Getting / setting background colour of a control

[Skute]

Hi,

ive created a child dialog box for use in my tabs, but when i set the transparent property of the dialog, they still show up as gray.

so if you imagine it looks a little strange:

Gray background of application
White background of tabs
Gray background of child dialog for tab
White background for edit box.


So how can i emulate this manually by setting the background colour of the dialog box to the same background colour of the tab control?

Thanks

 

[palbano]

You can look at handling the WM_CTRLCOLORxxx messages.

Are you aware that removing your users ability to control colors is considered bad form in most cases?

-pete

 

[Skute]

Why wont the dialog box for the tab control appear transparent? Have i forgotten to enable something?

Ive got the extended style "WS_EX_TRANSPARENT" set for the dialogs, but they still appear with a grey background

 

[palbano]

Well since i have not found reason to ignore the UI guidelines i have no experience with this but my guess is that the MFC framework (base classes) for dialogs handle the WM_ERASEBKGND message and paint the background of the window with the default brush. Oh look, I just read the documentation for OnEraseBkgnd() and that’s almost exactly what it says


The default implementation erases the background using the window class background brush specified by the hbrBackground member of the window class structure.


-pete