How To Use CTL3D.DLL in Your Visual Basic Program

You can use CTL3D.DLL to add three-dimensional (3-D) effects to the common dialog boxes and message boxes for a Visual Basic application. However, CTL3D.DLL does not work currently for the controls on a Visual Basic form or for the form itself.

To get 3-D effects for the controls on a form, use the controls found in the THREED.VBX custom control.

To use CTL3D.DLL to enhance the common dialog boxes and message boxes from Visual Basic, follow these steps:

1. Start a new project in Visual Basic. Form1 is created by default.
2. Add the following code to the form's general declarations section:

      Option Explicit
      Const GWW_HINSTANCE = (-6)
   
      ' Enter each declaration as one, single line:
   
      Declare Function GetWindowWord Lib "User" (ByVal hWnd As Integer, ByVal
         nIndex As Integer) As Integer
      Declare Function Ctl3dAutoSubclass Lib "Ctl3D.DLL" (ByVal hInst As
         Integer) As Integer
      Declare Function Ctl3dRegister Lib "Ctl3D.DLL" (ByVal hInst As Integer)
         As Integer
      Declare Function Ctl3dUnregister Lib "Ctl3D.DLL" (ByVal hInst As
         Integer) As Integer
   
   					

3. Add the following code to the form's load event procedure:

      Sub Form_Load ()
        Dim hInst As Integer, ret As Integer
   
        hInst = GetWindowWord(Me.hWnd, GWW_HINSTANCE) ' Get Instance Handle
        ret = Ctl3dRegister(hInst)            ' Register program w/ Ctl3d.
        ret = Ctl3dAutoSubclass(hInst)        ' Subclass the program.
      End Sub
   
   					

4. Add the following code to the form's unload event procedure:

      Sub Form_Unload (Cancel As Integer)
        Dim hInst As Integer, ret As Integer
   
        hInst = GetWindowWord(Me.hWnd, GWW_HINSTANCE) ' Get Instance Handle
        ret = Ctl3dUnregister(hInst)          ' Unregister the program.
      End Sub
   
   					

5. Add a command button (Command1) to the form.
6. In the Click event for Command1, add a MsgBox statement:

      Sub Command2_Click ()
         MsgBox "This is a 3-D Message Box"
      End Sub
   
   					

7. Press the F5 key to run the program. When you click the command button, a message box will appear in 3-D.

Important Note

If your program fails to unregister itself from CTL3D.DLL when your program ends, you may cause Windows to crash (stop operating). For example, if you place the Ctl3dUnregister() function in the Unload event and your program uses the End statement, Windows may crash because the End statement does not invoke the QueryUnload or Unload event.

The information in this article is taken from the CTL3D.HLP help file.

The following file is available for download from the Microsoft Download Center:
For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base: Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file. For additional information, please see the following article in the Microsoft Knowledge Base: