disable close button of system menu

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  - 1
    - Any way to programmatically get a list of all language encodings? I want to provide a way for the user to select the appropriate language encoding - the way IE does it when you right-click a page and select Endcoding. Is there an API somewhere that provides this information? Btw, I'm using C#, but VBNET examps are always welcome. TIA Tag: disable close button of system menu Tag: 75823
  - 2
    - Catching exceptions thrown by an MDI Child Form separately Hi All, How can you capture unhandled exceptions thrown by an MDI child form separate from the entire app? I have an application-wide exception handler to catch crashes by doing the following in my Application entry point: Public Shared Sub Main() 'Explicitly set apartment state to Single Thread Apartment (STA) System.Threading.Thread.CurrentThread.ApartmentState = System.Threading.ApartmentState.STA Dim eh As New MyExceptionHandler() AddHandler Application.ThreadException, AddressOf eh.OnThreadException Application.Run(New Form1) End Sub The form that I'm using to handle this reports/logs the exception and closes down the application. This works perfectly. I now want to enhance this functionality by catching unhandled exceptions within individual MDI Child forms so that I can close down just the child form and not the entire app. I'm having trouble isolating the exceptions thrown by the child forms separately. Does anyone have any tips on how best to do this? Thanks, --Josh Tag: disable close button of system menu Tag: 75821
  - 3
    - Mouse Cursor transparent image hi, I wonder if it is possible to make mouse cursor image transparent (using alpha bending). thanks. Tag: disable close button of system menu Tag: 75819
  - 4
    - Trapping DataGrid initial load (to extract a row, column value for display in a TextBox) This is a multi-part message in MIME format. ------=_NextPart_000_008D_01C47E12.9185E980 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable We have a DataGrid in one of our forms, and would like to bind one of = the=20 columns to a TextBox on the form. We almost have the code wired up; the contents of the TextBox is properly set every time the current row=20 position changes. However, we still haven't figured out how to set the=20 TextBox contents the very first time the DataGrid is loaded. Can anyone suggest what we can do?=20 Thanks, RD ------=_NextPart_000_008D_01C47E12.9185E980 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 6.00.2800.1458" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY> <DIV><FONT face=3DArial size=3D2>We have a DataGrid in one of our forms, = and would=20 like to bind one of the </FONT></DIV> <DIV><FONT face=3DArial size=3D2>columns to a TextBox on the form. We = almost have=20 the code wired up;</FONT></DIV> <DIV><FONT face=3DArial size=3D2>the contents of the TextBox is properly = set every=20 time the current row </FONT></DIV> <DIV><FONT face=3DArial size=3D2>position changes. However, we = still=20 haven't figured out how to set the </FONT></DIV> <DIV><FONT face=3DArial size=3D2>TextBox contents the very first time=20 the DataGrid is loaded.</FONT></DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2>Can anyone suggest what we can do? = </FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>Thanks, RD</FONT></DIV></BODY></HTML> ------=_NextPart_000_008D_01C47E12.9185E980-- Tag: disable close button of system menu Tag: 75817
  - 5
    - Scrollbar questions Hi, I'm having two questions regarding the scrollbar control: 1. How can I set the page size? Will I have to do it the "unmanaged" way? 2. How can I tell the scrollbar to look "themed"? Thanks! Jens Tag: disable close button of system menu Tag: 75807
  - 6
    - Riddle me this: Mdi FormBorderStyle.none code resize vs. border resize I have a Mdi window with FormBorderStyle.none. I have one user control (holding a few normal controls) that is set to docking fill in the Mdi. I use the mouse down, move, and up events on my control to resize the Mdi. It works. However, as I resize the form the painting is very choppy, showing the inner controls drawn at different sizes until I stop resizing. If I turn the FormBorderStyle back on and use the forms borders to resize I do not see this choppy drawing effect and it looks great. What am I doing wrong? Thanks Bob Tag: disable close button of system menu Tag: 75804
  - 7
    - where find a 'color comboBox' as used in Visio? Hello, I'm developping a windows forms app in C#, and i wanted to use 'color combobox box'. This control is used in Visio: Tools > options > view > color settings Is this control a standard control? where/how can i find it? Thanks for your help Tag: disable close button of system menu Tag: 75801
  - 8
