SAMPLE: Raising Text Size Limit for Edit Controls

 Last reviewed: July 23, 1997
Article ID: Q77287
3.00 3.10 WINDOWS kbprg kbfile

The information in this article applies to:

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

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.

GLBEDIT is a code sample in the Microsoft Software Library that demonstrates how an edit control can have its own data segment.

Download GLBEDIT.EXE, a self-extracting file, from the Microsoft Software Library (MSL) on the following services:

  • Microsoft Download Service (MSDL) 

          Dial (206) 936-6735 to connect to MSDL
      Download GLBEDIT.EXE (size: 21432 bytes)
  • Internet (anonymous FTP) 

          ftp ftp.microsoft.com
      Change to the \SOFTLIB\MSLFILES directory
      Get GLBEDIT.EXE (size: 21432 bytes)

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 reference words: 3.00 3.10 softlib GLBEDIT.EXE
KBCategory: kbprg kbfile
KBSubcategory: UsrCtl
Keywords : kb16bitonly UsrCtl kbfile kbprg
Version : 3.00 3.10
Platform : WINDOWS

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Last reviewed: July 23, 1997
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