PRB: Sending a WM_GETTEXT Does Not Return a String for Non-Text Static Controls

• Microsoft Win32 Software Development Kit (SDK), on platform(s):
  • Microsoft Windows 2000

SYMPTOMS

BETA INFORMATION BETA INFORMATION BETA INFORMATION

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BETA INFORMATION BETA INFORMATION BETA INFORMATION

Sending a WM_GETTEXT message to a non-text static control, such as a static bitmap or static icon control, does not return a string value.

CAUSE

The behavior of non-text-mode static controls (for example, SS_BITMAP, SS_ICON, and so forth, styles are set) was changed in Windows 2000 so that WM_GETTEXT does not return a string. In addition, WM_GETTEXTLENGTH also returns zero for these types of controls.

STATUS

This behavior is by design.

MORE INFORMATION

In earlier versions of Windows and Windows NT, applications send a WM_GETTEXT message to a non-text static control to retrieve the control's ID.

Applications can use GetWindowLong, passing GWL_ID as the index value, or GetWindowLongPtr, using GWLP_ID to retrieve a control's ID.

Additional query words: WM_GETTEXT WM_GETTEXTLENGTH GetWindowText GetWindowTextLength static control

Keywords : kbWinOS2000 kbSDKPlatform kbStaticCtrl kbGrpUser
Version : WINDOWS:
Platform : WINDOWS
Issue type : kbprb