When can I use a MessageBox?

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- Previous
  - 1
    - Smooth progress bar I'm using the .Net ProgressBar, but can only manage the distinct style bar. I'm used to the MFC CProgressBar which allows you to set a "smooth" style. Is there a way to get the smooth style using .Net? I'm using Managed Code Extensions in C++. Joseph Tag: When can I use a MessageBox? Tag: 66524
  - 2
    - winform(smart client) inside browser Has anyone tried this before? When a user hits a site http:\\www.mysite.com\sclient.exe I would like the form to stay inside the browser rather than pop up as a separate window, similar to Java's applets. Tag: When can I use a MessageBox? Tag: 66521
  - 3
    - Make some DataGrid columns editable while others are not editable Is it possible to make some DataGrid's column editable, while some others not editable? Thanks. Tag: When can I use a MessageBox? Tag: 66519
  - 4
    - Scroll Lock Is there away to determine the Scroll Lock state? Thanks, Brandon Tag: When can I use a MessageBox? Tag: 66518
  - 5
    - image in a datagrid column header Hello, I would like to instead of placing text in to the header of a column in a windows.forms.datagrid to place an image instead. Can it be done? Googling doesn't seem to come up with anything like this except for creation of an image column style, which is close to what I want but not quite close enough (as I actually want the column to contain checkboxes). On another similar note is it possible to have multi-line column headers, where the header could wrap in accordance with the width of the column so you can always read what it says (more or less)? Anyone got any ideas. cheers H Tag: When can I use a MessageBox? Tag: 66517
  - 6
    - How do I raise a tab event I have a high-volume data entry form that is highly dependent on the 10-key. I am trapping the "+" key message pump at the form level and wish to translate it to function as a "tab" key. Does anyone know if/how this can be done? Tag: When can I use a MessageBox? Tag: 66516
  - 7
    - Re: Changing backcolor of a checkbox I am trying to change the back color of a checkbox. OnPaint method has a System.Windows.Forms.PaintEventArgs parameter. This is a general paint method for the whole control including its label, checkbox and background. The ClipRectangle property shows the boundaries of the whole control, if this is the first time the control is being painted, or just the area of the checkbox if it is being repainted. So in the OnPaint method do I need to do the following?: 1. First call MyBase.OnPaint, so that the checkbox is drawn as it normally would. 1. Figure out the exact location of the checkbox based on the ClipRectangle property. 2. Paint that location to the color I want. 3. Draw the check mark on that location if the checkbox is checked. Am I going in the right direction? It feels like there must be an easier way of doing this. Thanks for any help. Elif "Herfried K. Wagner [MVP]" <hirf-spam-me-here@gmx.at> wrote in message news:OEnokSB8DHA.2644@TK2MSFTNGP11.phx.gbl... > * "Elif" <efanuscu@mednet.ucla.edu> scripsit: > > How can I change the back color of a checkbox, not its label, but the actual > > checkbox? > > You will have to draw the control yourself (for example, by deriving a > class from 'CheckBox' and overriding its 'OnPaint' method. > > -- > Herfried K. Wagner [MVP] > <http://www.mvps.org/dotnet> Tag: When can I use a MessageBox? Tag: 66513
  - 8
    - Shutdown fails when app is running I'm having problems getting windows to close my app when the user shuts down or logs off. All I have in my project is a module and a form. The module contains the following code: Module modMain Sub Main() Dim frm As New Form1 frm.ShowDialog() End Sub End Module The form contains no controls or code (other than auto generated stuff). The start-up object is set to Sub Main. When I try to log off or shutdown, the app closes but there is no log off or shut down! Any ideas, - this is driving me mad! Regards Nick Tag: When can I use a MessageBox? Tag: 66510
  - 9
