Finding controls on a form in another application

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  - 1
    - Snappy Rendering of Controls I have a situation where I'm hosting a number of complex controls within a form, but only showing one at a time. When the user clicks on a navigation button one or other of the controls is displayed. My problem is that, as the control is revealed (it's Visible property is set to True), it flashes quickly as parts of it are rendered (that is, I can see squares of white flashing until their BG colors a drawn etc). What's the correct appropach to take when revealaing a control to avoid this kind of thing? What I'd like is for it to just snap up in one go. Is there anything I can do??? Thank you! === Phil (Auckland | Aotearoa) Tag: Finding controls on a form in another application Tag: 74568
  - 2
    - Getting the popups above the running form. Hi, I have a form that scans my entire C: drive for some files. In order to show the status of scanning I use Application.DoEvents to show a label with the folder being scanned. All this runs fine. But whenever there is a popup from another application, that Popup comes below my running form. How can I make these popups get displayed above my form so that the User can see it as soon as it is popping up. TIA. Tag: Finding controls on a form in another application Tag: 74562
  - 3
    - Stacked panel controls I'm trying to do something simple and can't seem to get my way with the forms designer. My form is divided in two: left side a tree view control, right side a panel with splitter control inbetween. So far so good. Now I want to stack panel controls on the right side. The idea is that as I click on tree nodes on the left side, a particular panel is made visible. So all the panels have to have the form as the parent. Then I programatically set visibility of the panels in the select handler for the tree. I can get this working if I massage the code that the forms designer generates. However I can't seem to drop panels into the form such that all the panels are children of the form. Furthermore my hand massaged code is obliterated the next time I fool with the form. Is there another, simpler way to achieve my goals? Regards, Bob Rundle Tag: Finding controls on a form in another application Tag: 74561
  - 4
    - A default .resx file ? I'm developing a multi-language win32 app. It is working fine, I have 3 resource files, each containing all labels, messages etc in one specific language. The language files is loaded based on the CurrentUICulture that is on that specific machine. But I want to have a "default" language, let's say English. This language must be loaded if the user do not have support for "his" language. Thanks for all help! Svein Erik Tag: Finding controls on a form in another application Tag: 74559
  - 5
    - Reading registry key on another machine on a LAN This may be simple, but I have not figured out how to do it. I want to read from a file on another machine on my LAN. The location of that file is given in a registry key in HKEY_LOCAL_MACHINE on that machine. I know which machine it is and need to read the registry key from a program running on my computer. Any help much appreciated. Peter *** Sent via Devdex http://www.devdex.com *** Don't just participate in USENET...get rewarded for it! Tag: Finding controls on a form in another application Tag: 74558
  - 6
    - Grid with RightToLeft support Hi, Is there any third-party grid control with Right to Left support available on the net? I've tested dozens of them but non of them supports RTL proprely. Thanks in advance, Soheil Tag: Finding controls on a form in another application Tag: 74557
  - 7
    - Getting the value back from a combo box? Hi all, With some help from Jakob Christensen here, and also this article (for VB'ing it).. http://www.componentdesigns.com/library/article.asp?a=2 I 'think' I have managed to achieve what I want to do (which was to write both Text and a Value to each row in the combo box). My next problem is that I seem to be unable to then 'get' the value of the selected item in the combo box... :( Any help would be appreciated, the following code is being used : Public Class ComboBoxElement Dim m_ElementText As String Dim m_ElementValue As Integer Public Sub New(ByVal ElementText As String, ByVal ElementValue As Integer) m_ElementText = ElementText m_ElementValue = ElementValue End Sub Public ReadOnly Property ElementText() As String Get Return m_ElementText End Get End Property Public ReadOnly Property ElementValue() As String Get Return m_ElementValue End Get End Property Public Overrides Function ToString() As String Return ElementText End Function End Class And I'm setting the values with this in my page_load : ComboBox1.Items.Add(New ComboBoxElement("Please select a payment option...", 99)) ComboBox1.Items.Add(New ComboBoxElement("Weekly Paid (£14.95 admin cost for each week of use)", 1)) ComboBox1.Items.Add(New ComboBoxElement("Monthly Paid (£44.95 admin cost for each month of use)", 2)) I have managed to return the 'index' value for the selected item in the combo box, but then I dont seem to be able to find a way to use this to retrieve the text or the value from it (the value is what I am really after).. Your help is appreciated, Regards Rob Tag: Finding controls on a form in another application Tag: 74556