    - How to make some portion of Picture box transparent Hi friends, I want to make some portion of image transparent. I written following code in Paint event of picturebox Bitmap bmpPic = new Bitmap(picHeader.Image,picHeader.Width,picHeader.Height); Color backColor = bmpPic.GetPixel(1,1); bmpPic.MakeTransparent(backColor); picHeader.BackgroundImage = bmpPic; But it is not working please help me Tushar Tag: disable close button of system menu Tag: 75800
  - 9
    - Right to left Menu Bug!!!! I am writting a MDI application which has a menu bar. I set the Righttoleft property of Mdi form to "RighToLeft" . But when I run the application the position of all the menu items in menu bar (top level items) change!!!!. and after moving mouse cursor on them they will refreshed and be correct. Please Help me....!!!!!!!! Tag: disable close button of system menu Tag: 75798
  - 10
    - What is the best way to moving managed code to unmanaged code? Hi Group, I have an application which is web based. I am hosting it on VB.Net container, ie winform. Now i am facing a problem. If i make an exe of that, then i require .net framework installed on that machine where i am going to run this. So I want to move this managed code to unmanaged side i,e to VC++ by converting VB.Net code to VB 6.0 and then importing VB 6.0 dll in VC++. My Question is, Do u people have any better approach to solve this problem? My Goal is without having framework installed i want to run my app. Thanks Sachin Tag: disable close button of system menu Tag: 75793
  - 11
    - Owner draw on the MainMenu and MenuItem Like most fans of eye candy, I've always thought the standard MainMenu control was a bit drab. After looking at third party components, I decided to see if I could brute force it into looking nice. I set the owner draw on the menu items to true, and draw the MenuItems differently depending on whether or not their selected, thus providing nice Outlook 2003 menu styling. The only problem is, there is no 'unselected' event, so I can't redraw the item when the mouse or keyboard has moved elsewhere. The only thing I could find that semi-worked, was to call an internal method on the MenuItem object to force a redraw. This works OK for everything apart from the root level MenuItem. When I try this method on the root level MenuItem it, for want of a better phrase, spags out and messes up the painting of the whole form. Not grumbling too much, it is afterall an internal method. Anyone know of a way to work with the MainMenu et. al. classes to make them look nice rather than replacing them? Cheers, Tim H Tag: disable close button of system menu Tag: 75788
  - 12
    - How to Print a WinForm can anyone tell me, how to print a winform... -- Great!! ChristManIn Tag: disable close button of system menu Tag: 75782
  - 13
    - how to convert object to Forms.Label type ??? I'm developping a windowsForms app in C# As i created a lot of labels programmaticaly in the form_Load() ispecify the following to manage the event in the same way for all of my labels: So in this sub i wanted to call another form with a specific contructor which set specific values from with the settings of the caller (obviously a Label) My code is the following: private void _ChangeSettings(object sender, System.EventArgs e) { //MessageBox.Show(string.Concat("_changeSettings", sender.GetType(), "//", sender.ToString() )); //Load Form1 with the caller if (sender.GetType().ToString() == "System.Windows.Forms.Label".ToString()) {System.Windows.Forms.Label lbl = sender; Form1 f = new Form1(lbl); f.Closed += new System.EventHandler(this._ChangeLabelSettings); f.Show();} } when i'm building my solution i have the following error Cannot implicitly convert type 'object' to 'System.Windows.Forms.Label' How to convert object to Forms.Label???? Thanks for your help Tag: disable close button of system menu Tag: 75778
  - 14
    - combobox not clearing I have a form with 4 combo boxes and several text boxes. All combos are filled in the form load event. The first combobox contains names and this is the code to fill it: 'istantitiate data tier object mobjUnityGroup = New UnityGroupData 'get the list of names from the data tier dvNames = mobjUnityGroup.getNames With cboName .DataSource = dvNames .DisplayMember = "Name" .ValueMember = "ChildID" .SelectedIndex = -1 End With All other combo boxes are filled at the same time and the same way (with different datasource, display member, valuemember). I select a name and in the selectedindexchanged event, the fields are filled in and bound to the form. That works fine. However, after editing the record and saving, by clicking the Save button on the form, I wish to clear all fields, including the combo boxes. All combo boxes clear except the cboName. I another procedure I am setting all combo boxes' selectedindex = 0 and then selectedindex = -1 per the bug. All works fine except for the name combo box. I am getting an error "Object reference not set to an instance of the object" Anyone have any idea why this is happening? Tag: disable close button of system menu Tag: 75777