    - .NET framework bug in setting z-order When using the "BringToFront()", "SendToBack()", or "SetChildIndex()" methods on a group of child controls, the resultant z-order can be unpredictable when the "Visible" property of the child controls is set to false. Especially when the controls are part of a fairly large set (70 or more) However, when the "Visible" property of the controls is set to true, all 3 of the methods work predictably In my particular program, a panel control was created.... and then a group of ~60-70 label controls were added as children of the panel. As each was added, the "Visible" property was set to false. Then, after all were added, the z-order was re-arranged using calls to the the "SetChildIndex()" method. The resultant z-order was incorrect, and also was not predictable (not the same on subsequent runs of the program -- despite all else being the same) As a quick fix, I set the "Visible" property to true for each child control from the outset, and then used the "SetChilIndex()" method upon the children. Everything would then work fine This was a very nasty bug. Took a few days of analysis/debugging to find it. Hope this helps others who have the same problem Jim. Tag: When can I use a MessageBox? Tag: 66509
  - 10
    - I'm having Problems with '.AcceptsReturn' for a DataGridTextBoxColumn Hi I'm having a problems with a DataGrid where one of columns is a multi-line textbox field The problem is that it won't recognise a carriage return (i.e. new Line) The '.AcceptReturn' is set to true, even the 'keypress' event doesn't recognise that the 'Return' key has been pressed Here's the pseudo code for the datagrid style Dim Style As DataGridTableStyle = New DataGridTableStyl With Styl .MappingName = "NOTES .AlternatingBackColor = Color.WhiteSmok .PreferredRowHeight = 5 With .GridColumnStyle .Add(New DataGridTextBoxColumn With CType(.Item(0), DataGridTextBoxColumn .MappingName = "NOTES_TXT .HeaderText = "Notes .Width = 10 .ReadOnly = Fals .TextBox.Multiline = Tru .TextBox.AcceptsTab = True ' <-- This work .TextBox.AcceptsReturn = True ' <-- This Doesn't End Wit End Wit End Wit Is there a know problem with the '.AcceptsReturn' property for a DataGridTextBoxColumn VB.NET - Development Env 2003 (Version 7.1.3088 Net Framework 1.1 (Version 1.1.4322 Microsoft SQL Server 8.00.19 Many Thanks Andy Tag: When can I use a MessageBox? Tag: 66506
  - 11
    - Autoscaling forms according to system font size. .NET v1.1, C#. Hi, i have a form to which user controls are dynamically added (and removed). When i change the system font and re-boot the dynamically added controls do not re-scale. Yes, AutoScale is True for the dialogue and i can demonstrate the correct scaling behaviour if i add my controls to their parent container in the constructor. Is there a recognised way to get around this issue? At what point, and in what circumstances, are re-scaling calculations performed? Is there a way i can force those re-calculations? TIA, imp. Tag: When can I use a MessageBox? Tag: 66498
  - 12
    - DataGrid Sorting and CollectionBase I am creating a n tier application that passes a strong typed collections using CollectionBase. However, this collection does not sort in the Winforms Data Grid. I have set allow sorting from the designer and code, but it does not work. Any suggestions on how to get this to work Thanks Mark Tag: When can I use a MessageBox? Tag: 66496
  - 13
    - windows authentication I have a windows application where I use the web service to get the data from the SQL server. My question is if I use the windows authentication how can I extract the user name? Thanks. Tag: When can I use a MessageBox? Tag: 66492
  - 14
    - TreeView and Multiselect. I do not find properties Multiselect in the TreeView. Can I in some way select several items at once? Tag: When can I use a MessageBox? Tag: 66486
  - 15
    - Web Browser locks after SHowModal I have a modal dialog which has the web browser control in it. The first time it comes up fine. If I hide and then reshow, the form comes up, but the Web Browser is locked. Kent Tag: When can I use a MessageBox? Tag: 66485
  - 16
    - A DotNet Severe Limitation ? I believe I have found a severe limitation of DotNet, with respect to hosting Windows Form Controls in WebPages. It appears this is only possible when the web is configured on Port 80. Any other port and the control will not display. After a couple of days of searching the newsgroups/various forums I have found other postings requesting information on this anomaly yet nobody has found a solution. What are Microsoft doing with this ? It seems a common situation to run on alternate ports, being restricted to the default 80 seems ludicrous. Dave. Tag: When can I use a MessageBox? Tag: 66484
  - 17
    - Images in PropertyGrid I'm using a PropertyGrid and one of the properties I'm displaying is of type Image. The grid allows the user to pick an image from a file using a standard image browser. However, what it returns back to the property grid is in raw Image format, which does not include the filename - but I want to persist the selection as the filename that the user picked. Can this be done? Failing that, what's the best way to deserialize a raw Image ? Tag: When can I use a MessageBox? Tag: 66480
