how should I add a directdraw into a CScrollView and let the surface r

[natty]

hello, I am new about directdraw, I recently setup directx9 and wanna load and display some pictures in my MFC program.

the MFC program is a single document program and started by the AppWizard and the VIEW is derived from CScrollView.

Firstly I created a primary surface and a offscreen surface.

Then I use BitBlt() to copy some picture files onto the offscreen surface.

Finally,in CXXXView::OnDraw(), I use Blt() to copy the offscreen surface to primary surface.

The program is running all right , But when I OnSize or Drag the HBar(VBar), the picture should move but not.

I think that the coordinate argument of the Blt() should be a variable instead of a constant, and I need to add some codes in

OnHScroll(), OnVScroll(), OnSize(), OnMove().

So there are two questions I would like to ask:

1.Is my method RIGHT if I want to use directdraw in View in a single document program ?

2.Whether I need to manually override and add some codes in OnMove(),OnSize(),etc. And what codes should I add? Is there any sample?

the second question has made me nearly mad, I found lots of sample and document, but all of them is just display a picture in VIEW, never mentioned the movement situation.

Thank you !

[Royalty]

I'm pretty sure that would be in 1 of the programming sections, cause I have no idea what the heck your talking about.

[WolfX2]

@natty - Woa...and i thought photo-shop was complicated

...sorry buddy, i have no clue what your talking about

[natty]

i'm sorry, maybe i post the article into a wrong place.

what do you mean that you couldn't understand what i said?more programming or my bad English.....?

[WolfX2]

your English is fine, i just don't understand what your talking about program wise