Problem with showing/hiding forms

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  - 1
    - Drawing.dll "The object is currently in use elsewhere" I have an app which makes a number of calls to Drawing.DLL. It seems to crash at random points during program execution. No matter how I try to surround every call with try / catch blocks I simply cannot pinpoint the error. The debugger takes me into the DLL's assembler code. This indefinite use of the definite article "the object" is a common MS figure of speech. Does anyone have any idea which object it could be that's in use and what the problem might be ? Bob Tag: Problem with showing/hiding forms Tag: 67350
  - 2
    - window: Always in front / always on top Hello, i'm building an application and i want my window to always be on top. The perfect example off this is the windows task manager. I've translated dutch back into english, so i don't know if it's the exact translation: In the menu options the first menu option is "Always in front". Does anyone know the code for that in c#.NET? (the window should NOT get the focus though) Thanks in advance. Jeroen Pot Tag: Problem with showing/hiding forms Tag: 67348
  - 3
    - Bug in PrintPreviewDialog? I had a devil of a time setting the Icon for a class I made that inherits from PrintPreviewDialog. I noticed that someone else (post is in microsoft.public.dotnet.languages.csharp) had this same question. I created a new dialog: public class WindowsPrintPreviewDialogExtended : System.Windows.Forms.PrintPreviewDialog When I bring this class up in Visual Studio in designer mode, it has almost no properties. Just Document, UseAntiAlias, (DynamicProperties), (Name), DrawGrid, GridSize, Locked, SnapToGrid, Language, and Localizable. Many of the properties available for other forms, in particular the whole WindowStyle group, don't show up. Furthermore, when looking at code, typing "this." shows the Intellisense list for the class, which is just as sparse. There seems no way to set the icon. However, if you do the following, you can set it by hand: 1. Add "using System.Globalization;" to your code. 2. At the start of your constructor, add: System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(<yourClassName>)); where <yourClassName> is the name of your class. 3. After "InitializeComponent();" add: this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon"))); Never mind that Intellisense doesn't recognize "Icon" as a valid property. In this case (for some reason) Intellisense isn't very intelligent. 4. Create a normal, vanilla Form in your project. Set the icon in that form. Now open the form's .resx file in Visual Studio. Switch to .XML mode. At the bottom of the file you will see a <data> tag with the name "$this.Icon". Copy this entire tag (down to and including </data>) onto the clipboard. 5. Open the .resx file for your print preview dialog in Visual Studio. Switch to XML mode. Paste the <data> tag and all of its contents to the end of the file, just before the </root> closing tag. 6. Delete the vanilla form that you added to your project. This will set the icon for your print preview dialog. Does anyone have any idea why PrintPreviewDialog would act like this? Does anyone know why, in the .NET documentation, PrintPreviewDialog is listed as having no Icon property under "list all members", even though its parent class, "System.Windows.Forms.Form", according to the same documentation, has a public Icon property? (And in .NET it's impossible to obscure properties of parent classes.) To add to the mystery, there is documentation for a PrintPreviewDialog.Icon property (oddly inaccessible from the documentation for PrintPreviewDialog), that claims that "This member supports the .NET Framework infrastructure and is not intended to be used directly from your code." You can see it here: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemWindowsFormsPrintPreviewDialogClassIconTopic.asp Curiouser and curiouser. Tag: Problem with showing/hiding forms Tag: 67347
  - 4
    - empty or null in combobox Hello how do i this: In a form there is a combobox. The combobox is bound to a lookuptable. What i have to do, that a empty oder null value could be choosen, but the empty/null value isn't in the lookup table. Thank you Matthias Tag: Problem with showing/hiding forms Tag: 67344
  - 5
    - Binding textboxes to dataset relationship I have 2 textboxes. Each show a field from a different table (2 tables). The dataset has a relationship defined. I want my navigation button to navigate through the records. So that when the record in one table is selected, the textboxes bound to the other table change accordingly Also, there might not be a relationship associated between the tables for certain records any ideas? Tag: Problem with showing/hiding forms Tag: 67341
  - 6
