Tags: Development, QtNovember 6, 2007 2:31 pm
Are you sure? Come on! Are you serious? Do you really want to quit the application and have a real life?
Lately I was looking for a way to disable that nifty little close (X) button on a window title bar. There is no way to do this using Qt code so I had to write my own platform dependant code.
This is the macro I am using on Windows:
# ifdef Q_OS_WIN
# include <windows.h>
# define ENABLE_CLOSE_BTN(Enable) \
{ QWidget* tlw = this; \
while (tlw && !tlw->isWindow() && tlw->windowType() != Qt::SubWindow) \
tlw = tlw->parentWidget(); \
HMENU hMenu = GetSystemMenu((HWND) tlw->winId(), FALSE); \
EnableMenuItem(hMenu, SC_CLOSE, Enable ? (MF_BYCOMMAND | MF_ENABLED) : (MF_BYCOMMAND | MF_GRAYED)); }
# endif // Q_OS_WIN
# include <windows.h>
# define ENABLE_CLOSE_BTN(Enable) \
{ QWidget* tlw = this; \
while (tlw && !tlw->isWindow() && tlw->windowType() != Qt::SubWindow) \
tlw = tlw->parentWidget(); \
HMENU hMenu = GetSystemMenu((HWND) tlw->winId(), FALSE); \
EnableMenuItem(hMenu, SC_CLOSE, Enable ? (MF_BYCOMMAND | MF_ENABLED) : (MF_BYCOMMAND | MF_GRAYED)); }
# endif // Q_OS_WIN
The macro can be used from any widget (e.g. a QWizardPage) as it will automatically look for the parent top level widget.
I still haven’t found a way to achieve the same on X11 or Mac OS X. Any suggestions? Anyone reading this blog? No? Rats, I knew that!
, support for JavaDoc and "real" enums.
