directx 7 directdraw question

[markf78]

first, let me start by saying yes i realize that directdraw is
deprecated but unfortunately due to project requirements I must use
directx 7 for my accelerated 2D drawing.

that said, i am trying to use a dual view setup in windowed mode
(DDSCL_NORMAL) with an nvidia graphics card. the API documentation
specifies that the displays must be enumerated using
DirectDrawEnumerateEx() to get the GUIDs and then a separate
DirectDraw object must be created with those GUIDs for each dualview
display.

my program works correctly on the primary display (it blits a YUV
offscreen plain surface to an RGB offscreen plain surface ; then
another blit from the RGB offscreen surface to the primary surface)
but as soon as i drag the window to the secondary display the image
fails to draw even though both blits are still returning S_OK.

any ideas?

p.s. if i run the dxdiag directdraw tests on the secondary display,
the tests all work correctly.

[Phil Taylor]

what does the DX7 DDraw SDK sample MultiNut do?

iirc, the Donut sample was also multi-mon aware so its code may be of some
use.
--
Phil Taylor
http://www.futuregpu.net
now Intel Larrabee Native Title Czar
ex-Aces Core Lead PM, D3D SDK PM
somewhat D3D knowledgeable :-)

"markf78" wrote:

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