Save screenshot of DirectX window

[Dude]

I finally found some code that apparently saves DirectX screenshots. Anyone know how to convert it to PureBasic?

From: https://www.gamedev.net/forums/topic/22 ... tx-window/

Code: Select all

Allright, i got it to work finally (working with GDI functions btw):

otherwindow = myClass.Getotherwindowhwnd();
myDC = GetDC (otherwindow);
memDC = CreateCompatibleDC (myDC);
myBitmap = CreateCompatibleBitmap (myDC, 800, 600);
SelectObject (memDC, myBitmap);
rc = BitBlt (memDC, 0, 0, 800, 600, myDC, 0, 0, SRCCOPY);

b = (char*) malloc (800*600*4);
for (int i=0;i < 256; i++) b = i;
BITMAPINFO* myInfo;
myInfo = (BITMAPINFO*) malloc (sizeof (BITMAPINFO) + sizeof(RGBQUAD)*800+600);
myInfo->bmiHeader.biBitCount = 32;
myInfo->bmiHeader.biClrImportant = 0;
myInfo->bmiHeader.biClrUsed = 0;
myInfo->bmiHeader.biCompression = BI_RGB;
myInfo->bmiHeader.biHeight = 600;
myInfo->bmiHeader.biPlanes = 1;
myInfo->bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
myInfo->bmiHeader.biSizeImage = 800*600*4;
myInfo->bmiHeader.biWidth = 800;
myInfo->bmiHeader.biXPelsPerMeter = 1;
myInfo->bmiHeader.biYPelsPerMeter = 1;
GetDIBits (memDC, myBitmap, 0, 600, b, myInfo, DIB_RGB_COLORS);
free (myInfo);
//free (b);

Now i have the screen shot in b[..] and can save it to disk. Thx for all replies anyway!!

[chi]

You can't use GDI to capture a fullscreen game! It will always just capture the empty window's client area where the game is rendered on, not the game itself...

On Vista or above, start a game in fullscreen and hold [Win] + hit [Tab]. Windows wont be able to show a preview of the game and I bet MS would, if they easily could
The only way I can think of is to hook the game (EndScene, glSwapBuffers, ...) and copy the content of the buffer to an image. Please correct me if I'm wrong...

[firace]

A quick, slimmed down conversion of the above code... (just replace TargetWindowTitle with the target you want to capture)
Does that work? (I didn't sleep much - There may be some bugs left)

Code: Select all

otherwindowID = FindWindow_(0,"TargetWindowTitle")

myDC = GetDC_(otherwindowID)
memDC = CreateCompatibleDC_(myDC)
myBitmap = CreateCompatibleBitmap_(myDC, 800, 600)
SelectObject_(memDC, myBitmap)                    
rc = BitBlt_(memDC, 0, 0, 800, 600, myDC, 0, 0, #SRCCOPY)


myInfo.BITMAPINFO
With myInfo\bmiHeader
  \biSize=SizeOf(BITMAPINFOHEADER) ;Size of struct
  \biWidth=800                     ;Bitmap width
  \biHeight=600                    ;Bitmap height
  \biPlanes=1                      ;Single plane
  \biBitCount=32                   ;Bit depth
  \biCompression=#BI_RGB           ;No compression
  \biSizeImage=800*600*4
  \biXPelsPerMeter=0
  \biYPelsPerMeter=0
  \biClrUsed=0
  \biClrImportant=0
EndWith

GetDIBits_(memDC, myBitmap, 0, 600, 0, myInfo, #DIB_RGB_COLORS);

OpenWindow(0, 100, 100, 440, 440, "")
ImageGadget(1,10,10,500,500,myBitmap)
Repeat : Until WaitWindowEvent() = 13116

[Dude]

start a game in fullscreen and hold [Win] + hit [Tab]. Windows wont be able to show a preview of the game

You're right. The Windows thumbnail doesn't show the game. Thanks firace, for converting the code, too. It didn't work, unfortunately.