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- program GDITEST31;
-
- uses
- Windows,
- Messages,
- SysUtils,
- GDIPAPI,
- GDIPOBJ,
- GDIPUTIL;
-
- Procedure OnPaint(DC: HDC);
- var
- pageGuid: TGUID;
- encoderClsid: TGUID;
- multi: TGPImage;
- graphic: TGPgraphics;
- begin
- graphic:= TGPgraphics.Create(dc);
-
- pageGuid := FrameDimensionPage;
- multi := TGPImage.Create('..\..\Media\Multiframe.tif');
-
- // Get the CLSID of the PNG encoder.
- GetEncoderClsid('image/png', encoderClsid);
-
- // Display and save the first page (index 0).
- multi.SelectActiveFrame(pageGuid, 0);
- graphic.DrawImage(multi, 10, 10);
- multi.Save('Page0.png', encoderClsid, nil);
-
- // Display and save the second page.
- multi.SelectActiveFrame(pageGuid, 1);
- graphic.DrawImage(multi, 220, 10);
- multi.Save('Page1.png', encoderClsid, nil);
-
- // Display and save the third page.
- multi.SelectActiveFrame(pageGuid, 2);
- graphic.DrawImage(multi, 10, 240);
- multi.Save('Page2.png', encoderClsid, nil);
-
- // Display and save the fourth page.
- multi.SelectActiveFrame(pageGuid, 3);
- graphic.DrawImage(multi, 220, 150);
- multi.Save('Page3.png', encoderClsid, nil);
-
- multi.Free;
- graphic.Free;
- end;
-
-
- function WndProc(Wnd : HWND; message : UINT; wParam : Integer; lParam: Integer) : Integer; stdcall;
- var
- Handle: HDC;
- ps: PAINTSTRUCT;
- begin
- case message of
- WM_PAINT:
- begin
- Handle := BeginPaint(Wnd, ps);
- OnPaint(Handle);
- EndPaint(Wnd, ps);
- result := 0;
- end;
-
- WM_DESTROY:
- begin
- PostQuitMessage(0);
- result := 0;
- end;
-
- else
- result := DefWindowProc(Wnd, message, wParam, lParam);
- end;
- end;
-
- var
- hWnd : THandle;
- Msg : TMsg;
- wndClass : TWndClass;
- begin
- wndClass.style := CS_HREDRAW or CS_VREDRAW;
- wndClass.lpfnWndProc := @WndProc;
- wndClass.cbClsExtra := 0;
- wndClass.cbWndExtra := 0;
- wndClass.hInstance := hInstance;
- wndClass.hIcon := LoadIcon(0, IDI_APPLICATION);
- wndClass.hCursor := LoadCursor(0, IDC_ARROW);
- wndClass.hbrBackground := HBRUSH(GetStockObject(WHITE_BRUSH));
- wndClass.lpszMenuName := nil;
- wndClass.lpszClassName := 'GettingStarted';
-
- RegisterClass(wndClass);
-
- hWnd := CreateWindow(
- 'GettingStarted', // window class name
- 'Copying Individual Frames from a Multiple-Frame Image', // window caption
- WS_OVERLAPPEDWINDOW, // window style
- Integer(CW_USEDEFAULT), // initial x position
- Integer(CW_USEDEFAULT), // initial y position
- Integer(CW_USEDEFAULT), // initial x size
- Integer(CW_USEDEFAULT), // initial y size
- 0, // parent window handle
- 0, // window menu handle
- hInstance, // program instance handle
- nil); // creation parameters
-
- ShowWindow(hWnd, SW_SHOW);
- UpdateWindow(hWnd);
-
- while(GetMessage(msg, 0, 0, 0)) do
- begin
- TranslateMessage(msg);
- DispatchMessage(msg);
- end;
- end.
-