[so] [WinAPI]Capture Window with Alpha Channel

[Andrei Cibotaru]

Pai nu poti sa ii dai tu din direct3d transparenta?

2009/6/16 Alin Popescu <alinpopescu at live.com>

> Salut!
>
> Nu are legatura cu ce s-a facut pe la so, dar are legatura cu mult prea
> obscurul WinAPI.
> Incerc sa fac o captura de fereastra si sa salvez pixelii intr-o textura de
> Direct3D. In final ferestre 3D cu transparenta :)
>
> Problema mea e ca nu reusesc sa salvez si alpha channel din fereastra.
> Am incercat sa folosesc si GetDIBits, dar fara rezultate.
>
> Poate a mai incercat cineva de pe aici si i-a gasit solutie.
> L-as ruga sa o impartaseasca cu comunitatea de WinAPI devs.
>
> void CaptureWindow(HWND hWnd, LPDIRECT3DTEXTURE9 Tex)
> {
>   HDC hdcWindow = GetWindowDC(hWnd);
>   HDC hdcMemory = CreateCompatibleDC(hdcWindow);
>   HBITMAP hBitmap = CreateCompatibleBitmap(hdcWindow, Width, Height);
>   hOld = SelectObject(hdcMemory, hBitmap);
>   bool bResult = PrintWindow(hWnd, hdcMemory, 0);
>
>   D3DLOCKED_RECT rect;
>   Tex->LockRect(0, &rect, NULL, D3DLOCK_DISCARD);
>   GetBitmapBits(hBitmap, Width * Height * 4, rect.pBits);
>   Tex->UnlockRect(0);}
>
>   SelectObject(hdcMemory, hOld);
>   DeleteObject(hBitmap);
>   DeleteDC(hdcMemory);
>   ReleaseDC(hWnd, hdcWindow);
> }
>
> Thanx in advance.
> _______________________________________________
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> so at cursuri.cs.pub.ro
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>



-- 
Cibo
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