    - CheckedListBox Hi I'm trying to use CheckedListBox.SetItemChecked method and i'm not getting anything checked I tried to bind checkedlistbox like this Dim cn As SqlConnectio Dim cm As SqlComman Tr cn = new SqlConnection(my_con_string cn.ope cm = new SqlCommand(cn With c .CommandType = CommandType.StoredProcedur .CommandText = "my_sp End Wit Dim da As SqlDataAdapter = DataBaseObjectProvider.OpenAdapter(cm Dim dt As DataTable = New DataTabl da.Fill(dt cbo.DataSource = d cbo.DisplayMember = strDisplayMembe cbo.ValueMember = strValueMembe da.Dispose( cm.Dispose( cn.Close( cn.Dispose( or like this Dim cn As SqlConnectio Dim cm As SqlComman Tr cn = new SqlConnection(my_con_string cn.ope cm = new SqlCommand(cn With c .CommandType = CommandType.StoredProcedur .CommandText = "my_sp End Wit Dim dr As SqlDataReader = cm.ExecuteReader(CommandBehavior.Default Dim arl As New ArrayLis Do While dr.Rea arl.Add(New ListControlItem(CType(dr.Item(strDisplayMember), String), CType(dr.Item(strValueMember), Integer)) Loo cbo.DataSource = ar cbo.DisplayMember = "Text cbo.ValueMember = "Value dr.Close( cm.Dispose( cn.Close( cn.Dispose( where ListControlItem looks like this Public Class ListControlIte Private m_Text As Strin Private m_Value As Intege Public Property Text() As Strin Ge Return m_Tex End Ge Set(ByVal Value As String m_Text = Valu End Se End Propert Public Property Value() As Intege Ge Return m_Valu End Ge Set(ByVal Value As Integer m_Value = Valu End Se End Propert Public Sub New(ByVal text As String, ByVal value As Integer m_Text = tex m_Value = valu End Su End Clas In both cases I get valid data in checkedlistbox But when I use SetItemChecked(index, true) nothing is shown. I get ItemChecked event with newvalue = Checked But it doesn't show item is being checked Does anybody know what I'm doing wrong Thanks Tag: Problem with showing/hiding forms Tag: 67338
  - 7
    - Crystal Viewer - suppresion formulas Hi I have a problem with a crystal reports viewer I have developed with VS.NET 2003. Everything was working fine until I tried to view reports with suppression formulas... Eg. suppress (no Drill Down) group header 3 when: DrillDownGroupLevel < this formula should return True or false and work fine when I run it in crystal report v9 but with the viewer I get the error message "Error in File ReportPath\ReportName.rp Error in formula <Section_Visibility 'DrillDownGroupLevel < 1 The remaining text does not appear to be part of the formula I am desperate for some help as I can't figure out what is wrong... Any comments or suggestions would be welcome Thank you Georges Tag: Problem with showing/hiding forms Tag: 67336
  - 8
    - Exporting an unvisible datagrid to excel C# Hi I've got a datagrid I want to export to excel, but do not want to display it on the webform. If I make it unvisible, it doesn't export the data in the datagrid. But if visible, it does export data. Do you know how I can still keep the datagrid unvisible, but be able to export the data? Tag: Problem with showing/hiding forms Tag: 67325
  - 9
    - Deployment COM Interop question Hello All, I have a .NET component which needs to be deployed on the target machine so that It can be exposed to the COM world. On the development machine, the 'register for com interop' setting when set to true, does the trick. When I deploy it on a target machine (I am using Installshield Professional 6.3) how do I register the assembly? Has anybody done it through installshield? The other thing is when If I copy this assembly on the target machine, and run regasm MyAssembly.dll, I can see the Object in the OLE / COM viewer but not the interface which this object implements. Am I doing something wrong. The tlb that is generated during the build is a separate file and its not embedded in the dll. Any inputs? TIA, --Saurabh PS : Sorry for posting to this newsgroup though its not exactly a forms question Tag: Problem with showing/hiding forms Tag: 67323
  - 10
    - Deployment COM Interop question Hello All, I have a .NET component which needs to be deployed on the target machine so that It can be exposed to the COM world. On the development machine, the 'register for com interop' setting when set to true, does the trick. When I deploy it on a target machine (I am using Installshield Professional 6.3) how do I register the assembly? Has anybody done it through installshield? The other thing is when If I copy this assembly on the target machine, and run regasm MyAssembly.dll, I can see the Object in the OLE / COM viewer but not the interface which this object implements. Am I doing something wrong. The tlb that is generated during the build is a separate file and its not embedded in the dll. Any inputs? Tag: Problem with showing/hiding forms Tag: 67322
  - 11
    - ShowWindow API Hi Is there any API using which I can do exactly the reverse thing that an ShowWindow method os User32.dll does I want to make a window disappear..... Any 1 can help Tag: Problem with showing/hiding forms Tag: 67315
  - 12
    - Problem between different Lang. VS.net2003? I have create a winform app, but when I open it in Traditional Chinese, the size of the buttons, panel all changed become bigger.....why is this? anyone have clue? Tag: Problem with showing/hiding forms Tag: 67308
  - 13
    - Having trouble with ShowInTaskBar property and child windows, any idea? Hi All, (I have posted similiar question ealier. Hope the other smart ones can also catch this mesage instead.) I have an windows form application that dynamically creates a lot of child windows. I want such that when the user clicks on one of the child windows, the window should goes to the front, but NOT the other windows. If I set the ShowInTaskBar property to true for all the child windows, then I get the effect (as mentioned above) that I want. But if the property is set to false. Any time I click on one of the child windows, the window goes to the top, but so DOES the other child windows! Can anyone may tell me why and give me a hint or two to resolve this issue? - JB P.S. Thanks for Iulian and other posters who gave me some sugestions in the past. Tag: Problem with showing/hiding forms Tag: 67307
