SAMPLE: GlbEdit.exe Raises Text Size Limit for Edit Controls

ID: Q77287

The information in this article applies to:

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

SUMMARY

GlbEdit.exe is a sample file in that demonstrates how an edit control can have its own data segment. By default, the buffer for an edit controls is allocated from the application's data segment. Because the data segment is also used to store information for other controls, space in the data segment is a scarce resource.

MORE INFORMATION

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

 ~ GlbEdit.exe (size: 21432 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

Normally, edit controls in a dialog box use one common global data segment per dialog box. If the dialog box has style DS_LOCALEDIT, edit controls use the data segment pointed to by the hInstance used to create the dialog box. Edit controls created with CreateWindow() use the data segment pointed to by hInstance.

The GLBEDIT sample shows how to change hInstance to point to a new global object. Multiple controls of any type can use the same memory object.

To find the effected portions of the code, search for WM_CREATE in the MainWndProc.

Additional query words: Keywords : kb16bitonly kbCtrl kbSDKPlatform kbGrpUser

Last Reviewed: January 3, 1999