  - 18
    - DrawItem lost for MenuItem in MDI app Found a problem: a Form for MDI app contains MenuItems with OwnerDraw=true and added DrawItem and MeasureItem functions. The form contains a Child Form with a normal menu. If you open a few child forms and close them - the OwnerDrawn menu on the parent form disappears - just a blank rectangle. It only happens if a child form contains a menu added/merged to the parents menu. Anybody knows a workaround? It seems a bug in the framework. Eugene Tag: When can I use a MessageBox? Tag: 66479
  - 19
    - Get .NET control type Hi Is there any way by which I can get the ControlType like System.Windows.Forms.Button from an handle of the control. I want to list number of controls per control type (System.Windows.Forms.*) present in any .NET application from other application. And/Or I want to list all .NET controls and their names (Button1, Button2, etc) in any .NET application Any ideas Regards Neelesh Tag: When can I use a MessageBox? Tag: 66477
  - 20
    - Iterating through forms in an application I want to be able to reference an open form in my application. I thought this would be easy by iterating through all forms in the application but I can't figure out how to do this. I have tried using the Form.mdiChildren as recommended in another post but this did not return any results. This does not surprise me as all forms in the application are forms in their own right. Any help appreciated... Tag: When can I use a MessageBox? Tag: 66476
  - 21
    - DTS packages run from .Net fail I've asked this question before, but failed to get an answer that made sense to me.... I have some code that I stole from MSKB article 321525 that I'm using in a windows forms app (framework 1.1, VS 2003) that I'm having some problems with. Basically, if I try using it on a machine that only has the framework installed, then it fails intermittently. If I use the code on a machine that has had SQL installed onto it, then it works perfectly. Running a file monitor over the machine that works shows that it is actually using the dts files (e.g. dtspump.dll) installed under c:\program files\microsoft sql server instead of just using framework files. It generally works without referencing the dll files the first time after an install or update. Could someone confirm that I really shouldn't need the locally installed dts files - and, if I do, explain how it works after an install without looking at the dlls. and Has anyone else had the same kind of problem with 321525? Any solution? Tag: When can I use a MessageBox? Tag: 66470
  - 22
    - Generic GDI+ Error in Datagrid Hello on one client machine (Win 98, 128 MB RAM, 82% Resources free) there are red crosses inside the datagrids of my App. instead of data Sometimes the message "Generic GDI+ error" comes up. Everything else seems to work (i.e. normal textboxes) If one row in the datagrid is clicked, the data only in this field is shown Installation of .NET framework ran without errors What can i do, please Thank yo Dir Tag: When can I use a MessageBox? Tag: 66469
  - 23
    - IP address handling Hi there, Is there a control that I can use in C# which will help me work with IP addresses conveniently? And how can I add and subbtract IP addresses? Tag: When can I use a MessageBox? Tag: 66467
  - 24
    - Label not showing up on gui form called from within load handler of other form Hi: I'm trying to setup a simple message box that displays a message (like "Exiting Applicaton....). It's a simple form with only one label on it, displayed in the center. The label's text is set after initializecomponents is called from the form's constructor. I'm trying to use this in other forms. Right now, in the load handler for another form, I have a warning message. If the user chooses no, I'd like to have the display message show on the screen for a couple of seconds before exiting app. I create an instance of the message form from within the other form's load handler and call Show(). The form displays on the screen, but where the label should be, is only a white rectangular area, with no text at all. Is there some extra precautions needed when calling other forms from within your form application? Any advice and/or help is appreciated. Thanks Tag: When can I use a MessageBox? Tag: 66460
  - 25
