Requests a size and screen position for an appbar. When the request is made, the message proposes a screen edge and a bounding rectangle for the appbar. The system adjusts the bounding rectangle so that the appbar does not interfere with the Windows taskbar or any other appbars.
A pointer to an APPBARDATA structure. The uEdge member specifies a screen edge, and the rc member contains the proposed bounding rectangle. When the SHAppBarMessage function returns, rc contains the approved bounding rectangle. You must specify the cbSize, hWnd, uEdge, and rc members when sending this message; all other members are ignored.
Always returns TRUE.
An appbar should send this message before sending the ABM_SETPOS message.
Minimum supported client
|Windows XP [desktop apps only]|
Minimum supported server
|Windows 2000 Server [desktop apps only]|