  - 15
    - form Location Question [please help] Hi Every One, How can i load my form above the systray ? please note that there are systems that the systray is in the right side :-) Thanks, T :-) Tag: disable close button of system menu Tag: 75776
  - 16
    - Lock part of text in RichTextBox This is a multi-part message in MIME format. ------=_NextPart_000_000C_01C47E22.F0198A50 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi, friends: =20 Do you know how to lock some of text in RichTextBox? Because I don't = want user to change what other people have already wriiten in the = RichTextBox. Thanks, Dennis Huang ------=_NextPart_000_000C_01C47E22.F0198A50 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 size=3D2>Hi, friends:  </FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>Do you know how to lock some of text in <FONT=20 size=3D2>RichTextBox? Because I don't want user to change what other = people have=20 already wriiten in the RichTextBox.</FONT></FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>Thanks,</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>Dennis Huang</FONT></DIV></BODY></HTML> ------=_NextPart_000_000C_01C47E22.F0198A50-- Tag: disable close button of system menu Tag: 75772
  - 17
    - Outlook like reminder window Hi I would like a dialog of reminders to appear on top of all other apps. I also do not want it to be modal in a way that it blocks the app until it is closed. This is similar to outlook reminders windows behaviour. Anyway I can achieve this with vb.net forms? Thanks Regards Tag: disable close button of system menu Tag: 75771
  - 18
    - RichTextBox Error with AppendText() I receive an error: "Object reference not set to an instance of an object." when having this code call which makes no sense as this is a richtextbox control. I have also placed the trace of this which seems to show this error occurs within RichTextBox but it doesnt fire the catch. I had to put a separate startup block in order to even catch this error - otherwise if it was in the main form it would just fail and disappear with a Windows Forms error. Does anyone have a clue what is going on here? Thanks! Ben Private Sub Socks_SessionRemoteDataArrival(ByVal Sender As Object, ByVal e As ThinkTekLabs.ProxySystem.Base.Session.RemoteDataArrivalEventArgs) Handles Socks.SessionRemoteDataArrival Try Dim s As String = System.Text.Encoding.ASCII.GetString(e.DataB) RT.AppendText("REMOTE**: " + vbCrLf + s + vbCrLf) Catch ex As Exception 'MessageBox.Show(ex.Message) End Try End Sub The Try Catch is not triggered and the trace shows the following: at System.Windows.Forms.RichTextBox.EditStreamProc(IntPtr dwCookie, IntPtr buf, Int32 cb, Int32& transferred) at System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam) at System.Windows.Forms.NativeWindow.DefWndProc(Message& m) at System.Windows.Forms.Control.DefWndProc(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.TextBoxBase.WndProc(Message& m) at System.Windows.Forms.RichTextBox.WndProc(Message& m) at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.PeekMessage(MSG& msg, HandleRef hwnd, Int32 msgMin, Int32 msgMax, Int32 remove) at System.Windows.Forms.ComponentManager.System.Windows.Forms.UnsafeNativeMethods+IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(Form mainForm) at TestExe.startup.Main() ----------------------------------------------------------- Tag: disable close button of system menu Tag: 75769
  - 19
    - Copy DataRows to Typed DataSet Hello, I developed a custom Windows control that displays a data grid of all orders for a customer. Since the control only needs to use the Orders table within the parent data set (along with the customer ID to filter), it seemed logical to only give the control what it needs. That's my reasoning for the code below... \\\ Public Sub New(ByRef Orders As myTypedDataSet.OrdersTable, _ ByVal CustomerID As Integer) MyBase.New() InitializeComponent() dsLocal.Orders = Orders _Customer_ID = CustomerID End Sub Private _CustomerID As Integer Private dsLocal As myTypedDataSet Private Sub ctlOrdersForCustomer_Load(ByVal _ sender As System.Object, ByVal e As System.EventArgs) _ Handles MyBase.Load myDataView.Table = dsLocal.Orders myDataView.RowFilter = "CustomerID = " & _CustomerID.ToString myDataView.Sort = "OrderDate DESC" myGrid.DataSource = myDataView End Sub /// My problem is that I can't pass the Orders table as an argument because it is part of a typed data set. VS.NET complains about dsLocal.Orders being read-only in the following statement of the constructor: dsLocal.Orders = Orders How can I set the local typed dataset table to the incoming parameter? I've also tried the Copy, ImportRow, and LoadDataRow methods with no luck. Does anyone know how this can be done? Thank you very much! Eric Tag: disable close button of system menu Tag: 75768