    - An unhandled exception of type 'System.NullReferenceException' I'm getting the following error trying to run a program written in C# (or in VB) from Visual Studion.NET 2003. I'm just pressing the F5 (start) key to run the application. It's happening with both languages. "An unhandled exception of type 'System.NullReferenceException' occurred in system.windows.forms.dll Additional information: Object reference not set to an instance of an object. Thank you very much in advance. Tag: When can I use a MessageBox? Tag: 66457
- Next
  - 1
    - Security violation when trying to bring up help Hi, Thanks to the MVPs for all the help the last few days. You guys really saved me. The problem I am currently having is that I am doing the following (C#): Help.ShowHelp(this, "help.htm"); This brings up an HTML page that contains the very simple help information for the application. This help file gets installed in the same directory as the application. It works well on my development machine, but when I run it on a test machine (Windows98 with the .NET 1.1 framework) I get a security exception. It appears that the default security settings for the 1.1 framework do not allow this. So how can I bring up a single HTML help page without requiring my user to change the security permissions (not practical)? The error information is included below. Thanks! -Vance Gloster See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box. ************** Exception Text ************** System.Security.SecurityException: Request for the permission of type System.Security.Permissions.SecurityPermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 failed. at System.Security.CodeAccessSecurityEngine.CheckHelper(PermissionSet grantedSet, PermissionSet deniedSet, CodeAccessPermission demand, PermissionToken permToken) at System.Security.CodeAccessSecurityEngine.Check(PermissionToken permToken, CodeAccessPermission demand, StackCrawlMark& stackMark, Int32 checkFrames, Int32 unrestrictedOverride) at System.Security.CodeAccessSecurityEngine.Check(CodeAccessPermission cap, StackCrawlMark& stackMark) at System.Security.CodeAccessPermission.Demand() at System.Windows.Forms.Help.ShowHTMLFile(Control parent, String url, HelpNavigator command, Object param) at System.Windows.Forms.Help.ShowHelp(Control parent, String url, HelpNavigator command, Object param) at System.Windows.Forms.Help.ShowHelp(Control parent, String url) at NC_Desktop.MainWindow.buttonHelp_Click(Object sender, EventArgs e) at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) ************** Loaded Assemblies ************** mscorlib Assembly Version: 1.0.5000.0 Win32 Version: 1.1.4322.573 CodeBase: file:///c:/windows/microsoft.net/framework/v1.1.4322/mscorlib.dll ---------------------------------------- System Assembly Version: 1.0.5000.0 Win32 Version: 1.1.4322.573 CodeBase: file:///c:/windows/assembly/gac/system/1.0.5000.0__b77a5c561934e089/system.dll ---------------------------------------- System.Drawing Assembly Version: 1.0.5000.0 Win32 Version: 1.1.4322.573 CodeBase: file:///c:/windows/assembly/gac/system.drawing/1.0.5000.0__b03f5f7f11d50a3a/system.drawing.dll ---------------------------------------- XXXXXXXX Assembly Version: 5.0.1501.31677 Win32 Version: 5.0.1501.31677 CodeBase: file:///G:/INSTALL%20NC%20DESKTOP/TRY/XXXXXXXX.EXE ---------------------------------------- System.Windows.Forms Assembly Version: 1.0.5000.0 Win32 Version: 1.1.4322.573 CodeBase: file:///c:/windows/assembly/gac/system.windows.forms/1.0.5000.0__b77a5c561934e089/system.windows.forms.dll ---------------------------------------- ************** JIT Debugging ************** To enable just in time (JIT) debugging, the config file for this application or machine (machine.config) must have the jitDebugging value set in the system.windows.forms section. The application must also be compiled with debugging enabled. For example: <configuration> <system.windows.forms jitDebugging="true" /> </configuration> When JIT debugging is enabled, any unhandled exception will be sent to the JIT debugger registered on the machine rather than being handled by this dialog. Tag: When can I use a MessageBox? Tag: 66452
  - 2
    - disabled textbox I have a texbox which can be in one of three states in my application. 1. enabled, 2. disabled, 3. read only, with a different color background. When switching between these states, going from #3 to #1, I set the backcolor in my program to System.Drawing.SystemColors.Window which seems to be the default back color for windows forms controls. However, once I set the backcolor manually, when I disable the textbox its background doesn't change to gray the way it normally does. It just stays with the backcolor I assigned to it, which is white. Is there a way of assigning the default back color to a control, or undoing the backcolor assignment? Thanks for any help. Elif Tag: When can I use a MessageBox? Tag: 66448