  - 14
    - Auto-hide panels Do you know a control (free or cheap) that can do what we have into VS.Net IDE that has the auto-hide feature and that you can pin ? -- TIA Éric Moreau, MCSD Conseiller Principal / Senior Consultant Concept S2i inc.(www.s2i.com) Tag: Problem with showing/hiding forms Tag: 67300
  - 15
    - ToolTipText length The length of the ToolTipText in my TabPage ToolTipText does not seem to display all the text I included in the ToolTipText property. Is there a maximum length? Can this value be changed (Repeat the above quickly for yuks, but please still answer the post! Michael Tag: Problem with showing/hiding forms Tag: 67299
  - 16
    - UserControl as Items in ListBox Folks Does anyone know how to successfully use a collection (ArrayList) of UserControl as the items for a System.Windows.Forms.ListBox I am trying to make the rows in a listbox contain multiple columns, some of whic are text, some of which are images and some of which are checkboxes. The use simply needs to select the desired row I tried using a DataGrid, but am unable to get the desired look It appears to be necessary to set DrawMode to OwnerDrawFixed and the implement the DrawItem event handler. Sadly, though, the user contro never seems to display Any ideas Daniel Tag: Problem with showing/hiding forms Tag: 67296
  - 17
    - background color of columns I would like to set the background color of my datagrid to a certain color. Except for one column, that should be white. How can I do this? I have a datagridtablestyle and each column is a datagridtextboxcolumn. thanks! Eric. Tag: Problem with showing/hiding forms Tag: 67293
  - 18
    - combobox and listview I would like to do a search from a combobox and display the data on a listview Tag: Problem with showing/hiding forms Tag: 67289
  - 19
    - Unable to Debug Forms and most subroutines After months (really) of fiddling, I found out how to get debugging to work - under Debug > Exceptions, make sure Unhandled Exceptions break the code into the debugger and allow Visual Basic in the Options dialog to edit files while debugging Anyway, on to my problem...I'm creating our own manufacturing software, IC, MRP, AP, AR, you get the idea. I'm on such a tight schedule I didn't have time to learn ADO.NET, so I created an active-x control in VB 6 that exposes the DAO functions and properties. It works like this Dim msDAO as eDAO10182004.eDA msDAO = Me.DAO_ICMAIN.GetOc msDAO.DatabasePath = Unified.Settings.DataPath & "\Inventory Control.mdb msDAO.RecordsetSQL = "SELECT * FROM [tblItemsMaster] WHERE [Item Number] = '" & Me.cboItemNumber.Text & "' msDAO.OpenConnectio You would then access the data through the msDAO.Recordset property. However, when it comes to debugging...hehehehe I cannot use breakpoints or debug any form that has an Active-X control on it, whether it is mine, or one of Microsoft's (The Windows Forms Controls are okay though). Instead, I sometimes get a error message, but most of the time the program just quits without warning. It makes it hell for me because I keep having to write message boxes to figure out where in my code I am. Try...Catch statements don't even work on any subroutine that references an Active-X control. I'm at my wit's end. It takes hours a day to track down one bug. Just one I'm using VB .NET 2003 Can someone, perhaps someone from Microsoft help me? Tag: Problem with showing/hiding forms Tag: 67283
  - 20
    - Scalability of Smart Cients Hi! We want to develop a Smart Client using .NET Remoting and No Touch Deployment (loading the Assemblys directly from the Webserver except that there is no younger version). However, wie are wondering, how scalable the Smart Client is, for example, if thousand people want to download the new release on monday morning. Does anyone know, if there are limits, where you should use a web client instead? Are there any possibilities to solve this problem? Thank you, Christoph Tag: Problem with showing/hiding forms Tag: 67282
  - 21
    - Why is windows forms controls bolding so hard? Why are fonts so hard to use in .NET? All I want to do is bold the font in runtime - yet, xxx.xxx.Font.Bold is readonly. The only way I can see to bold a font for anything at run time is to change the font to a whole NEW font; i.e., for my listview subitem I have to say: lst.SubItems(6).Font = New System.Drawing.Font(lst.SubItems(6).Font, Drawing.FontStyle.Bold) Again, I don't want to change the font itself, just make it bold (or italic). Is this the only way to do it? Or am I missing an easier way? Thanks. Tom Tag: Problem with showing/hiding forms Tag: 67280
  - 22
    - Rich Text Box I'm using VB.net and SQL server 2000. I have a Windows form that has a Rich Text Box on it. I also have a Font Dialog Box that changes the font and size in the Rich Text box. When I do a normal update to the database the font info is not included. How do I save font information to a database. Thank you, E Tag: Problem with showing/hiding forms Tag: 67278
  - 23
