GetDIBits() with a bitmap that is selected in a device context

[Michael Kaufmann]

The application "Fritz 5.32" calls GetDIBits() with a bitmap that is 
still selected in a device context (see bug 3893). The bitmap has a 
color table. GetDIBits() creates a memory DC, selects the bitmap into 
this DC, and calls GetDIBColorTable(). But this fails, because Wine 
can't select this bitmap in a memory device context again. According to 
MSDN, calling GetDIBits with a bitmap that is selected in a device 
context is not allowed. But surprisingly it works on Windows.

Does anybody have an idea how to solve this problem?

Regards,
Michael

[Dmitry Timoshkov]

"Michael Kaufmann" <hallo(a)michael-kaufmann.ch> wrote:
> The application "Fritz 5.32" calls GetDIBits() with a bitmap that is 
> still selected in a device context (see bug 3893). The bitmap has a 
> color table. GetDIBits() creates a memory DC, selects the bitmap into 
> this DC, and calls GetDIBColorTable(). But this fails, because Wine 
> can't select this bitmap in a memory device context again. According to 
> MSDN, calling GetDIBits with a bitmap that is selected in a device 
> context is not allowed. But surprisingly it works on Windows.
>
> Does anybody have an idea how to solve this problem?

A very first step should be to write a test case and integrate it
into the Wine GDI tests.

-- 
Dmitry.

[Michael Kaufmann]

I have submitted new tests to wine-patches.

@Dmitry: One of your bitmap tests triggers an assertion on Windows 9x. 
Look here: http://test.winehq.org/data/200605161000/

Regards,
Michael

Dmitry Timoshkov wrote:
> > The application "Fritz 5.32" calls GetDIBits() with a bitmap that is 
> > still selected in a device context (see bug 3893). The bitmap has a 
> > color table. GetDIBits() creates a memory DC, selects the bitmap into 
> > this DC, and calls GetDIBColorTable(). But this fails, because Wine 
> > can't select this bitmap in a memory device context again. According 
> > to MSDN, calling GetDIBits with a bitmap that is selected in a device 
> > context is not allowed. But surprisingly it works on Windows.
> >
> > Does anybody have an idea how to solve this problem?
>
> A very first step should be to write a test case and integrate it
> into the Wine GDI tests.

[Dmitry Timoshkov]

"Michael Kaufmann" <hallo(a)michael-kaufmann.ch> wrote:
> I have submitted new tests to wine-patches.

Thanks.
> @Dmitry: One of your bitmap tests triggers an assertion on Windows 9x. 
> Look here: http://test.winehq.org/data/200605161000/

That's strange. Although many tests fail here under Win98SE the test
runs to the end without any assertion.

-- 
Dmitry.