.NET Form and Message Loop

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- Previous
  - 1
    - 3-tiers of vb.net Dear all, i have a question about 3-tiers of vb.net, the presentation tiers is form the database tiers is databas and how about the business tier if i write some dot net component , is it a business tie or if i write some com+ is it a business tie or web service is ?? Tag: .NET Form and Message Loop Tag: 72634
  - 2
    - Problem debugging ActiveX component in Windows Form I've added an ActiveX component to a Windows Form and this seems to be working fine. However, I now need to debug the ActiveX component, but can't step into the component - I can step in the Windows Form code, but can't go into any of the code referenced by the ActiveX component, even though this has all been built with a debug solution configuration. Does anyone know how I can get debugging to work in the ActiveX component ? Thanks for any help, Steve Tag: .NET Form and Message Loop Tag: 72630
  - 3
    - MDI Mouse Move & KeyPress Events Hi guys, This might be an already answered question, but I was wondering if there is a way to catch the Mouse Move and the KeyPress events if a have a MDI window because it doesn't fire these events (for instance, if I don't have any child form... just the main container). On the other hand, if there is a way to know if an application gets out of an idle state. I know how to control the Application.Idle method and attach it with a handler to method that should be triggered before having an idle state, but I don't see how to manage it if the application is receiving interaction from the user again and I want to reset a timer (for example). Any help or ideas would be appreciated. Thanks, Gustavo Ortega Software Engineer University of CR Tag: .NET Form and Message Loop Tag: 72627
  - 4
    - ListView taking a long time to select. I have a ListView that I am showing in 'Detail' mode. The list contains about 740 items and I have a button that tries to go through all items in the list and select them and change the image icon. This seems to take over a minute or two just to do something like foreach(ListViewItem item in listView.Items item.Selected = true item.ImageIndex = 1 Does anyone have any suggestions on how to speed this up? I would hate to guess how long it would take if I had 7000 items in the list. What is taking so long? I have tried to suspend the layout as is done during the Windows initialization but this did not seem to have any effect Thank you for your suggestions Kevin Tag: .NET Form and Message Loop Tag: 72625
  - 5
    - How to host a .NET MDI Child Window inside a VB6 MDI Application Hi folks, a bit of a tricky problem to solve for you. I have a scenario where I have a legacy VB6 MDI application that I want to act as a host for a MDI child form that resides in a .NET assembly. I can do the simple stuff such as exposing the .NET Form as a COM object and registering the assembly for COM Interop, the issue is how can I force the .NET Form to become a MDI child of the parent VB6 MDI Parent Window. Any suggestions would be most welcome Tag: .NET Form and Message Loop Tag: 72623
  - 6
    - Focus question I have a form with many controls and I want the focus to stay on a particular textbox no matter what the user does. I don't want to have to code an event for absolutely everything the user can do. I tried the leave event, but the problem with that is if the next event puts text in the textbox then the cursor is at the beginning of the text not the end. I know ways to accomplish this, however I just trying to see if there is a better way. Maybe there is an event that is executed after everything else. Thanks in advance, Will Tag: .NET Form and Message Loop Tag: 72620
  - 7
    - Update Problem with Combobox DataGrid I have downloaded DataBound combo box sampl I have got combobox data grid sample from http://www.syncfusion.com/FAQ/WinForms/FAQ_c44c.asp#q480q I added code to update changed records but it does not work.Have some one idea how add update ,new and delete functionality to data grid with combobox coloum.Data grid displays data from two tables,related by foreign key relation.that is typical case often encountered in database applications I have downloaded DataBound combo box sample.My code is based on this sample.Btw can yo tell me about the same problem with other samples.however my primary concern is about databound combo box sampl Tag: .NET Form and Message Loop Tag: 72615
  - 8
    - linking to an external file from a application i am using webbrowser control and i want it to display a file when a form loads the file is included in the project but how do i link it AxWebBrowser1.Navigate(" ??? " p.s. - i am a beginner also can i open this newsgroups in outlook express ? Tag: .NET Form and Message Loop Tag: 72610
  - 9
    - .Net Windows Application Assembly Downloading Question I have a question on the .Net Windows Application Assembly Downloading Problem I have a windows application with some dlls dependencies. And I have put it into a Web Site with a link to let user to click on the link for the application downloading from the web server automatically. All the exe & dlls are strong name signed already I found that sometimes, some computer cant download some dependencies, which causing the application cant run Do anyone know the reason on that Thanks for the help~~ Tag: .NET Form and Message Loop Tag: 72606