    - FolderBrowserDialog- No Disk error Greetings lately, whenever I call the FolderBRowserDialog (Visual Basic.net 2003) and there is no media in my internal zip drive D:, I get the following eror No Dis There is no disk in the dirve. Please insert a disk into drive \Device\Harddisk1\DR1 I see this is a common error, but I do not know how to solve it in this context Thank Randy Tag: Problem with showing/hiding forms Tag: 67277
  - 24
    - Form Inheritance vs. Anchor/Dock I'm still using VS.NET 2002. I just learned what disease I'm suffering from: Form Properties Aren't Virtual Syndrome. The example that's been killing me is having controls in a base form anchor and/or dock. Then, if the derived form is a different size, one finds that these inherited controls anchor and/or dock to the size of the base form, not the size of the derived form. One notices this problem when the designers update after doing a build... I read something in this newsgroup that suggests this problem is fixed in VS.NET 2003. Is that the case? Also, is there a workaround for this in VS.NET 2002, other than not using anchor or dock in base forms? I'm about to try using anchor and/or dock in the most-derived form, which it seems might work. Is there a better way in VS.NET 2002? Thanks for any help. I'm reaching the limits of what I can do with Windows Forms without actually reading a good book on it. It's really amazing that it's possible to go so far without actually knowing what I'm doing! -- John Saunders John.Saunders at SurfControl.com Tag: Problem with showing/hiding forms Tag: 67276
  - 25
    - Showing all tooltips at once... Hi, How can I show all tooltips at the same time? I have 12 tabs, and 500 controls in a form. When the user presses 'Control' button, I want to show all the shortcuts available... How can I achieve this? Thank you, HyperX. Microsoft .NET 1.1, VS.NET 2003, WindowsForms. Tag: Problem with showing/hiding forms Tag: 67274
- Next
  - 1
    - WM_Message enumeration If anyone is interested I wrote a Quick and Dirty to extract WM_Messages from the WinUser.h file and put it into an enumertion which I use while checking messages so I an get the WM_XXXXXXX when I debug. ////////////////////////////////////////////////////////////////////////////////// using System /// <summary /// Summary description for WM_Messages /// </summary public enum WM_Message WM_NULL = 0x0000, // WM_CREATE = 0x0001, // WM_DESTROY = 0x0002, // WM_MOVE = 0x0003, // WM_SIZE = 0x0005, // WM_ACTIVATE = 0x0006, // WM_SETFOCUS = 0x0007, // WM_KILLFOCUS = 0x0008, // WM_ENABLE = 0x000A, //1 WM_SETREDRAW = 0x000B, //1 WM_SETTEXT = 0x000C, //1 WM_GETTEXT = 0x000D, //1 WM_GETTEXTLENGTH = 0x000E, //1 WM_PAINT = 0x000F, //1 WM_CLOSE = 0x0010, //1 WM_QUERYENDSESSION = 0x0011, //1 WM_QUERYOPEN = 0x0013, //1 WM_ENDSESSION = 0x0016, //2 WM_QUIT = 0x0012, //1 WM_ERASEBKGND = 0x0014, //2 WM_SYSCOLORCHANGE = 0x0015, //2 WM_SHOWWINDOW = 0x0018, //2 WM_WININICHANGE = 0x001A, //2 WM_DEVMODECHANGE = 0x001B, //2 WM_ACTIVATEAPP = 0x001C, //2 WM_FONTCHANGE = 0x001D, //2 WM_TIMECHANGE = 0x001E, //3 WM_CANCELMODE = 0x001F, //3 WM_SETCURSOR = 0x0020, //3 WM_MOUSEACTIVATE = 0x0021, //3 WM_CHILDACTIVATE = 0x0022, //3 WM_QUEUESYNC = 0x0023, //3 WM_GETMINMAXINFO = 0x0024, //3 WM_PAINTICON = 0x0026, //3 WM_ICONERASEBKGND = 0x0027, //3 WM_NEXTDLGCTL = 0x0028, //4 WM_SPOOLERSTATUS = 0x002A, //4 WM_DRAWITEM = 0x002B, //4 WM_MEASUREITEM = 0x002C, //4 WM_DELETEITEM = 0x002D, //4 WM_VKEYTOITEM = 0x002E, //4 WM_CHARTOITEM = 0x002F, //4 WM_SETFONT = 0x0030, //4 WM_GETFONT = 0x0031, //4 WM_SETHOTKEY = 0x0032, //5 WM_GETHOTKEY = 0x0033, //5 WM_QUERYDRAGICON = 0x0037, //5 WM_COMPAREITEM = 0x0039, //5 WM_GETOBJECT = 0x003D, //6 WM_COMPACTING = 0x0041, //6 WM_COMMNOTIFY = 0x0044, //68 /* no longer suported */ WM_WINDOWPOSCHANGING = 0x0046, //7 WM_WINDOWPOSCHANGED = 0x0047, //7 WM_POWER = 0x0048, //7 WM_COPYDATA = 0x004A, //7 WM_CANCELJOURNAL = 0x004B, //7 WM_NOTIFY = 0x004E, //7 WM_INPUTLANGCHANGEREQUEST = 0x0050, //8 WM_INPUTLANGCHANGE = 0x0051, //8 WM_TCARD = 0x0052, //8 WM_HELP = 0x0053, //8 WM_USERCHANGED = 0x0054, //8 WM_NOTIFYFORMAT = 0x0055, //8 WM_CONTEXTMENU = 0x007B, //12 WM_STYLECHANGING = 0x007C, //12 WM_STYLECHANGED = 0x007D, //12 WM_DISPLAYCHANGE = 0x007E, //12 WM_GETICON = 0x007F, //12 WM_SETICON = 0x0080, //12 WM_NCCREATE = 0x0081, //12 WM_NCDESTROY = 0x0082, //13 WM_NCCALCSIZE = 0x0083, //13 WM_NCHITTEST = 0x0084, //13 WM_NCPAINT = 0x0085, //13 WM_NCACTIVATE = 0x0086, //13 WM_GETDLGCODE = 0x0087, //13 WM_SYNCPAINT = 0x0088, //13 WM_NCMOUSEMOVE = 0x00A0, //16 WM_NCLBUTTONDOWN = 0x00A1, //16 WM_NCLBUTTONUP = 0x00A2, //16 WM_NCLBUTTONDBLCLK = 0x00A3, //16 WM_NCRBUTTONDOWN = 0x00A4, //16 WM_NCRBUTTONUP = 0x00A5, //16 WM_NCRBUTTONDBLCLK = 0x00A6, //16 WM_NCMBUTTONDOWN = 0x00A7, //16 WM_NCMBUTTONUP = 0x00A8, //16 WM_NCMBUTTONDBLCLK = 0x00A9, //16 WM_NCXBUTTONDOWN = 0x00AB, //17 WM_NCXBUTTONUP = 0x00AC, //17 WM_NCXBUTTONDBLCLK = 0x00AD, //17 WM_INPUT = 0x00FF, //25 WM_KEYFIRST = 0x0100, //25 WM_KEYDOWN = 0x0100, //25 WM_KEYUP = 0x0101, //25 WM_CHAR = 0x0102, //25 WM_DEADCHAR = 0x0103, //25 WM_SYSKEYDOWN = 0x0104, //26 WM_SYSKEYUP = 0x0105, //26 WM_SYSCHAR = 0x0106, //26 WM_SYSDEADCHAR = 0x0107, //26 WM_UNICHAR = 0x0109, //26 WM_KEYLAST = 0x0109, //26 WM_KEYLASTBefore0x0501 = 0x0108, //264 WM_IME_STARTCOMPOSITION = 0x010D, //269 WM_IME_ENDCOMPOSITION = 0x010E, //270 WM_IME_COMPOSITION = 0x010F, //271 WM_IME_KEYLAST = 0x010F, //271 WM_INITDIALOG = 0x0110, //272 WM_COMMAND = 0x0111, //273 WM_SYSCOMMAND = 0x0112, //274 WM_TIMER = 0x0113, //275 WM_HSCROLL = 0x0114, //276 WM_VSCROLL = 0x0115, //277 