Application Example of the mouse and application example of the mouse

Application Example of the mouse and application example of the mouse

1 # include <Windows. h> 2 # include <tchar. h> 3 BOOLEAN InitWindowClass (HINSTANCE hInstance, int nCmdShow); 4 lresult callback WndProc (HWND, UINT, WPARAM, LPARAM); 5 HFONT CreateFont (HDC hDC, int nCharHeight, BOOL bItalic); 6 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) 7 {8 MSG; 9 if (! InitWindowClass (hInstance, nCmdShow) 10 {11 MessageBox (NULL, L "window creation failed! ", _ T (" create window "), NULL); 12 return 1; 13} 14 while (GetMessage (& msg, NULL, 0, 0 )) 15 {16 TranslateMessage (& msg); 17 DispatchMessage (& msg); 18} 19 return (int) msg. wParam; 20} 21 lresult callback WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) 22 {23 HDC hDC; 24 HFONT hF; 25 PAINTSTRUCT ps; 26 TEXTMETRIC tm; 27 TCHAR str [] = L "Hello World"; 28 int I = 0; 29 static int x [13], y [13]; 30 static int color [13]; 31 POINT pt; 32 switch (message) 33 {34 case WM_CREATE: 35 SetTimer (hWnd, 1111,200, NULL); 36 GetCursorPos (& pt ); 37 ScreenToClient (hWnd, & pt); 38 for (I = 0; I <13; I ++) 39 {40 x [I] = pt. x + (I-1) * 40; 41 y [I] = pt. y; 42 color [I] = 25 * (I-1); 43} 44 break; 45 case WM_PAINT: 46 hDC = BeginPaint (hWnd, & ps ); 47 hF = CreateFont (hDC, 40, 0); 48 SelectObject (hDC, hF ); 49 for (I = 12; I> 1; I --) 50 {51 x [I] = x [I-1] + 40; 52 y [I] = y [I-1]; 53} 54 GetCursorPos (& pt); 55 ScreenToClient (hWnd, & pt); 56 x [1] = pt. x; 57 y [1] = pt. y; 58 for (I = 1; I <13; I ++) 59 {60 SetTextColor (hDC, RGB (255-color [I], color [I], 255); 61 TextOut (hDC, x [I], y [I], & str [I], 1 ); 62} 63 color [1] = color [12]; 64 for (I = 12; I> 1; I --) 65 color [I] = color [I-1]; 66 DeleteObjec T (hF); 67 EndPaint (hWnd, & ps); 68 break; 69 case WM_TIMER: 70 if (wParam = 1111) 71 InvalidateRect (hWnd, NULL, 1 ); 72 break; 73 case WM_DESTROY: 74 PostQuitMessage (0); 75 break; 76 default: 77 return DefWindowProc (hWnd, message, wParam, lParam); 78 break; 79} 80 return 0; 81} 82 BOOLEAN InitWindowClass (HINSTANCE hInstance, int nCmdShow) 83 {84 WNDCLASSEX wcex; 85 HWND hWnd; 86 TCHAR szWindowCl Ass [] = L "window example"; 87 TCHAR szTitle [] = L "Mouse application example"; 88 wcex. cbSize = sizeof (WNDCLASSEX); 89 wcex. style = 0; 90 wcex. lpfnWndProc = WndProc; 91 wcex. cbClsExtra = 0; 92 wcex. cbWndExtra = 0; 93 wcex. hInstance = hInstance; 94 wcex. hIcon = LoadIcon (hInstance, MAKEINTRESOURCE (IDI_APPLICATION); 95 wcex. hCursor = LoadCursor (NULL, IDC_ARROW); 96 wcex. hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH); 97 wc Ex. lpszMenuName = NULL; 98 wcex. lpszClassName = szWindowClass; 99 wcex. hIconSm = LoadIcon (wcex. hInstance, MAKEINTRESOURCE (IDI_APPLICATION); 100 if (! RegisterClassEx (& wcex) 101 return FALSE; 102 hWnd = CreateWindow (103 szWindowClass, 104 szTitle, 105 WS_OVERLAPPEDWINDOW, 106 CW_USEDEFAULT, CW_USEDEFAULT, 107 CW_USEDEFAULT, CW_USEDEFAULT, 108 NULL, 109 NULL, 110 hInstance, 111 NULL112); 113 if (! HWnd) 114 return FALSE; 115 ShowWindow (hWnd, nCmdShow); 116 UpdateWindow (hWnd); 117 return TRUE; 118} 119 HFONT CreateFont (HDC hDC, int nCharHeight, BOOL bItalic) 120 {121 HFONT hFont; 122 hFont = CreateFont (123 nCharHeight, 124 0,125 0,126 0,127 bItalic, 400,128 129 0,130 ANSI_CHARSET, 0,131 OUT_DEFAULT_PRECIS, 132 bytes, 133 DEFAULT_QUALITY, 134 DEFAULT_PITCH | FF_DONTCARE, 136 L "Arial" 137); 138 if (hFont = NULL) 139 return NULL; 140 else141 return hFont; 142}

No effect found ^-^