BUG: BLOCKS32 Sample Fails to Show Cursors when Linked to MFC

• Microsoft Visual C++, 32-bit Editions, versions 5.0, 6.0

SYMPTOMS

Usually when you move the mouse over a rectangle or ellipse which is inserted into the BLOCKS32 sample, it shows different cursors depending on the position of mouse.

However, if you compile the BLOCKS32 sample with Use MFC in a Static Library option, the different cursors do not appear when moving the mouse over a rectangle or ellipse.

CAUSE

When an application is linked to MFC using the static library, the MFC resources are compiled into an application's executable. The application's executable will include the Afxres.rc file. You can check this by selecting the View menu and Resource Includes menu. The Afxres.rc file has the resources that CRectTracker uses in the MFC source code.


These resources are included only when _AFX_NO_TRACKER_RESOURCES is not defined. The BLOCKS32 project has _AFX_NO_TRACKER_RESOURCES defined, so it does not place the resources that CRectTracker needs into the application's executable image. Therefore, none of the cursors used by CRectTracker will show up when building the sample using MFC statically.

RESOLUTION

Select the View menu and Resource Includes menu item and delete the following line:

   #define _AFX_NO_TRACKER_RESOURCES  

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

MORE INFORMATION

Steps to Reproduce Behavior

1. Extract Blocks32.exe sample from Microsoft Developer's Network (MSDN)



2. From the Project menu select Settings



3. Change "Use MFC in a Shared DLL" to "Use MFC in a Static Library"



4. Build the application and run it



5. From the New menu select Rectangle.



6. Move the cursor into the rectangle and cursor disappears.

Additional query words: kbDSupport Sample Static Dynamic Resources kbMFC kbSample

Keywords : kbCOMt kbCursor kbMFC kbVC kbVC500 kbVC600 kbDSupport kbGrpMFCATL
Version : winnt:5.0,6.0
Platform : winnt
Issue type : kbbug