Question

In the main view of my application, I create a modeless dialog i.e.:

CMyDialog dlg;
int returnval = dlg.doModal();

Now this is the first time this happens to me, but in this particular dialog, if I want to display a message box on a button press, it always appears behind the dialog. If I press the alt key on the keyboard, then it gains focus and comes up front.

int nResult = AfxMessageBox(_T("Are you sure you want to delete this file?"), MB_YESNO|MB_ICONQUESTION|MB_SETFOREGROUND | MB_TOPMOST | MB_TASKMODAL);
if(nResult == IDNO){
    return;
}
else{
...
}

I am wondering what have I done or what option I checked that would result in this behaviour ?

---

EDIT: Here is the small portion of code in my OnInitDialog function, I commented out all the rest and the same behaviour remains:

CDialog::OnInitDialog();
DEVMODE sDevMode;
ZeroMemory(&sDevMode, sizeof(DEVMODE));
sDevMode.dmSize = sizeof(DEVMODE);

EnumDisplaySettings(NULL,ENUM_CURRENT_SETTINGS,&sDevMode);
_screenw = (int)sDevMode.dmPelsWidth;
_screenh = (int)sDevMode.dmPelsHeight;

_dlgx = (int) 50;
_dlgy = (int) 50;
_dlgw = (int) _screenw-100;
_dlgh = (int) _screenh-100;

this->MoveWindow(_dlgx,_dlgy,_dlgw,_dlgh);

Answer 1

AfxMessageBox would always be modal on the top window in Z-order. I don’t see any need to pass additional flags to bring it forward. Yes, if the application (main window) is not in focus, you may activate it explicitly before calling AfxMessageBox.

The only situation I see message-box not coming forward is when parent window is created by other thread, and AfxMessageBox is being called from another thread.