  - 8
    - minimising a modal form to taskbar Hi, I have a form which creates and shows another modal form (which I have turned off taskbar visibility) but when this 'child' form is minimized it goes to a small title window (like it would if it were an MDI child window) above the taskbar and the parent window is now visible but you can't click on it as the modal form is still active, just minimized. I hate this functionality as I would like that when this child window is minimised it disappears and it's parent minimizes to the taskbar. On clicking the minimized window in the taskbar, it maximises the parent and the child modal form as well. What is the best way to do this? Thanks Nev Tag: Finding controls on a form in another application Tag: 74555
  - 9
    - Main Menu - common code? Hi all, I am putting a small app together which will have 3 windows forms, the main menu across the top will be the same regardless of which form the user is on. I have noticed that as I built the first form it has added all of the 'protected with events' stuff for the main menu bits and bobs. I'm thinking that I would be better of with my main menu code somewhere seperate, just the once and then call it as needed for each form - any changes are then only done the once... Can someone suggest how I might do this please. Any help appreciated (new to .net and windows stuff - mainly worked on the web side of things with .net so far). Regards Rob Tag: Finding controls on a form in another application Tag: 74554
  - 10
    - Checkboxes in TreeView Controls I want to implement checkboxes in all child in a treeview EXCEPT all top most root nodes. TreeView control's CheckBoxes property implement this functionality to all nodes but not the specific one. how can I implement this one through nodes individually to some specific node? Thanks Tag: Finding controls on a form in another application Tag: 74552
  - 11
    - MDI Border Removed How do I refresh if MDIParent.Refresh/.Invalidate dont do anything? I want it to refresh immediatly after setting the style. This is how I removed the border. Public Shared Sub MDIInside3dBorder(ByVal mdi As Form, ByVal Flag As Boolean) If mdi Is Nothing Then Exit Sub If mdi.IsMdiContainer Then Dim x As String = " " Declares.GetClassName(mdi.Handle, x, x.Length) x = Replace(x, "Window.8", "MDICLIENT") Dim curstyle As Integer, newstyle As Integer Dim hwnd As IntPtr = Declares.FindWindowEx(mdi.Handle, IntPtr.Zero, x, vbNullString) If hwnd.Equals(hwnd.Zero) Then Exit Sub curstyle = Declares.GetWindowLong(hwnd, Constants.GWL_EXSTYLE) If Flag Then curstyle = curstyle Or Constants.WS_EX_CLIENTEDGE Else curstyle = curstyle And (Not Constants.WS_EX_CLIENTEDGE) End If newstyle = Declares.SetWindowLong(hwnd, Constants.GWL_EXSTYLE, curstyle) 'Refresh HERE with newstyle End If End Sub Thanks! Tag: Finding controls on a form in another application Tag: 74551
  - 12
    - Help me remember a vsnet framework ad? Access dev testimonial Within the last month or so, in a mag or on the net, I saw an add for what I think was a vbnet ide framework or addin where there was a testimonial from a user that said they were a long time MS Access developer and that they liked whatever framework it was. I have looked "everywhere" and can't find it again. Does this ring a bell with anyone? It could have been in an older mag, but I don't think so. Tag: Finding controls on a form in another application Tag: 74550
  - 13
    - Changing focus leads to increase in memory!!! I have observed that when I change the focus (Not minimize) from my .Net app to some other app and bring the focus back, the memory used and VM size increases slightly. I have observed the same behavior for some other .Net apps also. Why is this happening? Is there a memory leak somewhere in my app or is it something to do with framework? Is framework painting my GUI again or something like that? Tag: Finding controls on a form in another application Tag: 74547
  - 14