  - 10
    - Image within Splitter - Bubbling Click Event I've got a WinForms question, that hopefully isn't too twisty! I'm working with a [Splitter] object, and what I'm wanting to do is maintina good control over it's visual appearance. I'm settings it's BackgroundImage, but what I also want to do is insert an Image within it (which is a visual representation of something to grab - like the grabber image at the bottom-right of a form). For scaling and positional reasons I can't have the grabber icon as part of the actual BG image. Here's the problem: I can insert the image into the [Splitter], and position it just fine. But when the user clicks on it, the [Splitter] won't move, because it is the image recieving the click action, not the containing [Splitter]. Is there some way I can bubble the click event up to the containing [Splitter], so that it thinks it has been clicked, rather that it's child Image control? Thanks everyone. === Phil (Auckland | Aotearoa) Tag: .NET Form and Message Loop Tag: 72601
  - 11
    - Help with FlatStyle.System and font Hi, I've tried to search the answer but can't find it so far: Can someone shed some light on how the font was used when button's flat style is FlatStyle.System?? I've tried all sorts of ways, but the button's font always got changed when its container's font was set. Is there a way to set it back to Windows' default? Thanks!! Alan Tag: .NET Form and Message Loop Tag: 72600
  - 12
    - OnResize Before Constructor Makes Babies Cry I noticed that my application was throwing an exception in OnResize because an overridden version of OnResize in a class derived from Panel is called before the instance's constructor completes. In fact, OnResize is called before the constructor even starts (!). Sure enough, the MSDN documentation for .NET 1.1 says that this can happen. This means that every class that overrides OnResize has to manually make sure that the instance information used in OnResize is initialized before OnResize uses it. This is quite ridiculous and seems like a bug in the Framework -- imagine if every instance method had to check if its constructor had completed. Why does OnResize behave this way? Are there any other methods that behave like this? Is this going to be fixed? Andrew Tag: .NET Form and Message Loop Tag: 72599
  - 13
    - Tab order problem Hi all; I m facing problem in setting tab order . I have to group boxes GB1 and GB2. GB1 has two text boxes T1 and T3. GB2 has two text boxes T2 and T4. I want that tab movement should be T1, T2, T3 and T4 repectively... how can i do that.. Even though I have set the tab index in that order but not getting proper result.... Any suggestion? Thanks in advance.. Ansari Tag: .NET Form and Message Loop Tag: 72593
  - 14
    - EventsTab issue with PropertyGrid at runtime I program a simple forms editor like the VS.NET one and got the most of the stuff working. One problem is still unsolved and I need a bit help. The components I want to edit request the EventsTab for the PropertyGrid: [PropertyTab(typeof(System.Windows.Forms.Design.EventsTab), PropertyTabScope.Component)] public class MyControl : UserControl { /// } In the main form I add the type and assign the Site of the current component: this.propertyGrid.PropertyTabs.AddTabType(typeof(System.Windows.Forms.Design.EventsTab)); this.propertyGrid.Site = component.Site; I have also implemented IEventBindingService to handle the code generation: serviceContainer.AddService(typeof(IEventBindingService), new EventBindingService(this)); If I start my form the PropertyGrid shows the EventsTab with the lightning bolt and the BindingService works as expected. If I add another control with the same PropertyTab Attribute on it, the EventsTab disappear and whatever I do it will never come back. The type of control doesn't matter, the first shows the tab and the second removes it. Alongside with the EventsTab appears the standard properties Tab, to let the user switch back to properties view. This automagically added Tab does not disappear and become selected and the standard properties are shown, after the EventsTab button disappers - very strange behavior. Does anybody has a clue what happens here? Do I miss any other interfaces I should implement especially for events handling in my micro-IDE? What exactly do the Site property of the PropertyGrid? I've tried some other ISite implementations, but nothing worked. Do I need to change the property during runtime? Thank you for any idea or pointer to articles. -Joerg Tag: .NET Form and Message Loop Tag: 72590
  - 15
    - Windows Forms in web pages with Apache general question Hi! I am wandering if it is possible to host a C# winform in IE 6+ using Apache for the server In the lousy Professional Windows Forms by Wrox, there is a lousy chapter on doing so with IIS. Why can't it be done with Apache ? What does IIS do to support this functionality ? Any help is greatly appreciated Thank you in advance --Sam Tag: .NET Form and Message Loop Tag: 72587
  - 16