  - 20
    - Finding all controls of specified type on a form I need to find all instances of a specific type of control on a Windows Form -- for example all DataGrids. The code I came up with is this: foreach(Control ctrl in this.Controls) { if(ctrl.GetType() == Type.GetType("System.Windows.Forms.DataGrid")) Console.WriteLine(((DataGrid)ctrl).Name); } This code has two problems. Something's wrong with the type checking, because it doesn't find any DataGrids on a form. Even if it did work, the second problem is that this would find only DataGrids put directly on the form (in the Form.Controls collection), but a Grid can also be in the ControlCollection of a GroupBox or some other container. How to loop through all controls in a form regardless of their parent control? Best regards, Joe Tag: disable close button of system menu Tag: 75766
  - 21
    - saveFileDialog - bug & question Ok, I finally got to .NET development after a long break and i decided to write an app :) I started with functionality classes, so my app is currently console, and what it did (at work) was do something, get big xml document assembled, and then prompt the user for sme path to save it to and save it. Here's the basic code (sorry, it's not indented correctly, I posted right from VS and it doesn't seem to keep indent; well, it is small and simple anyway): public static int Main(string[] args) { XmlDocument xmlDocument = new XmlDocument(); FileSystemInfoLister xmlFS = new FileSystemInfoLister(); xmlFS.Extension = "mp3"; xmlDocument = xmlFS.GetFileSystemInfoList("e:\\"); SaveFileDialog saveFileDialog = new SaveFileDialog(); saveFileDialog.Filter = "xml files (*.xml)|*.xml|All files (*.*)|*.*" ; saveFileDialog.FilterIndex = 1; saveFileDialog.RestoreDirectory = true; saveFileDialog.OverwritePrompt = false; saveFileDialog.DefaultExt = "xml"; if ( saveFileDialog.ShowDialog() == DialogResult.OK ) { xmlDocument.Save(saveFileDialog.FileName); } return 0; } The classes finsih functioning and the program hangs up. Console window is up and nothing's happening. If oyu break it, turns out, it is hanging on "if" line. I tried moving showdialog to separate line before if - it is hanging on it. If you step into, step over or continue, it continues hanging; break it and it is on the same line. No dialog appears. What's happening? Oh and btw, there's addtional problem with dialog. When it worked (at work ;) ), the dialog behaved strangely without saveFileDialog.OverwritePrompt = false; line. Namely, it returned "Cancel" result when I picked existing file and confirmed that I want to overwrite it. Why's that? Tag: disable close button of system menu Tag: 75765
  - 22
    - Making updates to DataTable/DataGrid from within another thread Hi all! In my app I implemented a separate worker thread that handles network communication using Net.Sockets. It needs to make updates to a DataTable object, which is displayed to the user by a DataGrid control. The DataTable object is a 'public static' field instantiated within context of the main thread. The problem is that if I add a column to the DataTable from within the worker thread (eg. different thread than where the DataTable and DataGrid reside in), all columns suddenly disappear from the DataGrid view for some reason; Controller.dataTable.Columns.Add(new DataColumn("TestColumn")); If I move this code to the main thread, it works fine. After adding new column, I looked at dataTable with debugger and it seemed fine. So the culprit must be the DataGrid control. Do I need some kind of thread synchronization? Tag: disable close button of system menu Tag: 75764
  - 23
    - Databinding COM object properties When attempting to add databindings between a simple COM object properties and text box fields, I get the following error: Unhandled Exception: System.ArgumentException: Cannot bind to property or column Id on DataSource. Parameter name: dataMember at System.Windows.Forms.BindToObject.CheckBinding() at System.Windows.Forms.BindToObject.SetBindingManagerBase(BindingManagerBase lManager) at System.Windows.Forms.Binding.SetListManager(BindingManagerBase bindingManagerBase) at System.Windows.Forms.ListManagerBindingsCollection.AddCore(Binding dataBinding) ... I have a trivial form that contains 3 text boxes (id, first name, last name) and the form class instantiates the COM object in the constructor. Also in the constructor, I add the databindings: public Form1() { InitializeComponent(); m_edtId.DataBindings.Add("Text", m_user, "Id"); m_edtLastName.DataBindings.Add("Text", m_user, "LastName"); m_edtFirstName.DataBindings.Add("Text", m_user, "FirstName"); } The COM object has get/set for these three properties and works fine if I don't use databinding. Also, if I replace the COM object with a managed class that has these properties, I don't have any problems with the databinding. Thanks for any assistance. Tag: disable close button of system menu Tag: 75763