    - MDI Child / Dispose / GC / = null I have a mdi child in my app with a business object member variable. it seems that this business object exists until the application is ended, no matter i call GC.Collect(). (i did some reference counting + a weakreference static list in the business object to find out what is going on) If i put 'businessObject = null' in the dispose mehtod of the child form, the business object is destroyed as i want from the garbage collector but it can't be for real that i set any object to null in the dispose mehtod? Tag: Finding controls on a form in another application Tag: 74545
  - 15
    - DataGrid TableStyles... Is it possible to use DataGrid TableStyles with DataView as DataSoure? What MappingName I need to set? Tag: Finding controls on a form in another application Tag: 74539
  - 16
    - How to determine the width of a single character in TextBox? I am writing a Windows Forms application using Visual Studio.NET in C#. I am creating a control derived from TextBox that will need to invoke a block cursor (caret) during certain edit modes. The derived control is intended to contain numeric values; integers and floating point. I understand how to create and position a caret using CreateCaret() and SetCaretPos(), available in user32.dll. The control's font may vary from instance to instance so I want to make the caret have the correct width and height. I can get the height of the font by using either the TextBox.FontHeight property or the Font.Height property. However, I have not found a way to get the width of a character so that I can size the caret width appropriately. Since the control can contain a decimal point and a minus sign I would really like to determine the width of any individual character so that the caret does not overlap adjacent characters. How can I determine the width of a character at a given position in a TextBox? Thanks, Dave Tag: Finding controls on a form in another application Tag: 74535
  - 17
    - richtext to XML Hi all, I'm trying to build a little app. that allows users to paste copied text into a rich text box, then hit a button and out spits XML into another textbox. I'm mainly concerned with capturing font attributes like italic, bold, etc... from the rich text so I can output text with the appropriate XML nodes indicating the proper markup around the text in the second text box. I've done a few searches looking for code snippets and such but so far I'm not coming up with much. If anyone here could point me in the right direction to some resources on how to parse rich text I would be very appreciative. Thank you for you time. Tag: Finding controls on a form in another application Tag: 74528
  - 18
    - Wiring up events in a less-messy way I'm frustrated with the way I've been handling events previously inside WinForms apps. It always seems that I end up with the effect I call "AddHandler Hell". I would like to do things a little differently and try to apply a little more object-orientation to events; for a low-level example, I would like to have my main MDI form and some child forms enable and disable some buttons and controls based on the user's login status (logged in or logged out). What's the most efficient way to almost define an event globally, so that when my "UserAuthentication" class raises an event, say, "LoginStateChanged", that the main form and child forms can respond to it without having to individually wire up and keep track of each window? It almost seems like I should be able to define a central shared/static class that holds most application-wide events (i.e. an AppEvents class), and allow my UserAuthentication class to raise AppEvents's "LoginStateChanged" event. Can someone shed some light on this for me? Brandon Tag: Finding controls on a form in another application Tag: 74527
  - 19
    - Child Menus, what would the best way to do this Hopefully this will come out right but this is what I'd like Main Fruit ======= Squares |___by color |___Red |___Yellow |___by size |__Large |__Medium |__Small Circles Triangles Is there a way to have the sub menus attached to Circles and Triangles without manually adding each one in the code? Yes that would be merging right? ok now how can I determine who called Large Yellow or Small Red, do I have to do something like sender->parent->parent->text ? Thanks Tag: Finding controls on a form in another application Tag: 74526
  - 20
    - DataGrid transpose/invert Hi, Is there an easy way to transpose/invert a DataGrid? I'd like to be able to still bind the grid to a 'DataSource' and invert/transpose on the User Interface. Is this possible at all? Sorry to post this at multiple places but I really need to figure this out. Cheers Tag: Finding controls on a form in another application Tag: 74525
  - 21
