PRB: CStatic::SetBitmap Doesn't Display Bitmap on Win NT 3.51

The information in this article applies to:

• The Microsoft Foundation Classes, included with: Microsoft Visual C++ for Windows, versions 4.0, 4.1

SYMPTOMS

CStatic::SetBitmap() does not display the bitmap correctly on a picture control in Windows NT 3.51 if the picture control is subclassed.

This problem is restricted to Windows NT 3.51 and does not appear on Windows 95.

RESOLUTION

Do not subclass the picture control either directly, by using SubClassWindow() or SubClassDlgItem(), or indirectly, by associating a CStatic control variable with it. Instead, call SetBitmap() using a pointer to the picture holder obtained by calling GetDlgItem()

STATUS

This behavior is by design.

MORE INFORMATION

Embed a picture control on a dialog, form view, or property page using the resource editor, and associate it with a bitmap type. Change the ID from IDC_STATIC to something else. Associating the picture control with a bitmap ID is optional. Using Class Wizard, associate a CStatic control variable with this picture control. Note that when you try to display a bitmap or change the old bitmap on the picture holder using CStatic::SetBitmap(), the new bitmap is not displayed.

Sample Code

   // IDC_PICHOLD is the picture holder's ID
   ((CStatic*)GetDlgItem(IDC_PICHOLD))->SetBitmap(/* handle to bitmap */);