    - Capturing another window I've got an application (WinForms) with an MDI parent form and several MDI child forms, which all run maximized in the parent. This program needs to integrate in with another program that we have no control over. What I'd like to be able to do is capture another window (one from this other app) and have it appear as an MDI child window in the C# application I've written. First, is this even possible? Maybe not exactly this, but something that would at least achieve a similar appearance? Second, does anyone know how I can go about doing this? Thanks a lot. Ryan Gregg Tag: .NET Form and Message Loop Tag: 72580
  - 17
    - string length limit in args sent by ISynchronizeInvoke? I'm raising an event in a component, using ISynchronizeInvoke.Invoke, and my event args object contains a string as one of its members. If the string is longer than 63 bytes, the Invoke call pulls an unhandled exception in System.Windows.Forms.dll, to the effect that the string length must be less than 64. If I trim the string to 31 characters (62 bytes) everything's fine and the event goes as intended. But if the string length is 32 or greater, the unhandled exception gets thrown. Is there some kind of limit in the marshaling that's going on with Invoke? Or what? I've looked on groups.google.com but haven't yet stumbled on search terms that produce any discussion of this. Any ideas? Thanks, Tom Dacon Dacon Software Consulting Tag: .NET Form and Message Loop Tag: 72579
  - 18
    - Memory in windows forms Hi, Consider the following situation I have the following routine running repeatedly (curControl is a UserControl with say 1000 textboxes and a big array of strings): Public Sub AddControl(ByVal ctlName As String) If Not IsNothing(curControl) Then Me.Controls.Remove(curControl) End If Dim assemb As [Assembly] = [Assembly].Load("MyControlAssembly") curControl = CType(assemb.CreateInstance(ctlName), UserControl) curControl.Location = New Point(150, 20) Me.Controls.Add(curControl) End Sub Now, running this Sub over and over, the memory stays more or less the same. That is to say, it goes up a litte bit - maybe 4-20K, but nothing huge. Now, consider this version: Public Sub AddControl(ByVal ctlName As String) If Not IsNothing(curControl) Then curControl.Dispose() End If Dim assemb As [Assembly] = [Assembly].Load("MyControlAssembly") curControl = CType(assemb.CreateInstance(ctlName), UserControl) curControl.Location = New Point(150, 20) End Sub Now, in this version, the control is not being added to the form - it is just created. In this case, the memory goes up by about .5 MB every time this code runs. Now, the questions is, why is it that in the first scenario, the control is cleaned up properly - but in the second scenario (where Dispose is actually being closed), it is not. The memory keeps climbing up and up. Thanks Tag: .NET Form and Message Loop Tag: 72578
  - 19
    - "Frames" in windows forms Hi, Just wondering if there is any sort of concept of "frames", as in HTML in windows forms, where different forms can be loaded into different frames. So one of the frames might be loaded with different forms at different times. Or are user controls what one would use to accomplish this sort of thing. Thanks. Tag: .NET Form and Message Loop Tag: 72572
  - 20
    - How to create a form looks like the Outlook Form Hi ng, how can i create a form that looks like the DesktopNotification Form from (Office) Outlook 2003. The Form fades in when you receive a new email. I tried to build this form, but it doesn't work. Has someone an idea or an example? thx, Patrick Tag: .NET Form and Message Loop Tag: 72566
  - 21
    - System.NullReferenceException in unknown module during startup Hello, I am currently developing some control library for windows forms application in c#. But for some of the test application it throws up error box saying "System.NullReferenceException" in the unknown module as occured. Upon debugging I found that the error is thrown from the garbage collector thread. I could figure out the name of the dll and the method name which is throwing the exception. It occurs in mscorwks.dll!CallFinalizer() method. I do not have clue how this exception is getting generated. When the exception occurs the various constructors of the controls and their embeded constructor is getting called. It occurs before main form load event. The other observation is also that the exception started while we introduced resx file for the various resources in the control library. Any pointer? Thanks Kachra Tag: .NET Form and Message Loop Tag: 72553
  - 22
    - form dimensions I have just started trying out vb.net coming from vb6 which i know extremely well My problem is very strange, is it just me or is the top property returning werid values ie. -4. it should be in theory 0 relative to the internal client rect of course that could be the screen position but i can't actually find the equivilent properties from vb6 forms for the internal client rectangle ie. scalewidth etc It just seems like a completely different language, although it does seem more like c++ which i like my only grevience is that it's like learning from scratch again which is quite annoying when you spend all that time learning the details of the core vb stuff then they just change it all in a drop of a hat grr... Tag: .NET Form and Message Loop Tag: 72549
  - 23
