using a
> textbox classes/methods of textbox.Append(...) and textbox.ScrollToCaret()...
>
> It seems that there is limit to the number of characters you can write to a
> textbox...
>
> I would appreciate any recommendations on the best contol/technique to used
> to stream input into a form and to automatically advance the scrollbar as
> input arrives. I want to capture several thousand lines before I cleanup...
>
> thanks

Top

RE: best contol for capturing steaming and displaying streaming in by JamieHolloway

JamieHolloway
Sat Apr 02 11:11:02 CST 2005

Perfect and thanks AMercer. I appreciate the help.

"AMercer" wrote:

> 1. use a richtextbox vice a textbox for bulk text output.
> 2. to scroll to the bottom of text, set the rtb's SelectionStart =
> Text.Length
>
> "Jamie Holloway" wrote:
>
> > I have a Windows forms application that is reading messages off off a queue,
> > and I want to stream them into a window to view. Currently I am using a
> > textbox classes/methods of textbox.Append(...) and textbox.ScrollToCaret()...
> >
> > It seems that there is limit to the number of characters you can write to a
> > textbox...
> >
> > I would appreciate any recommendations on the best contol/technique to used
> > to stream input into a form and to automatically advance the scrollbar as
> > input arrives. I want to capture several thousand lines before I cleanup...
> >
> > thanks

Top