  - 3
    - IIS ports Hi all, Does anybody have any experience of running .Net windows forms controls from a html page on any other IIS port than 80 ? If so can anyone tell me why i cant get even the simplest control to display correctly. When IIS is on port 80 then everything is fine. rgds Dave. Tag: When can I use a MessageBox? Tag: 66447
  - 4
    - Defining the start position for a dialog box Hi I am looking for a way to define the starting position for a common dialog box in C#, specifically for an instance of the class FolderBrowserDialog. I can't find a way to do this with managed code and I haven't had any luck with an unmanaged code solution either. I would appreciate help in implementing either one of these methods Thanks for your help Jeannie Tag: When can I use a MessageBox? Tag: 66445
  - 5
    - Problems drawing to a 1bpp (indexed) image. I've been tasked with writing a control for displaying previews from scan software we use. These are scans of plan drawings and are roughly 11000x8000, 1bpp CCITT compressed TIF graphics. I can used Image/Bitmap.FromFile to load them correctly, for display purposes I am creating a scaled render of the original image (so that paints don't have to perform scaling/sampling on every draw) which gets costly enough that we don't want to do it Problem; I modified the code this morning to use the PixelFormat of the source image in creating this scaled image, now I need to draw the original image to this new image. But Graphics.FromImage() throws an Exception for our TIF images because the target image is an indexed image, and .NET doesn't seem to support this I found one other post on the newsgroups related to this problem, and Microsoft's solution was to draw to a 24 or 32bpp image and then (for the original author's purposes) save to an indexed format (presumably GIF being that the post dealt with an 8bpp graphic) That would work great (or well enough) for the original author's problem, but let's do some math 11000*8000=88,000,000 elements/pixel Not knowing how the Image class was implemented for holding 1bpp graphics, I assume this requires 11,000,000 Bytes, ~10742.2 KB or ~10.4 M This we could easily accomodate (memory requirements would be low for this image) According to the post I originally found, the only obvious solution is to create a target graphic that is NOT indexed. Going back to the math this would require 88,000,000*4 Bytes = 352,000,000 B, ~343750 KB or ~ 335.7 M Obviously we can't do this. It's almost obvious we need a graphics object that can work with an indexed image My opening pointed out I am drawing to a scaled surface, so my target isn't really 335MB, it's around 30MB (roughly 8% of the physical 'pixel' size of the document). I must display these, but even this allocation is unsatisfactory, especially since my control will allow zooming in to the original document size of 100%, making the scaled image the same size as the source image Does anyone have any suggestions? Maybe there is a way to scale the image without creating the new image object and drawing it myself? On the same note, can Microsoft drop the $ into the developer time it would take to make a graphics object that could work with indexed/paletted surfaces? This seems like something a fair percentage of developers might need, and if available, would obviously use, so why wouldn't it be done already (except to save time, or meet some design goal/model I may not be aware of) Thanks in advance for any possible solutions, I'll poke around and look for some solutions and post what I find, we were really hoping to nix the sampling/scaling on every draw (panning code) since it was causing notable lag in the application (being that the original document has a massive resolution on it, even a 2ghz machine with 1gb of RAM takes effort) - Shau Tag: When can I use a MessageBox? Tag: 66443
  - 6
    - Strange Behavior with .showdialog() Greetings, Take the following example of a form and a form launched from within it. Dim frmCredit as new frmCredit frmCredit.showdialog() Now, in the frmCredit, you have an OK box which does the saving of data, cleanup, validation, etc.... On one of the validation checks (ensuring that all required fields are entered) you have the following: Private Sub cmdOK_click(ByVal sender as System.Object, ByVal e as System.EventArgs) Handles cmdOK.Click errorProvider(txtName,"") if txtName.text.length=0 then errorprovider.seterror(txtName, "Enter Name") exit sub end if ......... End Sub Problem: When this validation fails, when the exit sub is called, it closes the entire form, rather than exiting just the cmdOK_Click event. This then puts you back at the original form which would create, what I'd term as an unpleasant user experience. However, should you change the original call to: "frmCredit.Show()" when the data validation fails and the exit sub is called, it returns to the frmCredit as expected. What gives? Anybody work around this with the showdialog? I'd like to use this call, as it is imperative and the underlying form relies on the data that is input on the frmCredit. Michael Tag: When can I use a MessageBox? Tag: 66433
