procedure CaptureScreen(AFileName: string);const  CAPTUREBLT = $40000000;var  hdcScreen: HDC;  hdcCompatible: HDC;  bmp: TBitmap;  hbmScreen: HBITMAP;begin  hdcScreen := CreateDC('DISPLAY', nil, nil, nil);  hdcCompatible := CreateCompatibleDC(hdcScreen);  hbmScreen := CreateCompatibleBitmap(hdcScreen,    GetDeviceCaps(hdcScreen, HORZRES),    GetDeviceCaps(hdcScreen, VERTRES));  SelectObject(hdcCompatible, hbmScreen);  bmp := TBitmap.Create;  bmp.Handle := hbmScreen;  BitBlt(hdcCompatible,    0, 0,    bmp.Width, bmp.Height,    hdcScreen,    0, 0,    SRCCOPY or CAPTUREBLT);

  bmp.SaveToFile(AFileName);  bmp.Free;  DeleteDC(hdcScreen);  DeleteDC(hdcCompatible);end;

DX Primary Surface截圖程式碼!包含DX8與DX9兩個版本

...interface

{$DEFINE D3D9}

uses  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,  Dialogs, StdCtrls, Buttons,{$IFDEF D3D9}  // D3DX9, // use D3D to save surface  Direct3D9{$ELSE}  // D3DX8, // use D3D to save surface  Direct3D8{$ENDIF};...procedure TForm1.BitBtn1Click(Sender: TObject);// Capture screen through D3D.var  BitsPerPixel: Byte;  {$IFDEF D3D9}  pD3D: IDirect3D9;  pSurface: IDirect3DSurface9;  g_pD3DDevice: IDirect3DDevice9;  {$ELSE}  pD3D: IDirect3D8;  pSurface: IDirect3DSurface8;  g_pD3DDevice: IDirect3DDevice8;  {$ENDIF}  D3DPP: TD3DPresentParameters;  ARect: TRect;  LockedRect: TD3DLockedRect;  BMP: TBitmap;  i, p: Integer;begin  BitsPerPixel := GetDeviceCaps(Canvas.Handle, BITSPIXEL);  FillChar(d3dpp, SizeOf(d3dpp), 0);  D3DPP.Windowed := True;  D3DPP.Flags := D3DPRESENTFLAG_LOCKABLE_BACKBUFFER;  D3DPP.SwapEffect := D3DSWAPEFFECT_DISCARD;  D3DPP.BackBufferWidth := Screen.Width;  D3DPP.BackBufferHeight := Screen.Height;  D3DPP.BackBufferFormat := D3DFMT_X8R8G8B8;  {$IFDEF D3D9}  pD3D := Direct3DCreate9(D3D_SDK_VERSION);  pD3D.CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, GetDesktopWindow,    D3DCREATE_SOFTWARE_VERTEXPROCESSING, @D3DPP, g_pD3DDevice);  g_pD3DDevice.CreateOffscreenPlainSurface(Screen.Width, Screen.Height, D3DFMT_A8R8G8B8, D3DPOOL_SCRATCH, pSurface, nil);  g_pD3DDevice.GetFrontBufferData(0, pSurface);  {$ELSE}  pD3D := Direct3DCreate8(D3D_SDK_VERSION);  pD3D.CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_REF, GetDesktopWindow,    D3DCREATE_SOFTWARE_VERTEXPROCESSING, D3DPP, g_pD3DDevice);  g_pD3DDevice.CreateImageSurface(Screen.Width, Screen.Height, D3DFMT_A8R8G8B8, pSurface);  g_pD3DDevice.GetFrontBuffer(pSurface);  {$ENDIF}  // use D3D to save surface. Notes: D3DX%ab.dll is required!//  D3DXSaveSurfaceToFile('Desktop.bmp', D3DXIFF_BMP, pSurface, nil,  nil);  // use Bitmap to save surface  ARect := Screen.DesktopRect;  pSurface.LockRect(LockedRect, @ARect, D3DLOCK_NO_DIRTY_UPDATE or D3DLOCK_NOSYSLOCK or D3DLOCK_READONLY);  BMP := TBitmap.Create;  BMP.Width := Screen.Width;  BMP.Height := Screen.Height;  case BitsPerPixel of    8:  BMP.PixelFormat := pf8bit;    16: BMP.PixelFormat := pf16bit;    24: BMP.PixelFormat := pf24bit;    32: BMP.PixelFormat := pf32bit;  end;  p := Cardinal(LockedRect.pBits);  for i := 0 to Screen.Height - 1 do    begin      CopyMemory(BMP.ScanLine[i], Ptr(p), Screen.Width * BitsPerPixel div 8);      p := p + LockedRect.Pitch;    end;  BMP.SaveToFile('Desktop.bmp');  BMP.Free;  pSurface.UnlockRect;end;