  - 24
    - Deployment Question (networked) Hi all, I'm relatively new to .Net and especially the Windows side of it (I come from a web background). I have recently started dabbling in Windows apps - one thing I would like to be able to do is install my application across several PC's on a network, can anyone suggest how this could be achieved? My application will be using a small xml file as a config file - I was going to have one of these present for each install of the application - however I think it might be better if this was in one central location (ie on the server) so that a) a normal user would be unable to change it, b) when it needs changing its only changed in one location - not across 30+ client PC's etc. Can anyone advise as to whether this is a good approach - or whether having a config file for each installation would be better - a bonus of this would be if the server was ever to fail the client apps could still run as they'd have their own config files etc. I have used the Install Wizard in Visual Studio once - and it seemed very straight forward, and put a pretty front end to the install process - I have no idea however whether this is particularly customisable, ie, what if I want to still have a file on each install (client) that tells it where to get the main config file from - this should be perhaps something entered during the install yet the Wizard did not seem to give any options for adding extra information(ie, asking questions) during the install process - other than the location of where the application would be installed. Any information at all on this subject would be appreciated. Kind regards Rob Meade Tag: disable close button of system menu Tag: 75762
  - 25
    - Form Location Question Hi Every One, How can i load my form above the systray ? please note that there are systems that the systray is in the Left side :-) Thanks, T :-) Tag: disable close button of system menu Tag: 75760
- Next
  - 1
    - SendMessage doesn't work when window has ShowInTaskbar set to false I have two applications, one is sending a message, one is receiving. The sending app's code is as follows: ------------------------------------------------------------------------ private void Main() { Process p = Process.GetProcessesByName("MyApp")[0]; SendMessage(p.MainWindowHandle, 0xA123, IntPtr.Zero, IntPtr.Zero); } [DllImport("user32.dll", CharSet=CharSet.Auto, SetLastError=true)] private static extern IntPtr SendMessage(IntPtr hwnd, uint Msg, IntPtr wParam, IntPtr lParam); ------------------------------------------------------------------------ The code for the window receiving the message is as follows: ------------------------------------------------------------------------ protected override void WndProc(ref Message m) { if(m.Msg == 0xA123) { MessageBox.Show("Called"); } base.WndProc(ref m); } ... this.ShowInTaskbar = false; ------------------------------------------------------------------------ Messages are not received when ShowTaskbar is set to false. Any ideas on solving this issue? Thx Tag: disable close button of system menu Tag: 75757
  - 2
    - winform constructor Hi, Can a winform have 2 overloaded constructors? Thanks ushas Tag: disable close button of system menu Tag: 75752
  - 3
    - Outlook Security and VB.Net This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C47C03.D8314430 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable All - I have a program that gets the address book. The user then selects = a person and that value is loaded in a textbox and saved to a database. = Everything works fine except for the virus protection feature. I get the = expected message: A program is trying to access e-mail addresses you have stored in = Outlook.... Where is a good place to figure out how I can work with this, mainly by = using a secure way to publish my app to Outlook or trust it or something = so my users do not receive the message box and have to respond to it. Thanks,=20 BRIAN HAMMER ------=_NextPart_000_0008_01C47C03.D8314430 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 6.00.2800.1458" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>All - I have a program that gets the = address book.=20 The user then selects a person and that value is loaded in a textbox and = saved=20 to a database. Everything works fine except for the virus protection = feature. I=20 get the expected message:</FONT></DIV> <DIV><SPAN class=3DOTATtl>A program is trying to access e-mail addresses = you have=20 stored in Outlook....