Device context to file

[Natter]

Hi all !

How to save device context of a window in bmp-file ?

[Natter]

hDeskTop:=GetWindowDc(FindWindow(...))

siz:=GetWndRect(hDeskTop)
hDC := CreateCompatibleDC( hDeskTop )
hBmp := CreateCompatibleBitMap( hDC, siz[4]-siz[2], siz[3]-siz[1])
hOldBmp:=SelectObject(hDc, hBmp)
BitBlt(hDc, 0, 0, siz[4]-siz[2], siz[3]-siz[1], hDeskTop, 0, 0, 13369376) //SCRCOPY
oImg:=GdiBmp():New()
oImg:hBmp:=Gdip_FromHBitmap(hBmp,, HasAlpha(hBmp))
oImg:Save("test.bmp")
SelectObject(hDc, hOldBmp)
DeleteDC(hDc)
DeleteObject(hOldBmp)
ReleaseDC(0, hDeskTop)

It works and I get a screenshot of a window to a bitmap file, but only in black and white. How can I get color bitmap ?

[cnavarro]

Try with

Code: Select all  Expand view

   SaveWindow( hWnd, cBmp, nWidth , nHeight )  // cBmp - .bmp, .png, ..

 

[Natter]

Thank you, works perfectly ! Only I didn't find description of this function

[cnavarro]

Look classes\tgdiplus.prg