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106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/*
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* PROJECT: ReactOS Tests
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: rostests/win32/user32/paintdesktop/PaintDesktop.c
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*
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* PURPOSE: Demonstrates how the user32!PaintDesktop() API visually works.
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* This API paints the desktop inside the given HDC with its
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* origin always fixed to the origin of the monitor on which
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* the window is present.
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*
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* PROGRAMMER: Hermes Belusca-Maito
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*/
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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static HINSTANCE hInst;
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static PWSTR szTitle = L"PaintDesktop";
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static PWSTR szWindowClass = L"PAINTDESKTOP";
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ATOM MyRegisterClass(HINSTANCE hInstance);
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BOOL InitInstance(HINSTANCE, int);
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LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
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int APIENTRY wWinMain(HINSTANCE hInstance,
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HINSTANCE hPrevInstance,
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LPWSTR lpCmdLine,
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int nCmdShow)
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{
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MSG msg;
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UNREFERENCED_PARAMETER(hPrevInstance);
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UNREFERENCED_PARAMETER(lpCmdLine);
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MyRegisterClass(hInstance);
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if (!InitInstance (hInstance, nCmdShow))
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return FALSE;
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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 (int) msg.wParam;
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}
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ATOM MyRegisterClass(HINSTANCE hInstance)
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{
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WNDCLASS wc;
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wc.style = 0;
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wc.lpfnWndProc = WndProc;
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wc.cbClsExtra = 0;
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wc.cbWndExtra = 0;
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wc.hInstance = hInstance;
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wc.hIcon = LoadIconW(NULL, IDI_WINLOGO);
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wc.hCursor = LoadCursorW(NULL, IDC_ARROW);
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wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
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wc.lpszMenuName = NULL;
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wc.lpszClassName = szWindowClass;
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return RegisterClass(&wc);
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}
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BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
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{
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HWND hWnd;
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hInst = hInstance;
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hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
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CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);
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if (!hWnd)
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return FALSE;
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ShowWindow(hWnd, nCmdShow);
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UpdateWindow(hWnd);
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return TRUE;
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}
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LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
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{
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switch (message)
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{
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case WM_MOVE:
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InvalidateRect(hWnd, NULL, TRUE);
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UpdateWindow(hWnd);
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break;
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case WM_ERASEBKGND:
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return (LRESULT)PaintDesktop((HDC)wParam);
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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, message, wParam, lParam);
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}
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return 0;
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}
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