</SPAN></DIV> <DIV><SPAN class=3DOTATtl></SPAN> </DIV> <DIV><SPAN class=3DOTATtl><FONT face=3DArial size=3D2>Where is a good = place to figure=20 out how I can work with this, mainly by using a secure way to publish my = app to=20 Outlook or trust it or something so my users do not receive the message = box and=20 have to respond to it.</FONT></SPAN></DIV> <DIV><SPAN class=3DOTATtl><FONT face=3DArial = size=3D2></FONT></SPAN> </DIV> <DIV><SPAN class=3DOTATtl><FONT face=3DArial = size=3D2>Thanks,</FONT></SPAN><FONT=20 face=3DArial size=3D2> <BR>BRIAN HAMMER</FONT></DIV></BODY></HTML> ------=_NextPart_000_0008_01C47C03.D8314430-- Tag: disable close button of system menu Tag: 75749
  - 4
    - Custom Components, Threads, and Invoke I've created a custom component that is derived from the Component class. This component can be added to a form. What I've noticed is that I run into problems if I call methods on the component from a different thread than the one in which it was created. I'm aware that you should never access a windows form control from another thread but should call the parent form's Invoke or BeginInvoke methods passing them a delegate they can call that will in turn access the control. Does this apply to custom components as well? If so, is this documented any where? Tag: disable close button of system menu Tag: 75746
  - 5
    - Overflow or underflow in arithmetic operation in CrystalReportView I am boggled by this. I have a form that calls another form that runs a crystal report viewer in it. My program was running fine. I modified it a little bit and try to run it again and now I get the error "Overflow or underflow in arithmetic operation" everytime the form trys to load because in the InitializeComponent() function in .net when it is trying to create the crystal report viewer it crashes and throws that error. I do not know what causes this error. I'd appreciate a way to troubleshoot this thanks. David Tag: disable close button of system menu Tag: 75745
  - 6
    - ExecuteCommand on Windows Service I have a windows forms app that interacts with a windows service that I made. My windows forms app can iteract with the windows service well. It can start & stop the service, etc. But one thing it cannot do is call the ExecuteCommand method of the windows service. I get an "access denied" error message when I try. I've come to understand that the service must somehow have the correct ACL's set to allow this. But I don't know how to set up the correct ACLs. I'd like to do it programmatically if possible, but even a manual solution would be better than nothing for now. Any suggestions? Thanks, Steve Tag: disable close button of system menu Tag: 75742
  - 7
    - ApplicationContext for multiple forms and SaveFileDialog I created an ApplicationContext class to allow my application to have multiple top-level forms. The code is similar to the MSDN sample ImageBrowser article (Chris Anderson) to provide the MDI like behavior not found in Windows Forms. (I've extended it a bit so I can get any command line arguments off of subsequent invocations.) This seems to work very well for maintaining the open forms and exiting the application when the last window is closed. However, I am seeing an issue that is easy to reproduce even in a smaller sample application. 1. Start the application, see Form1 2. Create Form2 (from a button on Form1) 3. Close Form1 4. Select File.Save on Form2 which creates a default SaveFileDialog. 5. Select a file that already exists and press Save. This throws an ObjectDisposedException siting Form1 as disposed. This occurs when the SaveFileDialog is trying to display the overwrite prompt (messagebox). A stack trace shows EnumThreadWindows to disable all top level forms, retrieves the disposed form and tries to create a handle. (If I turn off the SaveFileDialog.OverwritePrompt property, it just overwrites the file but no exception is thrown). My guess is that there is a bug in the framework so I'm looking for a work around to this. Thanks for any help. *** Sent via Developersdex http://www.developersdex.com *** Don't just participate in USENET...get rewarded for it! Tag: disable close button of system menu Tag: 75741
  - 8
    - No-touch deployment question I want to launch a smart client application using no-touch deployment through internet explorer with a web browser window inside the windows form app which is loaded using no-touch. I am able to accoumplish this with simple applications WITHOUT the ie window. Here is what my ultimate goal is: I need to launch a windows form application using no-touch deployment through IE. Windows form app must contain an IE window inside. I can build a windows app with the IE window inside, however it operates using a COM call to shdoccvw.dll. and i don't know how to allow it to use it during no-touch deployment. Any way to get around this issue? Thank you Tag: disable close button of system menu Tag: 75739