WM_INITMENU = 0x0116, //278 WM_INITMENUPOPUP = 0x0117, //279 WM_MENUSELECT = 0x011F, //287 WM_MENUCHAR = 0x0120, //288 WM_ENTERIDLE = 0x0121, //289 WM_MENURBUTTONUP = 0x0122, //290 WM_MENUDRAG = 0x0123, //291 WM_MENUGETOBJECT = 0x0124, //292 WM_UNINITMENUPOPUP = 0x0125, //293 WM_MENUCOMMAND = 0x0126, //294 WM_CHANGEUISTATE = 0x0127, //295 WM_UPDATEUISTATE = 0x0128, //296 WM_QUERYUISTATE = 0x0129, //297 WM_CTLCOLORMSGBOX = 0x0132, //306 WM_CTLCOLOREDIT = 0x0133, //307 WM_CTLCOLORLISTBOX = 0x0134, //308 WM_CTLCOLORBTN = 0x0135, //309 WM_CTLCOLORDLG = 0x0136, //310 WM_CTLCOLORSCROLLBAR = 0x0137, //311 WM_CTLCOLORSTATIC = 0x0138, //312 WM_MOUSEFIRST = 0x0200, //512 WM_MOUSEMOVE = 0x0200, //512 WM_LBUTTONDOWN = 0x0201, //513 WM_LBUTTONUP = 0x0202, //514 WM_LBUTTONDBLCLK = 0x0203, //515 WM_RBUTTONDOWN = 0x0204, //516 WM_RBUTTONUP = 0x0205, //517 WM_RBUTTONDBLCLK = 0x0206, //518 WM_MBUTTONDOWN = 0x0207, //519 WM_MBUTTONUP = 0x0208, //520 WM_MBUTTONDBLCLK = 0x0209, //521 WM_MOUSEWHEEL = 0x020A, //522 WM_XBUTTONDOWN = 0x020B, //523 WM_XBUTTONUP = 0x020C, //524 WM_XBUTTONDBLCLK = 0x020D, //525 WM_MOUSELAST = 0x020D, //525 WM_MOUSELASTBefore0x0500 = 0x020A, //522 WM_MOUSELASTBefore0x0400 = 0x0209, //521 WM_PARENTNOTIFY = 0x0210, //528 WM_ENTERMENULOOP = 0x0211, //529 WM_EXITMENULOOP = 0x0212, //530 WM_NEXTMENU = 0x0213, //531 WM_SIZING = 0x0214, //532 WM_CAPTURECHANGED = 0x0215, //533 WM_MOVING = 0x0216, //534 WM_POWERBROADCAST = 0x0218, //536 WM_DEVICECHANGE = 0x0219, //537 WM_MDICREATE = 0x0220, //544 WM_MDIDESTROY = 0x0221, //545 WM_MDIACTIVATE = 0x0222, //546 WM_MDIRESTORE = 0x0223, //547 WM_MDINEXT = 0x0224, //548 WM_MDIMAXIMIZE = 0x0225, //549 WM_MDITILE = 0x0226, //550 WM_MDICASCADE = 0x0227, //551 WM_MDIICONARRANGE = 0x0228, //552 WM_MDIGETACTIVE = 0x0229, //553 WM_MDISETMENU = 0x0230, //560 WM_ENTERSIZEMOVE = 0x0231, //561 WM_EXITSIZEMOVE = 0x0232, //562 WM_DROPFILES = 0x0233, //563 WM_MDIREFRESHMENU = 0x0234, //564 WM_IME_SETCONTEXT = 0x0281, //641 WM_IME_NOTIFY = 0x0282, //642 WM_IME_CONTROL = 0x0283, //643 WM_IME_COMPOSITIONFULL = 0x0284, //644 WM_IME_SELECT = 0x0285, //645 WM_IME_CHAR = 0x0286, //646 WM_IME_REQUEST = 0x0288, //648 WM_IME_KEYDOWN = 0x0290, //656 WM_IME_KEYUP = 0x0291, //657 WM_MOUSEHOVER = 0x02A1, //673 WM_MOUSELEAVE = 0x02A3, //675 WM_NCMOUSEHOVER = 0x02A0, //672 WM_NCMOUSELEAVE = 0x02A2, //674 WM_WTSSESSION_CHANGE = 0x02B1, //689 WM_TABLET_FIRST = 0x02c0, //704 WM_TABLET_LAST = 0x02df, //735 WM_CUT = 0x0300, //768 WM_COPY = 0x0301, //769 WM_PASTE = 0x0302, //770 WM_CLEAR = 0x0303, //771 WM_UNDO = 0x0304, //772 WM_RENDERFORMAT = 0x0305, //773 WM_RENDERALLFORMATS = 0x0306, //774 WM_DESTROYCLIPBOARD = 0x0307, //775 WM_DRAWCLIPBOARD = 0x0308, //776 WM_PAINTCLIPBOARD = 0x0309, //777 WM_VSCROLLCLIPBOARD = 0x030A, //778 WM_SIZECLIPBOARD = 0x030B, //779 WM_ASKCBFORMATNAME = 0x030C, //780 WM_CHANGECBCHAIN = 0x030D, //781 WM_HSCROLLCLIPBOARD = 0x030E, //782 WM_QUERYNEWPALETTE = 0x030F, //783 WM_PALETTEISCHANGING = 0x0310, //784 WM_PALETTECHANGED = 0x0311, //785 WM_HOTKEY = 0x0312, //786 WM_PRINT = 0x0317, //791 WM_PRINTCLIENT = 0x0318, //792 WM_APPCOMMAND = 0x0319, //793 WM_THEMECHANGED = 0x031A, //794 WM_HANDHELDFIRST = 0x0358, //856 WM_HANDHELDLAST = 0x035F, //863 WM_AFXFIRST = 0x0360, //864 WM_AFXLAST = 0x037F, //895 WM_PENWINFIRST = 0x0380, //896 WM_PENWINLAST = 0x038F, //911 WM_APP = 0x8000, //32768 WM_USER = 0x0400, //1024 WM_HELP_Before0x0400 = 0x000c, //12 } Tag: Problem with showing/hiding forms Tag: 67273
  - 2
    - Adding a Button Control to a ListView/DataGrid Column Hi All, Is it possible to add other controls to the ListView control in C# windows forms. i.e. I want to add a button column so to speak to the list view. You can do this sort of thing with the datagrid in asp.net, however I think the datagrid in c# is overly complex for what I'm wanting to do, and I'm not even sure it is possible to do it in that. Answers to both Controls would be appreciated. Thanks Alan Tag: Problem with showing/hiding forms Tag: 67270
  - 3
    - No Touch deployment Are there any good articles out there on no touch deployment and how easy is this to setup? Also a friend of mine told me about Microsoft Update block I believe which is a more low level version of No Touch what are the differences? Tag: Problem with showing/hiding forms Tag: 67262
  - 4
    - PropertyGrid -- controlling the Category Text Color Is there a way to control the color of the text that appears in the Category headings area of the property grid. I assume that it is tied to a system color -- the text is hard to read with the "dark-gray" color that ends up being the default under standard XP settings. The "LineColor" property provides control of the background color of the category heading -- but I don't see an obvious way to control the text color. Thanks, Rob. Tag: Problem with showing/hiding forms Tag: 67260
  - 5
    - Form Properites Hello, Is there a possibility to write a properties (or method) to class derived from Form to make a some changes in InitializeComponent() for ALL child: for example add MYFUNCTION to retrieve item Name? this.button1.Location = new System.Drawing.Point(120, 91); this.button1.Name = MYFUNCTION("button1"); .... this.ctlTab.Name = MYFUNCTION("MyControlTab"); (something like globalization) Manually changes are not acceptable by designer. Thanx for help P. Tag: Problem with showing/hiding forms Tag: 67256
  - 6
