mirror of
https://github.com/reactos/reactos.git
synced 2024-08-20 02:13:29 +00:00
167 lines
3.9 KiB
C
167 lines
3.9 KiB
C
#include <windows.h>
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#include <stdio.h>
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LRESULT WINAPI MainWndProc(HWND, UINT, WPARAM, LPARAM);
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int WINAPI
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WinMain(HINSTANCE hInstance,
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HINSTANCE hPrevInstance,
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LPSTR lpszCmdLine,
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int nCmdShow)
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{
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WNDCLASS wc;
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MSG msg;
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HWND hWnd;
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wc.lpszClassName = "ClipClass";
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wc.lpfnWndProc = MainWndProc;
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wc.style = CS_VREDRAW | CS_HREDRAW;
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wc.hInstance = hInstance;
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wc.hIcon = LoadIcon(NULL, (LPCTSTR)IDI_APPLICATION);
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wc.hCursor = LoadCursor(NULL, (LPCTSTR)IDC_ARROW);
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wc.hbrBackground = (HBRUSH)GetStockObject(GRAY_BRUSH);
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wc.lpszMenuName = NULL;
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wc.cbClsExtra = 0;
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wc.cbWndExtra = 0;
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if (RegisterClass(&wc) == 0)
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{
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fprintf(stderr, "RegisterClass failed (last error 0x%lX)\n",
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GetLastError());
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return(1);
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}
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hWnd = CreateWindow("ClipClass",
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"Line clipping test",
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WS_OVERLAPPEDWINDOW|WS_HSCROLL|WS_VSCROLL,
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0,
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0,
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CW_USEDEFAULT,
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CW_USEDEFAULT,
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NULL,
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NULL,
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hInstance,
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NULL);
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if (hWnd == NULL)
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{
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fprintf(stderr, "CreateWindow failed (last error 0x%lX)\n",
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GetLastError());
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return(1);
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}
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ShowWindow(hWnd, nCmdShow);
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while(GetMessage(&msg, NULL, 0, 0))
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{
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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return msg.wParam;
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}
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static void
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DrawLines(HDC hDC)
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{
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static struct
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{
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int fromx;
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int fromy;
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int tox;
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int toy;
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}
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points[ ] =
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{
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{ 50, 99, 125, 99 },
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{ 160, 99, 190, 99 },
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{ 300, 99, 225, 99 },
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{ 50, 100, 125, 100 },
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{ 160, 100, 190, 100 },
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{ 300, 100, 225, 100 },
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{ 50, 125, 300, 125 },
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{ 50, 149, 125, 149 },
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{ 160, 149, 190, 149 },
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{ 300, 149, 225, 149 },
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{ 50, 150, 125, 150 },
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{ 160, 150, 190, 150 },
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{ 300, 150, 225, 150 },
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{ 160, 249, 190, 249 },
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{ 160, 250, 190, 250 },
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{ 149, 50, 149, 125 },
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{ 149, 160, 149, 190 },
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{ 149, 300, 149, 225 },
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{ 150, 50, 150, 125 },
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{ 150, 160, 150, 190 },
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{ 150, 300, 150, 225 },
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{ 199, 50, 199, 125 },
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{ 199, 160, 199, 190 },
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{ 199, 300, 199, 225 },
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{ 200, 50, 200, 125 },
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{ 200, 160, 200, 190 },
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{ 200, 300, 200, 225 },
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{ 175, 50, 175, 300 },
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{ 50, 55, 300, 290 },
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{ 300, 295, 50, 60 },
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{ 50, 290, 300, 55 },
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{ 300, 60, 50, 295 },
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{ 55, 50, 290, 300 },
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{ 295, 300, 60, 50 },
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{ 55, 300, 290, 50 },
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{ 295, 50, 60, 300 }
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};
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int i;
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for (i = 0; i < sizeof(points) / sizeof(points[0]); i++)
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{
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MoveToEx(hDC, points[i].fromx, points[i].fromy, NULL);
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LineTo(hDC, points[i].tox, points[i].toy);
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}
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}
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LRESULT CALLBACK MainWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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PAINTSTRUCT ps;
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HDC hDC;
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RECT clr;
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HRGN ClipRgn, ExcludeRgn;
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RECT Rect;
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switch(msg)
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{
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case WM_PAINT:
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GetClientRect(hWnd, &clr);
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ClipRgn = CreateRectRgnIndirect(&clr);
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hDC = BeginPaint(hWnd, &ps);
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Rect.left = 100;
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Rect.top = 100;
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Rect.right = 250;
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Rect.bottom = 150;
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FillRect(hDC, &Rect, CreateSolidBrush(RGB(0xFF, 0x00, 0x00)));
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ExcludeRgn = CreateRectRgnIndirect(&Rect);
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CombineRgn(ClipRgn, ClipRgn, ExcludeRgn, RGN_DIFF);
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DeleteObject(ExcludeRgn);
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Rect.left = 150;
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Rect.top = 150;
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Rect.right = 200;
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Rect.bottom = 250;
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FillRect(hDC, &Rect, CreateSolidBrush(RGB(0xFF, 0x00, 0x00)));
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SelectObject(hDC, CreatePen(PS_SOLID, 0, RGB(0xFF, 0xFF, 0x00)));
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DrawLines(hDC);
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SelectObject(hDC, CreatePen(PS_SOLID, 0, RGB(0x00, 0x00, 0xFF)));
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ExcludeRgn = CreateRectRgnIndirect(&Rect);
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CombineRgn(ClipRgn, ClipRgn, ExcludeRgn, RGN_DIFF);
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DeleteObject(ExcludeRgn);
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SelectClipRgn(hDC, ClipRgn);
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DrawLines(hDC);
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EndPaint(hWnd, &ps);
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break;
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case WM_DESTROY:
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PostQuitMessage(0);
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break;
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default:
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return DefWindowProc(hWnd, msg, wParam, lParam);
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}
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return 0;
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}
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