?
Siehe :
http://www.experts-exchange.com/Programming/Programming_Languages/MFC/Q_10021837.html
Comment from cnasarre Date: 09/03/1997 08:03AM PDT
Take a look at your RC file and check that the dialog definition is done without WS_CAPTION style. Here is my own :
IDD_DLGNOTITLE_DIALOG DIALOGEX 0, 0, 185, 92
STYLE DS_MODALFRAME | WS_POPUP | WS_VISIBLE
EXSTYLE WS_EX_APPWINDOW
FONT 8, "MS Sans Serif"
BEGIN
DEFPUSHBUTTON "OK",IDOK,128,7,50,14
PUSHBUTTON "Cancel",IDCANCEL,128,23,50,14
LTEXT "TODO: Place dialog controls here.",IDC_STATIC,5,34,113,
8
END