    - Drag Drop Controls Hi all, I am writing an application using Visual C# .NET. Currently, I am developing some componets inherited from the System.Windows.Forms.Control, eg. a PictureBoxA. I want to make a draggable PictureBoxA, and a component, eg. another sub-class, PictureBoxB, to receive the dropped data carried by the PictureBoxA. I have searched Google and the MSDN Library, the typical solution is the Owner Form to capture the MouseDown Event and call the DoDragDrop Method. However, I am going to create a lot of instance of the PictureBoxA and PictureBoxB on the form. In this way, I have to create a lot of event handlers for all the instance of these objects. I am wondering if I can make it in a more object-oriented way such that both PictureBoxA and PictureBoxB communicate by theirself without the Owner Form to handles their drag-drop events. In this time, I override the draggable control to move with the cursor after a MouseDown, and also override 'receiver' OnDragOver routine. However, therer is no drag drop event occur to the receiver...... So, how can I implement this drag drop event so that after a mouse down on A, control B can receive the DragOver Event? Any help gladly appreciated. Thanks in advance. Tony Tag: Finding controls on a form in another application Tag: 74523
  - 22
    - DBNull I'm not sure which group to send this to> I have a windows form with a text box that I want to send the data entry to SQL using a stored procedure. I add the parameter: Dim prm as sqlclient.sqlparameter=sqlcm.Parameters.add("@WaterTemp",Sqldbtype.decimal,9 ) get the value from the text box: prm.value=me.textbox.text I execute the stored Procedure: Sqlcm.ExecuteNonQuery() I get an error 'Input string was not in right format' and that is because I do not put a value in the textbox because no data is available. The SQL table column is set to allow nulls. I think I need to use DBNull but I don't know how. The ' help' is not very helpful! Can anyone please help me? thanks Tag: Finding controls on a form in another application Tag: 74519
  - 23
    - Wrestling with MDI problem Hey all, I've inherited a mess of a program that is too far along to be rewritten. It uses MDI style forms. There is a main, parent form that contains a menu. Other child forms display within this. Each successive child form cascades down and to the right of the previous child form, ie. normal windows behavior. However, if I close all child forms and then open a new one. It does not open at the top-left of my parent form, but where the previous child form left off. Question is: how can I get this to reset? If a user closes all child forms, I want them to start at the top-left of the parent. Thank you! _______________________________________________________________________________ Posted Via Uncensored-News.Com - Accounts Starting At $6.95 - http://www.uncensored-news.com <><><><><><><> The Worlds Uncensored News Source <><><><><><><><> Tag: Finding controls on a form in another application Tag: 74517
  - 24
    - Crystal Report 10 and crystal report viewer control I am using VB. NET 2002 and framework 1.0 to build an application. I am using crystal report as my reporting tool. Reports build with crystal report 8.5 and 9.0 are well supported by the crystal report viewer control. I was curious to know if any reports build in Crystal reports 10 will be supported by the crystal report viewer control in VB .Net 2002. Will it cause the report to fail or it will display the report build in version 10 without any problems? Thanks in advance. *** Sent via Devdex http://www.devdex.com *** Don't just participate in USENET...get rewarded for it! Tag: Finding controls on a form in another application Tag: 74516
  - 25
    - XP Themes and IE I am writing a control that gets downloaded and run in Internet Explorer and I would like the visual style of the controls to match the visual style of the operating system. I know about .manifest and about EnableVisualStyle() but these seem to only work with full blown executables (.exe). I found a few promising threads in Google but the links in that thread no longer work. Does anyone know how to enable visual styles in this scenario, or if not where the link http://www.gotdotnet.com/team/windowsforms/Themes.aspx has been moved to? Thanks Wells Caughey Tag: Finding controls on a form in another application Tag: 74515
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  - 1
    - Icon inside form menu ???? Dear all, What is the way to add icon in front of menu items in a form menus? thnask for your info regards serge *** Sent via Devdex http://www.devdex.com *** Don't just participate in USENET...get rewarded for it! Tag: Finding controls on a form in another application Tag: 74511
  - 2
