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- program GDITEST18;
-
- uses
- Windows,
- Messages,
- SysUtils,
- GDIPAPI,
- GDIPOBJ;
-
- // The following example defines three ranges of character positions within a
- // string and sets those ranges in a StringFormat object. Next, the
- // TGraphics.MeasureCharacterRanges method is used to get the three regions of
- // the display that are occupied by the characters that are specified by the
- // ranges. This is done for three different layout rectangles to show how the
- // regions change according to the layout of the string. Also, on the third
- // repetition, the string format flags are changed so that the regions measured
- // will include trailing spaces.
-
- Procedure OnPaint(DC: HDC);
- var
- graphics : TGPGraphics;
- Pen: TGPPen;
- Font: TGPFont;
- brush: TGPSolidBrush;
- Bound: TGPRECTF;
- const positions: array[0..3] of TGPPointF =
- ((x: 100.0; y: 150.0),
- (x: 150.0; y: 200.0),
- (x: 300.0; y: 150.0),
- (x: 150.0; y: 100.0));
- begin
- graphics := TGPGraphics.Create(dc);
- brush:= TGPSolidBrush.Create(aclBlack);
- Pen:= TGPPen.Create(brush);
- Font:= TGPFont.Create('Arial',16);
-
- graphics.MeasureDriverString(PUINT16(StringToOleStr('ABCD')), -1, Font, @positions, DriverStringOptionsCmapLookup, nil, Bound);
- graphics.DrawRectangle(pen,bound);
- graphics.DrawDriverString(PUINT16(StringToOleStr('ABCD')), -1, Font, brush, @positions, DriverStringOptionsCmapLookup, nil);
-
- brush.Free;
- Font.Free;
- Pen.Free;
- graphics.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
- 'Using DriverString',// 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.
-