    - Q:) Need sample code for a best practices Windows Form app Is there anything like Petshop or Duwamish but more of a regular client/server windows forms based app that demonstrates good Window Forms coding practices? Or something that just demonstrates the right way to bind controls to data for a c/s app? My .Net experience is mostly web app based so I'm used to opening datasets and going back to refetch records on subsequent server roundtrips, etc. I'm not sure about the best way to work with data sets and bound controls on a client/server type of app where I can be fully coupled to the database. I used to work with Delphi which had components for persistent database connections and table objects that you opened once, wired your grids and edit boxes up to, and did all of your updates through. I know .net can do that but everything seems oriented towards disconnected apps. Then again, maybe thats the better way, either way - some pointers would be helpful... Thanks bill wiw at nyc . rr com Tag: Problem with showing/hiding forms Tag: 67254
  - 7
    - Office 2003 Style Menu/VS.Net 2003 Style Menus Hello, Is there anyway to get the menu's to appear like Office 2003 or VS.Net 2003 in .Net? I was using Application.EnableVisualStyles() but this works for textbox and buttons if the FlatStyle is System but the menus are still in the old plain format. Thanks Tag: Problem with showing/hiding forms Tag: 67252
  - 8
    - Set Hidden (Key) Fields on RowChange I am using C# WinForms with a DataGrid bound to a strongly typed dataset I am not displaying key fields and logging fields (Create DT, Create By, etc.) in the datagrid When a New Row is modified, I want to set the key and hidden fields in code. Basically, when the user moves off of a row, I want to check if the RowState == Added, and all necessary values are entered, and if so, then set hidden fields I have tried the Row_Changing event and the Row_Changed event. The Row_Changed event is to late because I get an error stating the key field can not be null. The Row_Changing event stated that I could not change a proposed value in the rowChanging event What is the best way to set hidden columns on a row after the user has entered values in the visible columns Here is the code that does not work private static void Row_Changing( object sender, DataRowChangeEventArgs e dsLD.LineDtlRow r = (dsLD.LineDtlRow)e.Row MessageBox.Show("In Row_Changed: " + r.RowState.ToString()) if (r.RowState == DataRowState.Added && r.GroupCD != null r.ClaimID = 1 MessageBox.Show("Set Hidden Fields") Thanks Larry Tag: Problem with showing/hiding forms Tag: 67251
  - 9
    - Disabling Forms Redrawing Hello. I have a problem. I have a control and I want to try if a specific value of one property can be setted, without catching exception. So I set the value and then I restore the previuos value. Anyone know how to prevent that the control redraw between this two operations, to prevent image flickering? Tag: Problem with showing/hiding forms Tag: 67250
  - 10
    - DateTime truncation I want to compare two DateTime values but only down to seconds, so how do I truncate DateTime values to second granularity ? Similarly, I may want to truncate to the minute granularity. I also may want to round to the nearest minute. How do I do these things ? I'm sure it must be really simple but I cant find anything in the DateTime class. I know I can convert to a numeric date and time format and do a string compare but I imagine this is a very inefficient way to do it. Tag: Problem with showing/hiding forms Tag: 67249
  - 11
    - use MFC Controls in WinForms? Hi there, is there a possibility to host MFC controls in a SWF Control? I have a big MFC application and want to migrate to .NET. It is not possible for me to rewrite all the MFC controls and views so I want to create a new .NET based frame and use the old MFC controlbars and editors. Is there a way (e.g. with subclassing / superclassing) to create a managed wrapper around my old MFC CWnd and CVeiw derived classes? I know that I could create ActiveX controls around them and use a RCW but that would cause a lot of additional overhead. There are some atricles saying that Whidbey bring support for hosting SWF Controls in MFC. Is that also true for the oposite (MFC Controls in SWF)? Thanks in advance Thomas Tag: Problem with showing/hiding forms Tag: 67248
  - 12
    - Custom StringArrayEditor Hi, I want to edit a property (type=string[]) in the propertygrid. Usually you use StringArrayEditor. But I'd like to change the instruction displayed in the StringCollectionForm and the text of the form. Unfortunaltely, StringArrayEditor is internal, so I can't inherit. I tried to inherit from CollectionEditor and then provide StringCollectionForm (see hereafter). So I can change the instruction and text (thanks to reflection). But if I change the collection (add a string, I get an 'object reference not set to...' outside of my code. Do you see a better way to do it? What's wrong? I know I can create my own MyStringCollectionForm, but I don't want to do that. Any idea? Sebastien public class TheObject{ [Editor(typeof(OutputArrayEditor), typeof(UITypeEditor))] public string[] TheProperty{ ... } } public class OutputArrayEditor : CollectionEditor //ideal would be StringArrayEditor { public OutputArrayEditor(Type type) : base (type){} protected override System.ComponentModel.Design.CollectionEditor.CollectionForm