    - How to get the WM_MDICREATE message (when an MDIChild form is created) Hi all, I can get to the messages of the MDIClient area now, but I don't seem to get the WM_MDICREATE message, although I do get the WM_MDIDESTROY message. My code in question: Public Class SubclassMDI Inherits NativeWindow Public Event LoadButton(ByVal hWnd As Integer) Public Event RemoveButton(ByVal hWnd As Integer) Private Const WM_MDICREATE = &H220 Private Const WM_MDIDESTROY = &H221 Protected Overloads Overrides Sub WndProc(ByRef m As Message) 'Process the needed messages Select Case m.Msg Case WM_MDICREATE 'Forward message to base WndProc MyBase.WndProc(m) Application.DoEvents() RaiseEvent LoadButton(m.HWnd.ToInt32) Case WM_MDIDESTROY RaiseEvent RemoveButton(m.WParam.ToInt32) 'Forward message to base WndProc MyBase.WndProc(m) Case Else 'Forward message to base WndProc MyBase.WndProc(m) Debug.WriteLine(m.ToString()) End Select End Sub End Class Am I doing anything wrong here? I don't even see the message in the Debug window. Does anyone have an alternativ for me? BTW: The instance of SubclassMDI gets the handle of the MDIClient area by an AssignHandle call. -- Hope this helps ... Rene Mansveld Spider IT - Germany (was Whitworth Software Solutions) www.Spider-IT.de / www.Spider-IT.net / www.Spider-IT.org / www.Spider-IT.biz Please reply to the newsgroup(s) :o) Tag: Finding controls on a form in another application Tag: 74507
  - 3
    - Capturing tab control I have been looking with no avail at various solutions in the groups to the problem of capturing the tab keydown while in a certain controls. I have been trying to capture the tab keydown event but nothing appears to be happening and it is totally ignored. I really cannot understand why this is happening - apparently there is something that must be overridden but im not sure on how this works. the field in questionis yyn_Weightloss and the code im using is Private Sub yyn_WeightLoss_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles yyn_WeightLoss.KeyDown If e.KeyCode = 9 Then MessageBox.Show("tab caught") fun_TabMoveNext() Else : Exit Sub End If End Sub I really do not understand why this is happening as other events are firing correctly such as lostfocus. Can anyone be of assistance on this issue. Thanks in advance Tag: Finding controls on a form in another application Tag: 74506
  - 4
    - Disabled but visible Scrollbars in ScrollableControl Hello Everyone, I have a class that is derived from ScrollableControl and does custom painting. My problem is that when ever the DisplayRectangle's Size exceedes the AutoScrollMinSize the scrollbars actually disappear which messes up my custom layout logic. What I want is to keep the vertical scroll bar visible regardless of the DisplayRectangle's relationship to the AutoScrollMinSize. Specifically I want the vertical scrollbar to remain visible but appear disabled when the DisplayRectangle exceedes the AutoScrollMinSize. As an additional constraint, the application that hosts this control is not given Full Privildeges so I can not use any form of interop. Thanks, Wells Tag: Finding controls on a form in another application Tag: 74501
  - 5
    - Setting focus to a form based on a form handle ( C# ) Hi! I maintain a collection of all form handles that I span out. The forms can be MDI Parents or Children - my app opens up several forms of different type. Once in a while, when a user performs an action that opens up a new form, I want to check first if the form is already opened and if so, just set the focus to that form. Is there an API call that can do that ? I can not find anything in managed code. May be I am not looking right ? Please let me know if you've done similar things. Many Thanks, --Mike Tag: Finding controls on a form in another application Tag: 74497
  - 6
    - ComboBox - Databinding and Sorting - Days wasted! Customers table - contains Columns: CustID, Surname, Forename, TtlID Titles table - contains Columns: TtlID, Title TtlID is a Foreign Key in the Customers table. I have a Form frmCustomers which contains a ComboBox to select the Customer's Title. The ComboBox is populated from the database table Titles. However, I want the titles in the combobox to be displayed in alphabetical order so that when a title is selected and the Customer is updated, the TtlID field correctly corresponds with that in the Titles table. I've tried using a dataview and sorting it as the datasource for the combobox, but once the data value are assigned to the combobox, the TtlID field gets out of sync with the database table. How can I solve this? - I've been trying for days!!! Thank You in Advance for any help. Tag: Finding controls on a form in another application Tag: 74489
  - 7
    - Rectangle curved edges Do anyone know an easy way to draw rectangles with curved edges? I couldn't see anything in Graphics that would provide that. Thanks in advance. -- John Wood EMail: first name, dot, second name at priorganize.com Tag: Finding controls on a form in another application Tag: 74478
  - 8