    - Interpret empty datagrid cells as empty strings When I clear a cell in a datagrid, the corresponding (string) field in the underlying datatable becomes null. I would prefer that it be an empty string, as the corresponding database field is not nullable. Does anyone have any tips as to how to accomplish this? Thomas Berg Tag: .NET Form and Message Loop Tag: 72538
  - 24
    - Change a disable control color Hi Does anyone know how to set a color to a disable control (I.E. a textbox when you set the disable property to true you get the gray windows disable color, and I would like to set it in blue I already tried to override the event - OnEnableChange - but it doesn't wor Any tips or trick? Tag: .NET Form and Message Loop Tag: 72537
  - 25
    - "MDAC required" but it's installed... Hi, I'm having this error in a VB.NET-application at the moment that I attempt to read data from an SQL Server: The .Net Data SQL Provider (System.Data.SqlClient) requires Microsoft Data Access Components(MDAC) version 2.6 or later. at System.Data.SqlClient.ConnectionPool.GetConnection(Boolean& isInTransaction) at System.Data.SqlClient.SqlConnectionPoolManager.GetPooledConnection(SqlConnec tionString options, Boolean& isInTransaction) at System.Data.SqlClient.SqlConnection.Open() Failed to Load Call Data Call Data Failure However the MDAC 2.7 is installed! And when I look into the registry it is indicated as installed too: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DataAccess\FullInstallVer = "2.71.9040.2" The .NET Framework is installed (1.1), and it is on a Windows NT (Sp 6a) pc. Does anybody know about thisp roblem? And some solution? Could it be because of some restictions (although I do have full Admin rights on the pc). I'ts really urgent and bothering me (I have to do a demo in 20 minutes, hehe). Thanks a lot in advance, any help, hints etc will be really appreciated! Pieter Tag: .NET Form and Message Loop Tag: 72536
- Next
  - 1
    - Close & restart an application Hi, I would like close & restart the same application automatically. How can I achieve this. Please suggest Thanks & Regards CV Tag: .NET Form and Message Loop Tag: 72535
  - 2
    - Control.CreateControl does not create Handle According to the .NET doc, calling the CreateControl() will create a handle for the winform control and its child. But I doesn't seem to get it work. I have a code like this : private void button6_Click(object sender, System.EventArgs e) { m_Form2 = new Form2(); m_Form2.CreateControl(); // This should show me TRUE. But instead, it show me FALSE which is // the not expected. MessageBox.Show(m_Form2.IsHandleCreated.ToString()); } Is this a know issue or I miss out something ? Tag: .NET Form and Message Loop Tag: 72532
  - 3
    - DataSource property to control design time I want to add a DataSource property to my control that, at design time, will allow the designer to drop down a list of valid datasource components just like the DataGrid control. The type on the DataSource property is just 'object', so I know it isn't that. Is there a special designer attribute I have to use on my property Actually my Control has a Combobox and i just want to enable the combobox's (DataSource, DisplayMember, ValueMember) properties If I map the properties 1to1 like this [Category("Data"), DefaultValue(null), Description("The datasource that is used to populate the list with items.") public object DataSourc get{return this.comboBox.DataSource; set{this.comboBox.DataSource = value; [DefaultValue(""), Description("Gets or sets the column for display."), Category("Data") public string DisplayMembe get{return this.comboBox.DisplayMember; set{this.comboBox.DisplayMember = value; [DefaultValue(""), Description("Gets or sets the column for value."), Category("Data") public string ValueMembe get{return this.comboBox.ValueMember; set{this.comboBox.ValueMember = value; It breakes the Designers ability to show a dropdown list of avaiable DataSource's. Tag: .NET Form and Message Loop Tag: 72527
  - 4
    - How can I get the name of a ToolBarButton object. I need to iterate the Buttons collection in a toolbar and get the name of each button. The objects in the collection are not normal Button objects. They are ToolBarButton objects, which do not appear to have a Name property. Is there some other place to get the name? Tag: .NET Form and Message Loop Tag: 72524
  - 5
    - Visual inheritance bug? Hello gurus! In my C# project I have a localized form that I use as the prototype for two others. The prototype form has a ListBox control data bound to an ArrayList containing data elements of a custom class type. At design time its Items collection is empty and is populated by data binding only when the application is executed and the underlying ArrayList collection is created. The inherited forms' ListBox controls seem to somehow mysteriously inherit not only the properties of the prototype form's ListBox control, but also its Items collection. It sounds crazy, but I get errors at compile time which are caused by the code Windows Forms Designer automatically inserts into the InitializeComponent() method. This is what it looks like: this.lstItems.Items.AddRange(new object[] { ((object)(resources.GetObject("lstItems.Items"))), ((object)(resources.GetObject("lstItems.Items1"))), ((object)(resources.GetObject("lstItems.Items2"))), ((object)(resources.GetObject("lstItems.Items3")))}); This line is inserted automatically every time I save the inherited form. It seems that VS caches the number of elements in the Items collection the last time the application is run in debug mode and assumes the elements exist in the resource file, which they don't. Any ideas how to get rid of this annoying behaviour? P.S. If you reply directly, please remove the anti-spamming proclamation from my e-mail address. Tag: .NET Form and Message Loop Tag: 72520