  - 9
    - Invisble controls Please, Help!!! When a control is visible=false, or is used in a tabpage that is not the current one, de value is not updated in the control. For examples, use a tabControl, place two tabpages, in the tab 2 place a textbox control, in the tab 1 place a button that set a text to de textbox in the tab 2, when running, click the button and go to the next tab, and you will see no value in de textbox. Expand AllCollapse All Manage Your Profile |Rules of Conduct -------------------------------- From: Carlos Caraballo ----------------------- Posted by a user from .NET 247 (http://www.dotnet247.com/) <Id>0fnaOTQs/UK634jh2l3byA==</Id> Tag: disable close button of system menu Tag: 75738
  - 10
    - AutoScroll - How to set smallchange & largechange values? Anyone know how to set these? Steve Tag: disable close button of system menu Tag: 75727
  - 11
    - Directory Selection Dialog How do I invoke the standard windows dialog which allows the user to browse the filing system and choose a directory or a file ? Tag: disable close button of system menu Tag: 75721
  - 12
    - Event used to change pages in a page form? I have a multi page form, and in some processing I need the user to switch to a different page. This code doesn't seem to get the switch to happen. this.dsVehicle = this.oSingle.GetVehicle(lnKey); // update dataset for editing this.VehiclesPage.Show(); // switch page Tag: disable close button of system menu Tag: 75720
  - 13
    - Property grid navigation I have implimented a custom data grid and property gid on several of my forms. I find it really nice when updating multiple record. I select a dozen record or so and the property grid gives me the fields to change and the ones I change affect all. The problem is I have several customer complaining about the property grid navigation. I guess most people have gotten use to the tab key for field changing. Is there maybe some directions on property grid navigation I could refer to? I can only assume I am doing it wrong. Regards, John Tag: disable close button of system menu Tag: 75717
  - 14
    - Scroll RichTextBox How do I programatically scroll a RichTextBox to the end of it's contents ? Tag: disable close button of system menu Tag: 75707
  - 15
    - How to embed old C++ window into .NET form? I have a drawing application written in C++, and want to use it in a framework written in C#. Since the amount of C++ code is very large, it's unpractical to translate them to C#. So I want to use the window in C++ as a control in C#. It seems there are a lot of method to do this : 1. Rebuild the C++ code in C++/CLI, and try to call it in managed world. 2. Pass the HWND of a C# form to the C++ code, and attach it to a C++ Window and draw on it. 3. Pass the HWND of a C++ window to C# code, and attach it to a C# form and draw on it. 4. Pass the HDC of the C# form to the C++ code, and draw on that DC. 5. ... I think this is a common problem in porting old C++ code to C#, so there must be someone has already solved this problem. Could anyone give me some advice? Thanks! Tag: disable close button of system menu Tag: 75705
  - 16
    - Screensaver with WinForms on multiple screens Hello, I have a question about how to display a single windows form on multiple monitors at the same time. I took the C# 2005 Express - demo project for the screen saver as an example - but in case you have multiple monitors this screen saver is only displayed at the main screen and not on the secondary display. Is there an easy way to display exactly the same output on both screens or to modify the form in a way that it spans over both (or even better: any) available screens? Thanks in advance, Sebastian Gingter Tag: disable close button of system menu Tag: 75704
  - 17
    - Windows RadioButtons Group Hie Can you please assist me on how to automatically select/check a radiobutton depending on a value from a SQL Server database. I have several groups of windows radiobuttons in VB.Net. This is easier done in a web application but not so obvious in a windows application. Thank you -- Aleck Tag: disable close button of system menu Tag: 75696
  - 18
    - create an instance of type 'System.Attribute' I created a BindingListView that subclasses from ListView ... when switch to designer mode I get ... The designer must create an instance of type 'System.Attribute' but it cannot because the type is declared as abstract. Poor designer. Anyone know how I can help him out? Tag: disable close button of system menu Tag: 75692
  - 19