    - VS.NET 2005 and 2003 I have installed the VS.NET 2005 Beta 1 and now VS.NET 2003 projects in VS.NET 2003 do not compile. Is the Beta supposed to run side by side with the older version? Or is it supposed to make older versions stop working any more? Tag: Finding controls on a form in another application Tag: 74477
  - 9
    - Application Instance How to determine if another instance of the application is running so that ir doesn't run multiple instances? Thanks Tag: Finding controls on a form in another application Tag: 74475
  - 10
    - WebClient Class and Cookies I have a Winforms App which uses the WebClient class and works very well. I am wondering if I can look at cookies returned from the server as a result of a WebClient class request. It appears that there is a WebClient attribute called credentials which can be used to set and get credentials for authentication. Is this the correct interface to look at cookies returned by the server for encryption? Please advise. Thanks very much for your help. Best Regards, Paul J. Lay Tag: Finding controls on a form in another application Tag: 74463
  - 11
    - mulitple data Datagrid Hi 2/3 Databound into the single datagrid , means i have one select resultt, one array list and one comboselection result All these i have to bind into proper places in grid columns. can anybody help me. thanks usha Tag: Finding controls on a form in another application Tag: 74459
  - 12
    - Retreiving the DataRow from a Sorted DataGrid I've been using dataTable.Rows[ dataGrid.CurrentRowIndex ] to retreive the DataRow for the currently selected row in the datagrid. This works fine until I click on a column header to sort the DataGrid; then the indices of the rows in the DataGrid no longer match the underlying DataTable. How do I find the correct DataRow in the DataTable from the sorted DataGrid? Thanks in advance. Phil. Tag: Finding controls on a form in another application Tag: 74456
  - 13
    - Using Design Time DataSets from another component? Is there any way I can use a DataSet(Strongly typed or normal) from another Component class - using the design time editor? Ex: Component1 has 1 DataSet called orderDataSet it is a design time control so i can bind other controls to it in the same class using the design time editor. Component2 has controls that I want to bind to Component1's orderDataSet - how do I do that - using the design time editor? Thx Tag: Finding controls on a form in another application Tag: 74455
  - 14
    - Cannot display unicode characters in HelpProvider HelpStrings Well, the title describes the problem. I add a HelpProvider to my simple windows forms app, say helpProvider1. Then i assign a cyrillic string to the "HelpString on helpProvider1" property of a TextBox and when i test it, i see "ÿãǖëǜ" or something like that. Any help is appreciated. Tag: Finding controls on a form in another application Tag: 74454
  - 15
    - Windows.Forms Issue (compact framework) I have a form (form1) that I call another form (form2) from, using .ShowDialog (modul). I disable form1 (.Enabled = False), once the user is finished with form2 (checked a few check boxes, and clicked a button) the Disposing event of Form2 is fired (on form1) and I re-enable(.Enabled = True) Form1. This all work fine. However! Form1 is minimized in the Taskbar, and will only show if I click on it. Anybody anay ideas? Tried These..... .ShowDialog() .Show() .Focus .BringToFront .SetWindowState -- Regards Brett Miller Tag: Finding controls on a form in another application Tag: 74453
  - 16
    - MCE Hi, I have written a dll to control MCE thru my c# code.Inside that dll, the class inherits IaddInModule, IaddinEntryPoint... interfaces with Initialize,launch methods. I created Strong name for this dll and i used gacutil.exe to store in global assembly. Moreover I created a xml file with application,entrypoint,category elements.... and I used RegisterMCEApplication.exe to register the xml file (the Entrypoint element is having my class name and my assembly name..). Everything fine.. I didnot get any error message. My application name is coming under MCE..Setting..Genteral..MoreProgrames..External Programes. But my Dll is not working.... that is MCE is not calling initialize,launch method from my dll (It has to call my methods as described in MCE SDK, i feel ). what mistake i commited.... i donot know exactly.... please help me.... to come out... from the problem.... thanks and regards Rajamanickam Tag: Finding controls on a form in another application Tag: 74450
  - 17
    - How can open other form Hello, How can click one button,open other form.Please teach me the source. Thank you Tag: Finding controls on a form in another application Tag: 74449
  - 18