  - 6
    - Memory issues Hi, I'm having several memory leaks in my Windows Form (C#). Testing, I found a curious thing: Put a ListView control in a Windows Form, run the project and start the TaskManager. Each time you focus the form or pass the mouse in/out the ListView, the memory used by the application increases. And, besides that, the start memory used is about 12MB. Isn't that a little big? Word uses about 8MB. Is this a Garbage Collector problem, or later this resources will be collected? Or, this is a internal problem of the ListView control? Thanks. Bruno Rodrigues. São Paulo SP, Brasil. Tag: .NET Form and Message Loop Tag: 72517
  - 7
    - Databinding - Best Practice (object-oriented) Hi, I would like to know your opinions about the best way of implementing databinding in an application. Let's take a simple example: we have a table called 'Employee' and we would like to display its content in a DataGrid. 1st solution: -Export all the Employee records from the database into a datatable. -Bind the datatable to a datagrid. -The user can insert/delete/edit records of the datatable through the datagrid and we can easily save the data back to the database. 2nd solution (object oriented). Here I consider than an employee is an object. -Create a class called 'Employee'. -Export all the Employee records from the database into a datatable. -Create an instance of the Employee class for each record of the datatable. -Store all the instances in a collection (eg. ArrayList). -Bind the collection to a datagrid The 1st solution works very well and is easy to implement but is not object-oriented. The 2nd one seems to be the logical way of doing it (creation of a 'Employee' class etc) but involves developing much more code. Besides it is not possible to add new employee through the DataGrid unless my collection implements the IBindingList interface which is not straightforward to do and also involves developing even more code. I would tend to use the 1st solution as it's easy to implement and it works fine but I can't help but think that it's not the right way of doing it. For example if every time an employee is created or modified in the DataGrid we want to do some checks (for example that the FirstName and the LastName are different) in the 2nd solution I would put this business logic in the 'Employee' class and I would be sure that whoever uses my 'Employee' class will use the correct business logic. If I use the 1st solution, I would have to use something like the ColumnChanged event of the datatable to check what the user has entered and therefore this business logic will be mixed with the code of the client application which will make the code more difficult to maintain. My example is quite simple but you get the idea. What's the best way of doing the above in your opinions? Thanks, Anthony. Tag: .NET Form and Message Loop Tag: 72516
  - 8
    - SEHException when closing a form I'm trying to enable Windows XP themes in my application. First I tried adding a call to Application.EnableVisualStyles(), but that didn't appear to actually do anything (aka I still wasn't getting styles). Yes, I have all my buttons and what not using FlatStyle = FlatStyle.System. I added a manifest file to the application directory, and this enabled the visual styles I was looking for. However, now when I call Close() on any form, I get an SEHException whos message is "External component has thrown an exception". The exception occurs in System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg). The internal error code of the SEHException is -2147467259. It appears to be related to the Application.EnableVisualStyles() call. If I keep the manifest file but remove the call, then I get visual styles and no exception. If I remove the manifest file but keep the call, I don't have visual styles and I get the exception. Any ideas? Thanks. Ryan Gregg Tag: .NET Form and Message Loop Tag: 72515
  - 9
    - WinForms and WebService Dear All, If I create a proxy object to a WebService in my Form as an instance object, does it create a process thread in my WebServer that is hosting the WebService?.... As the WebService object gets an error if I try to call a WebService method after around 30 minutes of inactivity...is re-creating the oprxy object the right solution... Please help... Many Regards Jack Tag: .NET Form and Message Loop Tag: 72510
  - 10
    - DataGrid The datagrid.click event only fires when the grid is clicked (ie the lines around each cell Is there a way to detect a click inside a cell in the datagrid TIA Tag: .NET Form and Message Loop Tag: 72509
  - 11
    - DataGrid I am pointing a DataGrid at a DataTable to display some data. Is there a way to a) hide columns that are displaye an b) update the row header with some tes TIA Tag: .NET Form and Message Loop Tag: 72508
