PRB: Windows 95 Common Controls Not Supported by Ctl3d32.dll

MORE INFORMATION

Calling Enable3dControls in your override of CWinApp::InitInstance will load and initialize Ctl3d32.dll. If you call the CWnd member function Subclass3dCtl and pass a parameter of 1 for the following controls, they will appear with a 3D looking border around them in your application: Calling Subclass3dCtl will call the Ctl3d32.dll function Ctl3dSubclassCtlEx and pass it the HWND of your control and the value of 1 for the ControlID. The valid control IDs that can be used with Ctl3d32.dll are listed in the header file Ctl3d.h under the heading:

   /* Ctl3d Control ID*/ 
				

The value 1 corresponds to a list box control, so actually what you are telling Ctl3d32.dll is that you are subclassing a list box control. Because the DLL only handles the painting of the border of the control, this method should work with the previously listed controls.

Please note that this is a workaround to the problem that Ctl3d32.dll does not support Winodws 95 common controls, it is not a limitation of the Win32s or the Windows NT 3.51 operating systems because they are not inherently 3D. (Any 3D support found in these operating systems is provided by another support such as Ctl3d32.dll.) Ctl3d32.dll is designed to give a 3D look only to the controls listed in the /* Ctl3d Control ID*/ section of Ctl3d.h. If you choose to use this workaround, you should test your programs thoroughly. Furthermore, there is no guarantee that Ctl3d32.dll would support this capability in future releases.

Sample Code

// This code shows how to give Windows 95 common controls a 3D look
// in an MFC application.

// Initialize Ctl3d32.dll as shown below. A default
// AppWizard-generated application will already have this code:

CMyApp::InitInstance()
{
  Enable3dControls();
  ...
}

// If you have a member variable associated with the control,
// use code similar to the following in your OnInitDialog or your
// OnInitialUpdate function.

   m_Progress.SubclassCtl3d(1);

// If you do not have a variable associated with the control,
// then you can use GetDlgItem to obtain one, for example:

   GetDlgItem(IDC_PROGRESS1)->SubclassCtl3d(1);
				

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