Problem with TAB control and a MODELESS dialog in a ATL COM DLL
You'll never get Tab keypress in either WM_KEYDOWN or WM_CHAR handler
because IsDialogMessage() will interpret it. That is, unless you subclass
the control, handle WM_GETDLGCODE message and return DLGC_WANTTAB from it.
Also, if I remember right, you'll have to enable tabs for an edit control
with EM_SETTABSTOPS message. Or, you can handle tabs yourself.
With best wishes,
Igor Tandetnik
I have a ATL COM DLL in which one of the interface methods invokes a
MODELESS dialog. If from a Front End application if I call the interface
method, the MODELESS dialog pops up. Here I had a problem initially. The
problem was: After invoking the MODELESS dialog from the Front End, on TAB
key press, Focus was not shifting from one control to the other. I solved
the problem by writing the following code in the PreTranslateMessage of the
Front End:
HWND hWndModeless = GetActiveWindow();
if (hWndModeless != NULL)
if (IsDialogMessage(hWndModeless, pMsg))
return TRUE;
}
return CWinApp::PreTranslateMessage(pMsg);
After this, on TAB key press, Focus started shifting from one control to the
other. BUT even if the focus is on a EDIT BOX, on TAB key press, the focus
shifts to the next control - WHICH IS NOT DESIRABLE. i.e., If the focus is
on a EDIT BOX, on TAB key press, the focus SHOULD NOT shift to the next
control.
So, I tried to trap the TAB key press of the edit control, by subclassing
CEdit and overrided OnChar(). But when TAB key is pressed OnChar() is not at
all getting executed. So I failed in trapping it.
Can anybody please help me?
Regards,
Balaji
