DM_SETDEFID

An application sends a DM_SETDEFID message to change the identifier of the default push button for a dialog box.

DM_SETDEFID 
wParam = idControl; // identifier of new default push button 
 

Parameters

idControl

Value of wParam. Specifies the identifier of a push button control that will become the default.

Remarks

This message is processed by the DefDlgProc function. To set the default push button, the function can send WM_GETDLGCODE and BM_SETSTYLE messages to the given control and the current default push button.

Using the DM_SETDEFID message can result in more than one button appearing to have the default push button state. When the system brings up a dialog, it draws the first push button in the dialog template with the default state border. Sending a DM_SETDEFID message to change the default button will not always remove the default state border from the first push button. In these cases, the application should send a BM_SETSTYLE message to change the first push button border style.

Return Values

The return value is always TRUE.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 1.0 or later.
  Header: Declared in winuser.h.

See Also

Dialog Boxes Overview, Dialog Box Messages, BM_SETSTYLE, DefDlgProc, DM_GETDEFID, EM_SETLIMITTEXT, WM_GETDLGCODE