HOWTO: Use CTL3D.DLL in Your Visual Basic Program

ID: Q113898

The information in this article applies to:

Microsoft Visual Basic Standard and Professional Editions for Windows, versions 2.0, 3.0

SUMMARY

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.

MORE INFORMATION

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

Start a new project in Visual Basic. Form1 is created by default.

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

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

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

Add a command button (Command1) to the form.

In the Click event for Command1, add a MsgBox statement:


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

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.

REFERENCES

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

You can find CTL3D.EXE, a self-extracting file, on these services:

The following file is available for download from the Microsoft Software Library:

~ Ctl3d.exe

For more information about downloading files from the Microsoft Software Library, please see the following article in the Microsoft Knowledge Base:

Q119591 : How to Obtain Microsoft Support Files from Online Services

For additional information, please see the following article in the Microsoft Knowledge Base:

Q97361 : INF: Adding 3D Controls Using CTL3D.DLL

Additional query words: 3.00 softlib kbDSupport

Keywords : kbcode
Version : 2.00 3.00
Platform : WINDOWS
Issue type :