    - Context Menu - Error This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C46471.A488B040 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable All, When I add a context menu to my form and try to edit the menu, I = get an error: Object reference not set to an instance of an object. How = can I resolve this? Thanks, BRIAN HAMMER ------=_NextPart_000_0008_01C46471.A488B040 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2800.1400" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>All, When I add a context menu to my = form and try=20 to edit the menu, I get an error: Object reference not set to an = instance of an=20 object.  How can I resolve this?</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>Thanks,</FONT></DIV> <DIV><FONT face=3DArial size=3D2><BR>BRIAN = HAMMER</FONT></DIV></BODY></HTML> ------=_NextPart_000_0008_01C46471.A488B040-- Tag: Finding controls on a form in another application Tag: 74445
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    - Problem serializing property on custom UserControl I have a series of simple controls that I created to make some aspects of Tablet PC programming a little easier. The "Tablet PC" aspects of the controls are irrelevant to the problem I'm having, but I feel compelled to mention it because it can be hard for someone to imagine my challenge when I talk in hypotheticals. Anyway, these controls each have an Ink property. For non-Tablet developers, Ink is a class defined in the Tablet PC SDK (1.0+). I've created a custom UI Editor for my Ink property and it works well at design time, but as soon as I run the program the changes are gone. I can't seem to figure out how to make the IDE (Visual Studio EA 2003) recognize the change to the property and serialize the data. I'm attaching my project code to this post because I can't really slim it down and still have it do what I'm trying to do. Those of you who might be able to help should be able to get past the extra nonsense pretty easily. This is my first UI Editor so I'm sure the solution is pretty simple. Here's how I created the editor: 1. First, I have the control (scratchLabel). If that doesn't go without saying, please stop reading now - you can't help me. ;-) 2. I have a class called InkEditor which inherits from System.Drawing.Design.UITypeEditor. 3. In the InkEditor class I have overidden the EditValue method to display a form which captures the ink. This form works on non-Tablet PC machines as well. Here is the code for that method: public override object EditValue(System.ComponentModel.ITypeDescriptorContext context, IServiceProvider provider, object value) { InkEditorDialog inkedit = new InkEditorDialog(); if (value != null) { inkedit.Ink = (Ink)value; } else { inkedit.Ink = new Ink(); } IWindowsFormsEditorService winFormEditorService = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService)); if (DialogResult.OK == winFormEditorService.ShowDialog(inkedit)) { value = inkedit.Ink; } return value; } 4. In the scratchLabel class (my control), I've put the following attribute on my Ink property. [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible),System.ComponentModel.Editor (typeof(InkEditor),typeof(System.Drawing.Design.UITypeEditor))] 5. I probably should have mentioned it earlier, but my scratchLabel class is tagged with the [Serializable()] attribute and implements the ISerializable interface. 6. The following serialization code is included, but it doesn't seem to ever get called. public scratchLabel (SerializationInfo info, StreamingContext context) { InitializeComponent(); try { //deserialize class this.Ink = (Ink)info.GetValue ("Ink",typeof(Microsoft.Ink.Ink)); } catch (Exception ex) { throw ex; } } //serializes class void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context) { info.AddValue ("Ink",this.Ink); } So the million dollar question is, what am I missing? There must be something really simple that I need to include to let the IDE know to save the data. Thanks for your help. Rhy Mednick P.S. The source code for the group of controls in development, for those interested, is at http://chickenscratch.sourceforge.net and http://inkmenu.sourceforge.net. Tag: Finding controls on a form in another application Tag: 74440
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    - Control changed Detection Hi, I have a form with different type of controls (textbox, drop downs, grids and others). Is there a common way to detect when one of those controls has been changed? (Other than register each one of them separately for value changed or row added event) Thanks, Ori. Tag: Finding controls on a form in another application Tag: 74436
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    - Load Event firing in User Controls I am seeing this behavior and do not know if it is normal: When I hav a user control nested in another user control, the load event of the nested control is firing 3 times. The unnested control is firing twice. Both controls fire the load event twice when not nested. Even stranger, both controls are firing the load event when the form is closing! Thanks for any help. Glenn Tag: Finding controls on a form in another application Tag: 74435
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    - Host usercontrols in ie Hi NG, I have a usercontrol that I host in IE in a html-Page. I placed it via the object-Tag. <object id="TestCtrl1" height="100" width="500" classid="TestCtrl.dll#TestCtrl.TestCtrl"> </object> That works great. But now my UserControl needs an activex control. So I added it to the usercontrol and the Interop-Wrapper-dlls are created. How can I tell the OBJECT-Tag that the UserControl needs this Interop-dlls? Thanx Matthias Tag: Finding controls on a form in another application Tag: 74432
  - 23
    - How to get the MDIForm client area handle Hi all, I'm desperately trying to figure out how to retrieve the handle of the MDIForm's client area. I need this for the .NET version of our free MDI TaskBar control. The control needs to get to the MDIForm's client area handle in order to receive windows messages on the creation and destruction of MDIChild forms. I wrote a subclassing class according to MS's knowledge base article #311317, and I want to use code like the following: Private MDI As SubclassMDI = New SubclassMDI() Protected Overrides Sub OnHandleCreated(ByVal e As System.EventArgs) MyBase.OnHandleCreated(e) MDI.AssignHandle(Me.Parent.Handle) ' <-- here I need something like "Me.Parent.ClientArea.Handle" End Sub Protected Overrides Sub OnHandleDestroyed(ByVal e As System.EventArgs) MDI.ReleaseHandle() End Sub -- Any help gladly appreciated ... Rene Mansveld Spider IT - Germany (was Whitworth Software Solutions) www.Spider-IT.de / www.Spider-IT.net / www.Spider-IT.org / www.Spider-IT.biz Please reply to the newsgroup(s) :o) Tag: Finding controls on a form in another application Tag: 74421
  - 24
    - ActiveX Component works on XP and not on 98 Hi There, I have created an ActiveX component with visual basic. The ActiveX component is on a .net windows form. This is the code used to open the form it is on: (frmTest is the windows form class) _test = new frmTest(); try { _test.IsNew = true; } catch (Exception e) { MessageBox.Show(e.ToString()); } When this is run a MessageBox is shown 'Cannot invoke property set of 'IsNew' at this time.' The IsNew property of the frmTest form does the following: public bool IsNew { set { myAX.IsNew = value; } } This works on XP but not on 98... Just a little background... The used to instantiate the form (at the top) is done in a new thread. Any ideas? Josh Tag: Finding controls on a form in another application Tag: 74420
  - 25
    - Exception is lost when Finally used in Try statement I'm having problems displaying the full error information for an error if the error is passed through a function that uses the finally statement as part of the error handling. The function where it loses the innerexception error objects is as follows: Private Sub DoSomething() Try conn = New OleDbConnection(GetDatabaseConnectionString) conn.Open() ... ... some database code which fails ... Catch ex as Exception Throw ex Finally conn.close End Try End Sub In this example, i want to use the finally statement to make sure the database connection is closed. When an error is received in the code above, the catch statement is processed and at that point, all the error objects are visible through the innerexception. However, when the error is raised to the function calling this (and the catch statement), the ex object is not set and i get the error message: "Object reference not set to an instance of an object.". When i remove the Finally section, the parent code correctly has the details of all internal errors. Does anyone know how to resolve this? I have tried declaring a new exception object at the top of the function to make sure it would stil be in scope in the finally clause, but this didnt work either. Thanks Malcolm Tag: Finding controls on a form in another application Tag: 74418

Hello All,

In .NET, how can I find out the controls on a form for an application that is running on my computer? The app is either a vb or c application.

Thanks,
Vince

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Re: Finding controls on a form in another application by hirf-spam-me-here

hirf-spam-me-here
Mon Jul 12 05:50:40 CDT 2004

* "=?Utf-8?B?VmluY2UgVmFyYWxsbw==?=" <VinceVarallo@discussions.microsoft.com> scripsit:
> In .NET, how can I find out the controls on a form for an application that is running on my computer? The app is either a vb or c application.

P/invoke on 'FindWindow', 'FindWindowEx', 'EnumWindows',
'EnumChildWindows'.

--
Herfried K. Wagner [MVP]
<URL:http://dotnet.mvps.org/>

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