    - DataGrid array Greetings, I have an array of DataGrid classes. Each DataGrid in the array needs to handle the SizeChanged event. How do I dynamically accomplish this using vb.net? In other words, how do I programmatically set a handler for each DataGrid in the array? Thanks! --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.732 / Virus Database: 486 - Release Date: 08/01/2004 Tag: disable close button of system menu Tag: 75691
  - 20
    - Justifying Text in a RichText control I'm attempting to format rich text with C# by sending messages to the underlying richedit control. The text can be formatted by sending an EM_SETPARAFORMAT message. However, when I set the wAlignment to be PFA_JUSTIFY, it doesn't work. I know that this option only works with Rich Edit 2.0 or later version. Wouldn't VS .Net 2003 be using at least that version of the control (or newer)? Has anyone gotten this to work? Thanks in advance! Tag: disable close button of system menu Tag: 75688
  - 21
    - icons grouping with generic icon in XP toolbar I have my XP configured to group icons if there is more than 1 icon (window) associated with an application. each of my .NET forms has a custom icon for the application but when they are grouped on the XP icon they become a generic application icon (a white box with a blue strip on the top). if i click on this icon then a sub-menu opens up with each individual form *with* the custom icon correctly shown. how can i ensure then when XP groups icons that they retain the custom icon for my application ? -simon Tag: disable close button of system menu Tag: 75684
  - 22
    - Calling Function on other Form C# Hello I open a new form and do some stuff, and when I am done I want to call a function on the original form... how can i do this? Do I need to send in the calling form as a reference or something? if so, how exactly do i do this? thanks. **Form1:** public void UpdateSchedule() { // do stuff } private void mnuSchedule_Click(object sender, System.EventArgs e) { frmSchedule fSchedule = new frmSchedule(); fSchedule.ShowDialog(); } **frmSchedule:** private void btnSave_Click(object sender, System.EventArgs e) { // do some stuff frmSchedule.UpdateSchedule(); Close(); } Tag: disable close button of system menu Tag: 75676
  - 23
    - Script passingstrings to form... Hi, please anyone could supply a piece of code in order to have in my c# program the string links(i).href? This script runs from Internet Explorer clicking on web page and supplies all the link of that page. I need an example on how the program receives the strings from the script. My simple method would be : private void myurl(string aurl) { listview1.items.add(aurl) } in order to receive the string aurl.... Thanks....all. <script language="VBScript"> set c_url = CreateObject("MyClass.url_to download") set links =external.menuArguments.document.links for i = 0 to links.length-1 c_url.myurl links(i).href next </script> Tag: disable close button of system menu Tag: 75674
  - 24
    - Netadvantage Ultracombo & date time problem Hi I have this application that I am fighting with for days now. Here is the whole project; www.infovis.biz/tasks.zip. Please run and press the new task button to see what I mean. Much of the code is either form taskvision or infragistics samples btw and requires netadvantage 2004 vol2. I have the following problems with this and would appreciate any help I can get; 1. When I click in the clients field, I then click on any other field the cursor is stuck in the client field requiring an entry to be typed or selected. How can I make it so I can leave this field blank if I want to? 2. When a value is typed in the subject, details etc. fields, the time part of 'Remind date' disappears. 3. In any event, the remind date & time are not being stored properly in the tbltasks table in the access database. Not sure where in the code these values are lost even though I can see them on the screen when saving the new task form. 4. When I type a value in any field apart from client field, a 0 appears in the client field if it is blank. How can I avoid that? Thanks Regards Tag: disable close button of system menu Tag: 75665
  - 25
    - How do I simulate a tab event in code? I would like to trap TextChanged events and validate them for correct values from values coming in from a pen panel. If the values are valid, I want to automatically tab to the next control. But.... How do I raise the tab event in software? Tag: disable close button of system menu Tag: 75664

When I disable the close button of a form (in MC++)

::EnableMenuItem(hMenu, SC_CLOSE, MF_BYCOMMAND | MF_GRAYED);
::DrawMenuBar(hwnd);

everything works as expected. But when I show a MessageBox the close button
is not gray and appears to be pressed (tested on XP with themes enabled).
Anyway to get it gray in this situation?

Thanks

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