  - 12
    - DataGrid : Different Alignments for Columns and Headers Is there a way to align the Column headers of a datagrid, differently from the columns itself For example, i want to Center align the Header,and right align the numbers.. How can I customize the painting of the column header, just like a DataGridColumnStyle ? -- .hibri Tag: .NET Form and Message Loop Tag: 72506
  - 13
    - Handling Exceptions in WinForms Dear All, In ASP.Net we had... Sub Page_Error(Source As Object, E As EventArgs) Dim message As String = "<font face=verdana color=red>" _ & "<h4>" & Request.Url.ToString() & "</h4>" _ & "<pre><font color='red'>" & Server.GetLastError().ToString() & "</pre>" _ & "</font>" Response.Write(message) End Sub where from Server.GetLastError we could get the error and display it neatly to the user...for all the errors that are unhandled in the Form...is there a similar funtion in WinForms...I tried to search one but did not get it... Please help... Thanks & Regards Jack Tag: .NET Form and Message Loop Tag: 72505
  - 14
    - Embedding the WOrd Windows in Win Forms or other Windows COntrol HI, I want to embed the Microsoft word window in my WIndows forms designed in C# ,net..... can anybody suggests, apart from using the Webbrowser control, what can be the other option avaialable to us. Thanks Vikash Tag: .NET Form and Message Loop Tag: 72503
  - 15
    - Threading This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C446AB.FE1D1FD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable All - I have the need to make my app multi threaded for those long = running tasks. Some of them are not a problem but the question I have is = with SQL and populating items on a form. If I create a new thread, = connect to my SQL, run a long query and then populate a combobox within = this new thread; I am guessing I should not do this. Somewhere I read = that items created on one thread should not be manipulated on another. How does one go about doing this? I have read through the help and = examples but didn't see anything that jumped out as an answer. Thanks, Brian P. Hammer ------=_NextPart_000_0008_01C446AB.FE1D1FD0 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>All - I have the need to make my app multi = threaded for=20 those long running tasks. Some of them are not a problem but the = question I have=20 is with SQL and populating items on a form. If I create a new thread, = connect to=20 my SQL, run a long query and then populate a combobox within this new = thread; I=20 am guessing I should not do this. Somewhere I read that items created on = one=20 thread should not be manipulated on another.</FONT></DIV> <DIV><FONT face=3DArial></FONT> </DIV> <DIV><FONT face=3DArial>How does one go about doing this?  I have = read=20 through the help and examples but didn't see anything that jumped out as = an=20 answer.</FONT></DIV> <DIV><FONT face=3DArial><BR>Thanks,<BR>Brian P. = Hammer</FONT></DIV></BODY></HTML> ------=_NextPart_000_0008_01C446AB.FE1D1FD0-- Tag: .NET Form and Message Loop Tag: 72499
  - 16
    - .NET can only get MainWindowTitle from a process...? Hi, I am developing my own taskbar like explorers. Therefore I need to be able to get a list of all open windows, and their associated icon (not necesarily the .exe file icon). Furthermore any information about how to retrieve systray icons would be great. I guess I cannot avoid using API, as the .NET framework only supports MainWindowTitle, and for instance explorer has many windows open within the same process? Anyone know if Whidbey supports this? (i've tried the prebeta but cannot find anything) Tag: .NET Form and Message Loop Tag: 72492
  - 17
    - Help needed: Animated controls in VS .NET Hi I am looking for an effective way to animate windows controls in the Visual Studio .NET programming environment. I want to attempt to have the effect of a control sliding onto the screen when a button has been pressed for example. I have tried to do this by repeatedly changing the form.Location property (within a thread) until the desired coordinates was reached but this behavior seems to slow and hogging the CPU. Any ideas on how I should approach this matter? Thanks in advance. Pierre van Rooyen Tag: .NET Form and Message Loop Tag: 72491
  - 18
    - combobox into toolbar Hi everybody, I'm pretty new to .NET framework so don't get hungry at my silly question Is there a way to put a combobox into a toolbar? I've been trying to do that for quite a long time with no success. If anyone has suggestions please let me know Thanks Tag: .NET Form and Message Loop Tag: 72487
  - 19
    - Load dynamic data into comboBox based on input in ComboBox What I would like to do is In a win form, I have a comboBox, when the form is loaded, I don't want to populate the comboBox(I have a lot of data). Instead, I want the user to type in the first few letters of the search criteria, then I capture it and run the search and return the result back and load the comboBox dropdown at that time Any suggestion on how to do that? Is there a already written control out there that I can purchase? Tag: .NET Form and Message Loop Tag: 72486
  - 20
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Hi,

