SAMPLE: SuperMDI.exe Demos Superclassing MDI Client Window

ID: Q84979

The information in this article applies to:

Microsoft Windows Software Development Kit (SDK) for Windows versions 3.0, 3.1

SUMMARY

SuperMDI.exe is a sample that demonstrates superclassing an MDI client window to change its behavior. An application can use superclassing to add new styles and functionality to a multiple document interface (MDI) client window.

MORE INFORMATION

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

 ~ SuperMDI.exe (size: 26853 bytes)

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

   ARTICLE-ID: Q119591
   TITLE     : How to Obtain Microsoft Support Files from Online Services

Under a variety of circumstances an application might be designed to change the predefined behavior of an MDI client window. Superclassing provides the easiest and cleanest method to change window styles or to handle messages in a unique manner.

By default, an MDI client window cannot accept mouse button double-clicks. If an application superclasses the client window, the application can change the window style of the client window and have it accept double- clicks. An application can also use this method to change the MDI client window background color.

The SuperMDI sample application demonstrates how to change the color of the MDI client window and enable the MDI client to respond to mouse button double-clicks.

Additional query words: Keywords : kbfile kbsample kbMDI kbGrpUser kbWndw

Last Reviewed: December 26, 1998