  - 7
    - Changing a Messagebox font Is there a way to change the messagebox font in a VB.NET/ C# Windows Application? I have been trying it using the API SystemParametersInfo without much luck. Any help would be greatly appreciated. Thank you Sam Tag: When can I use a MessageBox? Tag: 66432
  - 8
    - Exception on Form restore I am experiencing an odd issue when my form is minimized. Upon activation, my form refreshes some data within a DataGrid control. No exception is thrown until the form is minimized, then restored from the task bar. Upon restore, an exception is thrown in the Activated event. The exception is as follows: System.ArgumentException: '0' is not a valid value for 'value'. 'value' should be between 'minimum' and 'maximum'. at System.Windows.Forms.ScrollBar.set_Value(Int32 value) at System.Windows.Forms.DataGrid.SetDataGridTable(DataGridTableStyle newTable, Boolean forceColumnCreation) at System.Windows.Forms.DataGrid.TableStylesCollectionChanged(Object sender, CollectionChangeEventArgs ccea) at System.Windows.Forms.GridTableStylesCollection.OnCollectionChanged(Collectio nChangeEventArgs ccevent) at System.Windows.Forms.GridTableStylesCollection.Clear() at MyProject.frmMyForm.FormatGrid() at MyProject.frmMyForm.MyForm_Activated() The exception occurs on a line of code that simply clears all TableStyles from the DataGrid object (frmMyForm.MyDataGrid.TableStyles.Clear). Any ideas as to why this only occurs when the form is restored from being minimized? -- Scott Adams ~~ not the Dilbert guy ~~ ~~ not the creator of the Adventure series ~~ Tag: When can I use a MessageBox? Tag: 66431
  - 9
    - VS.NET 2003 Windows Toolbar: How to center text without image? I am trying to create a toolbar in a Winforms application that contains only the Text on the button without an image. It appears there is no way to tell the button to draw itself without an image and center the text. For example, all I want is a button with the letter 'R' on it in the center of a small button on the toolbar; however, the 'R' is in the lower half of the button and the button looks to be anticipating the addition of an image in the upper half. How can I implement a toolbar with only small buttons and the text in the center WITHOUT an image? Thanks Mark Tag: When can I use a MessageBox? Tag: 66421
  - 10
    - Simulate Form's ShowDialog with other control (threading?) I want to extend a ListBox by adding a ShowDialog method that will wait (block) the main thread until the user has selected an item in the ListBox (i.e. similar to Form.ShowDialog). I'm not clear about what threads are running behind the scenes in C# (GUI, etc.). How can I block the main thread while allowing the GUI thread and also (if needed) a separate thread to handle the ListBox events. Once the user has selected an item or has selected outside the ListBox, I would unblock the main thread and return the result I already have this working by putting a ListBox inside of a Form, but the dialog (of ShowDialog) takes focus away from the main application when shown (application title is out of focus since dialog has focus). If I can duplicate the blocking mechanism of the ShowDialog method, I will be able to keep all focus within the application. Note: I use Capture to handle mouse clicks outside of the ListBox. Tag: When can I use a MessageBox? Tag: 66415
  - 11
    - Changing backcolor of a checkbox How can I change the back color of a checkbox, not its label, but the actual checkbox? Thanks, Elif Tag: When can I use a MessageBox? Tag: 66413
  - 12
    - Controls Subclassing in .NET Does anyone has such expirience?Share it please: thanks Tag: When can I use a MessageBox? Tag: 66409
  - 13
    - Counting Connected Event Handlers I have a customer control that inherits from System.Windows.Forms.Control. Its not the worlds most complicated control but I have a problem. I'm trying to get a count of the number of events connected to base.click. Is this possible Thank Al Tag: When can I use a MessageBox? Tag: 66408