I am using C# code to create a window, get its HWND and pass it to an
unmanaged C++ DLL. This DLL has the code to process messages. My problem is
that I don't receive the WM_QUIT event so, my application never quits. If I
replace the WNDPROC with mine using a call to SetWindowLongPtr, and just
check for messages before passing them to the original WNDPROC, I don't even
get a WM_DESTROY message.

Any idea why this is happening? Any idea how to fix this?

Eric Robert

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Re: .NET Form and Message Loop by Stoitcho

Stoitcho
Wed Jun 02 17:09:25 CDT 2004

Hi Eric,

WM_QUIT is not sent to any window ever. It just causes GetMessage to return
0, which ends the message loop.

As far as WM_DESTROY is concerned my tests show that windows procedures
receive that message. For testing I used Spy++.

--

Stoitcho Goutsev (100) [C# MVP]

"Eric Robert" <synapzzz@nospam.hotmail.com> wrote in message
news:OBtvbAMSEHA.2404@TK2MSFTNGP09.phx.gbl...
> Hi,
>
> I am using C# code to create a window, get its HWND and pass it to an
> unmanaged C++ DLL. This DLL has the code to process messages. My problem
is
> that I don't receive the WM_QUIT event so, my application never quits. If
I
> replace the WNDPROC with mine using a call to SetWindowLongPtr, and just
> check for messages before passing them to the original WNDPROC, I don't
even
> get a WM_DESTROY message.
>
> Any idea why this is happening? Any idea how to fix this?
>
> Eric Robert
>
>

Top