CreateCollectionForm() { Type editorType = Type.GetType("System.Windows.Forms.Design.StringArrayEditor, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"); object editor = editorType.InvokeMember(null, BindingFlags.CreateInstance, null, null, new object[]{typeof(string[])}); Form form = (Form)editorType.InvokeMember("CreateCollectionForm", BindingFlags.NonPublic | BindingFlags.InvokeMethod | BindingFlags.Instance, null, editor, null); form.Text = "My Custom collection text"; //add code to chg instruction here (reflection) return (CollectionEditor.CollectionForm)form;//base.CreateCollectionForm (); } protected override object SetItems(object editValue, object[] value) { return base.SetItems (editValue, value); } protected override object[] GetItems(object editValue) { return base.GetItems (editValue); } } Tag: Problem with showing/hiding forms Tag: 67239
  - 13
    - Datagrid with Custom Columns - design time support? Hello, I have created a custom column for a datagrid and if I manually modify the code it all works fine. However, when I click on properties, etc., from the design time environment the custom column is never displayed. Nor can I add a column of the custom type... I have found several references/examples in C# which demonstrate what to do, but my conversions don't seem to work. Does someone have an example of creating a custom datagrid which will support custom columns in the design time environment in a windows.forms VB.NET 2003 application? Thanks! Jim Tag: Problem with showing/hiding forms Tag: 67238
  - 14
    - Closing messagebox? 2nd posting ... How do I force messagebox to close after OK button click? I don't explicity 'close' the dialog. Maybe I should somehow? See code below, where I do some database work after OK click ...in this case, msgbox is displayed for several minutes. Is there a DoEvents or something which can be applied? Thanks for your help! Graeme myResult = MessageBox.Show("Are you sure you want to update ODRC lives and costs? This process updates the assets database table and can take several minutes.", "Update ODRC?", MessageBoxButtons.YesNo, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1) If myResult = DialogResult.No Then gbxODRCRequirements.Visible = False : Exit Sub If myAssetType = "Equipment" Then RecalcODRC() ElseIf myAssetType = "Structures" Then RecalcPoleODRC() End If ...and so on. Tag: Problem with showing/hiding forms Tag: 67237
  - 15
    - Cursor and splitter. How can I supress cursor "MoveTo" on splitter? This cursor appears when I move mouse over splitter. I would like to show different cursors by myself. How can I do it? Tag: Problem with showing/hiding forms Tag: 67231
  - 16
    - DateTimePicker i am using a custom format in the datetime picker The cursor does not move to the next position automatically ie.day or year after the Month is keyed in.The user has to click the right arrow to move to the day or year.i want the datetimePicker to be a free form for eg: my format is 'MMddyyyy HH:mm tt'. I want the cursor to automove to 'dd' after the user keys in 'MM'.This is not happening in Datetime picket in .net Can anybody help me out?Any ideas how to do this. Tag: Problem with showing/hiding forms Tag: 67230
  - 17
    - IE 6.0 Exception 0xc0000005 in mshtml.dll In a ASP.NET enterprise application under development. Consistantly, when navigating using the browser Back navigation button between two web forms, receive Internet Explorer crash. AppName: iexplorer.exe AppVer: 6.0.2800.1106 ModName:mshtml.dll ModVer: 6.0.2800.1276 Offset: 000c698e Exception Information Code: 0xc0000005 Scenario: Webform A is 'no-cache' and does a Server-Transfer to Webform B. Use IE Back button (back to Webform A)causes exception. Repeat with Webform A now being cached (i.e 'no-cache' removed) and the IE Back button works fine. I'm using Visual Studio 1.1, C#, in Debug mode. Q. Any ideas how to trouble shoot something like this? Thanks... Tag: Problem with showing/hiding forms Tag: 67228
  - 18
    - component Hi I'm a new one on .NET development, I used VB6. In VB6, we can create component(COM) to expose some features to other applications. Is there a way to do same thing in .NET? Is the widows service or web service same as COM Thanks Tag: Problem with showing/hiding forms Tag: 67225
  - 19
    - Instantiate a form I am loading a form in this method. I have an accessor that is called Loginstatus within the frmMainForm. When I Instantiate the frmMainForm I want to disable the File Menu if the Loginstatus is false. In VB6 I would do something like this frmMainForm auth = new frmMainForm() auth.Loginstatus = fals However, in C# when I execute frmMainForm auth = new frmMainForm(); the InitializeComponent routine is triggered. I understand that you are not suppose to edit this code? If thats the case then where is the best place to check for the Loginstatus value to see whether the File menu should be enabled or not. Currently I have this checking the Load event of the form Tag: Problem with showing/hiding forms Tag: 67215
  - 20