  - 14
    - MDI App Timeout I have an MDI app that I need to timeout after a certain amount of time, say 30 minutes. I am looking for a way to make sure that if the user selects a childform or types something in the childform or selects a menu item or even just clicks on something in the app it will not timeout. But if the user minimizes the app and does nothing with it for the preset time or just walks away from their PC for that longer than the preset time that the app will give them a warning that the application is closing. So far I have looked at trying to do mouse clicks and keyboard presses but I can't seem to figure out how to do it without having to write something in every childwindow. I have also looked at Application.Idle but it seems that if something else is going on on the machine like I am working with another application the Applicaiton never seems to go idle until all typeing and mouse clicks have stopped all together. Has anyone come up with a way to do something like this? The timer part is easy of course my biggest issue is how to catch all mouse clicks within the parent form as well as keystrokes but ignore everything outside the app. TIA -Stanley Tag: When can I use a MessageBox? Tag: 66402
  - 15
    - C# windows app Keyboard hook SetWindowsHook Hi I have to prevent user pressing Alt, Ctrl, Shift and Windows+M key combinations when the windows form created by the application is active. The main thread runs in background and the entire application is like a Wizard where user keeps on pressing Ok / Cancel and the next form is opened after closing the previous one I have to prevent user from pressing all special keys, user should not be able to minimise the app etc How do I do that I tried SetWindowHookEx(...) but that did not work Also in WinUser.h has #define WH_KEYBOARD 2 an #define WH_KEYBOARD_LL 1 The Hook can be created using WH_KEYBOARD but not WH_KEYBOARD_LL The hook created using WH_KEYBOARD does not work. Can some one help me in providing a small snippent of code Thanks in advance Tag: When can I use a MessageBox? Tag: 66400
  - 16
    - Localized form name Hello All I want a form name to be changed depending upon the cultureInfo. Whenever one creates a form, its corresponding Form1.resx file is created. I created a file named Form1.fr-FR.resx, and added the string resource for form name. The application compiles fine, but even if I change the Thread.CurrentThread.CulturInfo property to fr-FR, the string is not taken from the new file. Is anything I'm missing Thanx Mahesh. Tag: When can I use a MessageBox? Tag: 66398
  - 17
    - Localized form name Hello All I want a form name to be changed depending upon the cultureInfo. Whenever one creates a form, its corresponding Form1.resx file is created. I created a file named Form1.fr-FR.resx, and added the string resource for form name. The application compiles fine, but even if I change the Thread.CurrentThread.CulturInfo property to fr-FR, the string is not taken from the new file. Is anything I'm missing Thanx Mahesh. Tag: When can I use a MessageBox? Tag: 66397
  - 18
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I have certain conditions that I check during the Load event and would like
to display a MessageBox. I tried doing this in the Activated event, but
can't do it here.

Is there an event that I can use to display the error?

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Re: When can I use a MessageBox? by hirf-spam-me-here

hirf-spam-me-here
Wed Feb 11 15:31:40 CST 2004

* "Top Gun" <nfr@nospam.com> scripsit:
> I have certain conditions that I check during the Load event and would like
> to display a MessageBox. I tried doing this in the Activated event, but
> can't do it here.
>
> Is there an event that I can use to display the error?

The 'Load' event handler? What's the problem?

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

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Re: When can I use a MessageBox? by Top

Top
Wed Feb 11 16:29:05 CST 2004

Looks like the problem may be related to Microsoft's UIP Application Block.

"Herfried K. Wagner [MVP]" <hirf-spam-me-here@gmx.at> wrote in message
news:OeOduaO8DHA.3880@tk2msftngp13.phx.gbl...
> * "Top Gun" <nfr@nospam.com> scripsit:
> > I have certain conditions that I check during the Load event and would
like
> > to display a MessageBox. I tried doing this in the Activated event, but
> > can't do it here.
> >
> > Is there an event that I can use to display the error?
>
> The 'Load' event handler? What's the problem?
>
> --
> Herfried K. Wagner [MVP]
> <http://www.mvps.org/dotnet>

Top