The information in this article applies to:
SYMPTOMSThe Windows 95 common controls can be used under Win32s version 1.3 and Windows NT version 3.51. However, these controls will not appear in 3D if 3D controls are enabled under Windows NT version 3.51 and Win32s version 1.3. These controls will show up in 3D if 3D controls are enabled under Windows 95 only. CAUSEThe 3D look of standard controls under Windows NT 3.51 and Win32s version 1.3 is provided by Ctl3d32.dll. Ctl3d32.dll does not support 3D effects for any of the Windows 95 common controls. These controls show up as 3D under Windows 95 because the drawing for these controls is handled by User32.dll under Windows 95. RESOLUTION
To give Windows 95 common controls a 3D look under Windows NT 3.51 and
Win32s version 1.3 in an MFC application, perform these steps:
NOTE: If you plan to use this approach, you need to have the proper version of Ctl3d32.dll on your system. This DLL should reside in the <Windows NT Dir>\System32 directory for 32-bit systems or in the <Windows Dir>\System directory for 16-bit systems using Win32s. The version of the DLL you must use is 2.29.00 or later. STATUSThis behavior is by design. MORE INFORMATIONCalling 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: Progress ControlCalling 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:
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
REFERENCESFor more information, please see the article "Adding 3-D Effects to Controls" by Wes Cherry and Kyle Marsh. This article can be found on the MSDN July 1995 compact disc in the following place:
This article discusses the implementation of earlier versions of
Ctl3d32.dll.
Additional query words: 2.20 3.2 3.20 4.00
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