    - textboxes in user control: change event fired twice if only 1 char Hello Strange behaviour: I have several textboxes in a user control that fire change events. This event is fired for every character I enter and the control's "Text" property is updated correctly. But if I enter only 1 character and set the focus to a control outside the user control that contains the textbox, another change event is being fired. Additionaly, the "Text" property is set to the original value (without the entered character). If I enter 2 characters or set the focus to a control within the containing user control, everything is fine. Thanks for your advice Philipp Tag: Problem with showing/hiding forms Tag: 67213
  - 21
    - winform in asp.net I am trying to do rich-client code hosted in Internet Explorer, formally referred to as ActiveX. I have a couple of examples for embedding a .net winform on an asp.net page. However, I seem unable to make any of these examples to work. The control just does not render, and I donâ??t get any errors Does anyone know of a â??Hello Worldâ?? example of embedding a Winform in aspx Thanks Tag: Problem with showing/hiding forms Tag: 67211
  - 22
    - RichTextBox Speed I am building an IRC client in C#. I am having trouble displaying the messages in a quick and efficient manner. I need to format the messages (font size, font color, etc) as they arrive from the server Everything I have read says to use the RichTextBox. The problem is that the RichTextBox is too slow. It flickers and the text scrolls much too slow. I have tried various "hacks" to get rid of the flicker and speed up the update, but nothing seems to work. The various methods I have tried include preventing the control from redrawing itself by calling the WM_SETREDRAW method Is there any way to "speed up" the RichTextBox? Can I create a control that inherits from the RichTextBox class and somehow make it update faster? For that matter, can I create a control that inherits from the TextBox class and make it support text formatting Here is the code I am using right now to add formatted text to the RichTextBox control (the slow code) textMessage.SuspendLayout() textMessage.Select(vAdvRichTextBox.Text.Length, 0) textMessage.SelectedText = vText textMessage.Select(vAdvRichTextBox.Text.Length - vText.Length + 1, vText.Length) textMessage.SelectionColor = vForeColor textMessage.SelectionFont = vFont textMessage.ResumeLayout(true) textMessage.SelectionStart = vAdvRichTextBox.Text.Length textMessage.SelectionLength = 0 textMessage.ScrollToCaret() Any ideas Phil Tag: Problem with showing/hiding forms Tag: 67210
  - 23
    - .net ExecuteReader I have a loop that calls a function. The function contains a sql connection and a reader. This code works perfectly in windows xp/2000. But on windows 98/ME machines, it runs the first iteration of the loop, then hangs the thread on the second iteration. Any Ideas? The connection is closed on each loop, etc Dim rcmd As New System.Data.SqlClient.SqlCommand(mySQL, rconn Dim rs As System.Data.SqlClient.SqlDataReade 'PreHan rs = rcmd.ExecuteReader( 'post Hang Tag: Problem with showing/hiding forms Tag: 67209
  - 24
    - MonthCalendar DateChanged event firing every 2 minutes. The MonthCalendar DateChanged event is firing every 2 minutes in my application. I cannot find anything that would cause this and the date is not changing. I put breakpoints on anything else that might affect the date in my code, but the code does not stop there Anybody know why this might happen? Tag: Problem with showing/hiding forms Tag: 67205
  - 25
    - Reflection Interface Hi, I'm trying to instantiate a class from a precompiled assembly .dll and cast it into a known Interface typ // Load the assembl Assembly externalAssembly = Assembly.LoadFrom("some.dll") // Create The typ Type externalType = externalAssembly.GetType("My.Created.UserClass") //Create the objec IView exView = (IView) Activator.CreateInstance(externalType) My.Created.UserClass is the fully qualified name for the class, and it extends UserControl and implements IView interface in which I created. I was able to compile this fine but when I get "Specified Cast Not Valid" error in runtime I need to do this because I have to run a Configure() method which is a member of the IView interface. I know I can make a MethodInfo and assign Configure to it, but I really dont want to because of design requirements. A weird thing I noticed is that the code runs if I instead cast the Activator.CreateInstance(..) into a UserControl Object Thank you Rizka Armadhan Tag: Problem with showing/hiding forms Tag: 67204

I'm trying to convert my VB6 app to VB.NET and having loads of difficulty getting some forms to show correctly. I have seen similiar type of posts as mine, but nothing has worked for me

I have an MDI container form(frmICD) and a Sub Main where the app first starts up. When I first run the app, frmlogon gets called from Sub Main to get the username and password. Once the user hits ok, code in frmlogon gets the next form (frmmainmenu) ready. I have verified via debugger that frmmainmenu is visible. I call frmlogon.hide, the app returns to the Sub Main and the program terminates. Is there a reason this is happening or What am I missing
I tried to add this line of code in frmlogon: 'System.Windows.Forms.Application.Run(New frmMainMenu)' but I receive this error message: 'It is invalid to start a second message loop on a single thread'. I'm assuming I get this because frmmainmenu is already visible? I don't know. If anyone can help or can tell me somewhere that has good examples of working with MDI forms and childs, it would be greatly appreciated
Joe

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