Use the drawing function to create the filling Area and the drawing function Filling Area

Use the drawing function to create the filling Area and the drawing function Filling Area

1 # include <Windows. h> 2 # include <tchar. h> 3 BOOLEAN InitWindowClass (HINSTANCE hInstance, int nCmdShow); 4 lresult callback WndProc (HWND, UINT, WPARAM, LPARAM); 5 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) 6 {7 MSG; 8 if (! InitWindowClass (hInstance, nCmdShow) 9 {10 MessageBox (NULL, L "window creation failed! ", _ T (" create window "), NULL); 11 return 1; 12} 13 while (GetMessage (& msg, NULL, 0, 0 )) 14 {15 TranslateMessage (& msg); 16 DispatchMessage (& msg); 17} 18 19 return (int) msg. wParam; 20} 21 lresult callback WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) 23 {24 HDC hDC; 25 PAINTSTRUCT PtStr; 26 HBRUSH hBrush; 27 HPEN hPen; 28 static int dispMode =-1; 29 LPCTSTR str; 30 switch (message) 31 {32 case WM_LBUTTONDOWN: 33 InvalidateRect (hWnd, NULL, TRUE); 34 break; 35 case WM_PAINT: 36 hDC = BeginPaint (hWnd, & PtStr ); 37 dispMode = (dispMode + 1) % 6; 38 switch (dispMode) 39 {40 case 0: 41 str = _ T ("mming mode MM_TEXT: Default ing mode "); 42 SetMapMode (hDC, MM_TEXT); // set the ing mode to the default mode 43 TextOut (hDC, 0, 0, str, _ tcsclen (str )); // output ing mode and ing ratio 44 break; 45 case 1: 46 str = _ T ("mming mode MM_ISOTROPIC: The Window coordinate is 20 × 20, and the ing is based on The port size is 10 × 10, and the image size is doubled "); 47 SetMapMode (hDC, MM_ISOTROPIC); // you can set the ing mode to 48 SetWindowExtEx (hDC, 20, 20, NULL ); // The Window rectangle is x 20 49 SetViewportExtEx (hDC, 10, 10, NULL); // The rectangle mapped to the window is x 10 50 TextOut (hDC, 0, 0, str, _ tcsclen (str); 51 break; 52 case 2: 53 str = _ T ("mming method MM_ISOTROPIC: The Window coordinate is 10 × 10, the ing is 20x20 for the view, and the image size is doubled "); 54 SetMapMode (hDC, MM_ISOTROPIC); 55 set1_wextex (hDC, 10, 10, NULL ); // The Window rectangle is 10x10 56 SetViewportExtEx. (HDC, 20, 20, NULL); // The rectangle mapped to the viewport is 20x20 57 TextOut (hDC, 0, 0, str, _ tcsclen (str )); 58 break; 59 case 3: 60 str = _ T ("mming mode MM_ANISOTROPIC: The Window coordinate is 10 × 10, the ing is 20 × 10, and the image is doubled horizontally, portrait unchanged "); 61 SetMapMode (hDC, MM_ANISOTROPIC); 62 set1_wextex (hDC, 10, 10, NULL); // The Window rectangle is 10 × 10 63 SetViewportExtEx (hDC, 20, 10, NULL); // The rectangle mapped to the viewport is 20 × 10 64 TextOut (hDC, 0, 0, str, _ tcsclen (str); 65 break; 66 case 4: 67 str = _ T (" er Form MM_ANISOTROPIC: The Window coordinates are 10 × 10, the ing is 20 × 5, the image is scaled up one time horizontally, and the portrait is reduced by one time "); 68 SetMapMode (hDC, MM_ANISOTROPIC ); 69 setmediawextex (hDC, 10, 10, NULL); // The Window rectangle is 10 × 10 70 SetViewportExtEx (hDC, 20, 5, NULL ); // The rectangle mapped to the viewport is 20x5 71 TextOut (hDC, 0, 0, str, _ tcsclen (str); 72 break; 73 case 5: 74 str = _ T ("mming mode MM_ISOTROPIC: The Window coordinate is 10 × 10, and the ing is 20 × 5. In order to maintain the original aspect ratio, the system will adjust the ing ratio "); 75 SetMapMode (hDC, MM_ISOTROPIC); 76 SetWindowExtEx (hDC, 10, 10, NULL); // The Window rectangle is 10 × 10 77 SetViewportExtEx (hDC, 20, 5, NULL ); // The rectangle mapped to the viewport is 20x5 78 TextOut (hDC, 0, 0, str, _ tcsclen (str); 79 break; 80} 81 hPen = (HPEN) getStockObject (BLACK_PEN); // set the paint brush to the predefined black paint brush 82 hBrush = (HBRUSH) GetStockObject (DKGRAY_BRUSH); // deep gray paint brush 83 SelectObject (hDC, hBrush ); // select image brush 84 SelectObject (hDC, hPen); // select paint brush 85 RoundRect (hDC, 50,120,100,200, 15, 15); // rounded rectangle 86 hBrush = (HB RUSH) GetStockObject (LTGRAY_BRUSH); // pale gray image brush 87 SelectObject (hDC, hBrush); // select image brush 88 Ellipse (hDC, 150, 50,200,150 ); // elliptical 89 hBrush = (HBRUSH) GetStockObject (HOLLOW_BRUSH); // use the predefined virtual image brush 90 SelectObject (hDC, hBrush); // select 91 Pie (hDC, 250, 50,300,100,250, 50,300, 50); // pie-shaped 92 EndPaint (hWnd, & PtStr); // end painting 93 break; 94 case WM_DESTROY: 95 PostQuitMessage (0 ); // call PostQuitMessage to send the WM_QUIT message 96 br Eak; 97 default: 98 return DefWindowProc (hWnd, message, wParam, lParam); // the default system message processing function 99 break; 100} 101 return 0; 102} 103 104 BOOLEAN InitWindowClass (HINSTANCE hInstance, int nCmdShow) 105 {106 WNDCLASSEX wcex; 107 HWND hWnd; 108 TCHAR szWindowClass [] = L "window example "; 109 TCHAR szTitle [] = L "ing mode and filling example"; 110 wcex. cbSize = sizeof (WNDCLASSEX); 111 wcex. style = 0; 112 wcex. lpfnWndProc = WndProc; 113 wcex. cbCls Extra = 0; 114 wcex. cbWndExtra = 0; 115 wcex. hInstance = hInstance; 116 wcex. hIcon = LoadIcon (hInstance, MAKEINTRESOURCE (IDI_APPLICATION); 117 wcex. hCursor = LoadCursor (NULL, IDC_ARROW); 118 wcex. hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH); 119 wcex. lpszMenuName = NULL; 120 wcex. lpszClassName = szWindowClass; 121 wcex. hIconSm = LoadIcon (wcex. hInstance, MAKEINTRESOURCE (IDI_APPLICATION), 122 if (! RegisterClassEx (& wcex) 123 return FALSE; 124 hWnd = CreateWindow (125 szWindowClass, 126 szTitle, 127 WS_OVERLAPPEDWINDOW, 128 CW_USEDEFAULT, CW_USEDEFAULT, 129 CW_USEDEFAULT, CW_USEDEFAULT, 130 NULL, 131 NULL, 132 hInstance, 133 NULL134); 135 if (! HWnd) 136 return FALSE; 137 ShowWindow (hWnd, nCmdShow); 138 UpdateWindow (hWnd); 139 return TRUE; 140}