Toolbar background error

Gerard Patel gerard.patel at
Thu Aug 16 19:49:13 CDT 2001

At 05:10 PM 16/08/2001 GMT, you wrote:

>It's the client rectangle in the toolbar (I believe).  I've handed the
>issue back to Guy.

I think that's a general issue, not specific to toolbars. 
We are seeing it for toolbars because it's a trick that is used mainly
for toolbars.

What happens I think is that some apps are not satisfied with the standard
toolbar look. They want to have a bigger border around the buttons. 
That is not provided by the standard control, at least when these apps
were written (maybe it is now, I am not following these matters closely). 

What these apps are doing is playing with WM_NCCALCSIZE to restrict
the client rectangle to something smaller than what remains when 
the system clips the true nonclient area. In the case of one of my test
apps, this is done by subclassing (the Wine code is never called).

Since GetWindowRect returns only the width and the height of the
client area, and is setting the origin to 0 - 0, the custom client area
appears higher that it is to WM_ERASEBKGND and the lower part of
the window is not painted (toolbar in the case of the app I see)

Now, I don't know yet how should be done the erasing of this custom
nonclient area :-/


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