Environment: Windows NT4 SP4 (German version), Visual C++ 6 SP2
If you make a dialog with a bitmap as background, you’ll probably handle
WM_CTLCOLOR + CTLCOLOR_STATIC to set a transparent background for text items.
This works fine except with groupboxes: if the text is transparent the
group rectangle goes right through your text, which looks BAD.
To make it look better, use this class CTGroupBox. It draws every side
of the box rectangle using LineTo’s and takes care of the text position
Usage is simple: just give your group boxes unique IDs (instead of IDC_STATIC)
and then subclass them in OnInitDialog:
// in your .cpp file
// I’m using Joerg Koenigs CBitmapDialog class
// (see Dialog section of CodeGuru for more info)
// in your .h file
class CMyBitmappedDialog : public CBitmapDialog
Note: Group boxes are technically buttons(!) with style BS_GROUPBOX
but they don’t seem to receive WM_DRAWITEMs even if BS_OWNERDRAW is set. So
I do the drawing in an WM_PAINT handler but thats not too hard here because
they can’t be “pressed” or get the focus rect.
Comments, suggestions, bug reports etc. are welcome! Put them here as
comment or send them directly to me.