Analog clock, clock

Analog clock, clock

1 # include <Windows. h> 2 # include <tchar. h> 3 # include <math. h> 4 typedef struct Time 5 {6 int hour, min, sec; 7} TimeStructure; 8 BOOLEAN InitWindowClass (HINSTANCE hInstance, int nCmdShow); 9 lresult callback WndProc (HWND, UINT, WPARAM, LPARAM); 10 void AdjustTime (TimeStructure * x); 11 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) 12 {13 MSG; 14 if (! InitWindowClass (hInstance, nCmdShow) 15 {16 MessageBox (NULL, L "window creation failed! ", _ T (" create window "), NULL); 17 return 1; 18} 19 while (GetMessage (& msg, NULL, 0, 0 )) 20 {21 TranslateMessage (& msg); 22 DispatchMessage (& msg); 23} 24 return (int) msg. wParam; 25} 26 lresult callback WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) 27 {28 HDC hDC; 29 PAINTSTRUCT ps; 30 HBRUSH hBrush; 31 HPEN hPen; 32 RECT clientRect; 33 static TimeStructure x; 34 float sita = 0; 35 int xOr G, yOrg, rSec, rMin, rHour, rClock, xBegin, xEnd, yBegin, yEnd; 36 switch (message) 37 {38 case WM_CREATE: // when creating a window, response Message 39 SetTimer (hWnd, 9999,100 0, NULL); // set the timer 40 break; 41 case WM_PAINT: 42 x. sec ++; 43 AdjustTime (& x); 44 hDC = BeginPaint (hWnd, & ps); 45 GetClientRect (hWnd, & clientRect ); // obtain the size of the user Area 46 hPen = (HPEN) GetStockObject (BLACK_PEN); // set the paint brush to the pre-defined black paint brush 47 hBrush = CreateSolidBrush (RGB (255,220,220); // create a pink monochrome paint brush 48 SelectObject (hDC, hPen); // select paint brush 49 SelectObject (hDC, hBrush ); // select image brush 50 xOrg = (clientRect. left + clientRect. right)/2; 51 yOrg = (clientRect. top + clientRect. bottom)/2; // calculate the coordinates of the center of the screen, which is also the center of the clock 52 rClock = min (xOrg, yOrg)-50; // The radius of the clock is 53 rSec = rClock * 6/7; // the radius of the second-hand is 54 rMin = rClock * 5/6; // the radius of the sub-needle is 55 rHour = rClock * 2/3; // The radius of the hour hand is 56 Ellipse (hDC, xOrg-rCloc K, yOrg-rClock, xOrg + rClock, yOrg + rClock); // draw the surface circle 57 for (int I = 0; I <60; I ++) // plot the scale of the surface 58 {59 if (I % 5) // draw the whole scale of the surface 60 {61 hPen = CreatePen (PS_SOLID, 2, RGB (255, 0, 0); 62 SelectObject (hDC, hPen); 63 xBegin = xOrg + rClock * sin (2x3.1415926 * I/60 ); 64 yBegin = yOrg + rClock * cos (2*3.1415926 * I/60); 65 MoveToEx (hDC, xBegin, yBegin, NULL); 66 xEnd = xOrg + (rClock-20) * sin (2*3. 1415926 * I/60); 67 yEnd = yOrg + (rClock-20) * cos (2*3.1415926 * I/60 ); 68 69} 70 else // draw a non-integral scale of the surface 71 {72 hPen = CreatePen (PS_SOLID, 5, RGB (255, 0, 0); 73 SelectObject (hDC, hPen); 74 xBegin = xOrg + rClock * sin (2*3.1415926 * I/60); 75 yBegin = yOrg + rClock * cos (2*3.1415926 * I/60 ); 76 MoveToEx (hDC, xBegin, yBegin, NULL); 77 xEnd = xOrg + (rClock-25) * sin (2*3.1415926 * I/60); 78 yEn D = yOrg + (rClock-25) * cos (2*3.1415926 * I/60); 79} 80 LineTo (hDC, xEnd, yEnd); 81 DeleteObject (hPen ); 82} 83 hPen = CreatePen (PS_SOLID, 2, RGB (255, 0, 0); 84 SelectObject (hDC, hPen); 85 sita = 2*3.1415926 * x. sec/60; 86 xBegin = xOrg + (int) (rSec * sin (sita); 87 yBegin = yOrg-(int) (rSec * cos (sita )); // The starting point of the second-hand. Its position is at the end of the second-hand. 88 xEnd = xOrg + (int) (rClock * sin (sita + 3.1415926)/8); 89 yEnd = y Org-(int) (rClock * cos (sita + 3.1415926)/8); // the end point of the second needle, the length of the second-hand direction is 1/8 90 MoveToEx (hDC, xBegin, yBegin, NULL); 91 LineTo (hDC, xEnd, yEnd ); // draw the second-hand 92 hPen = CreatePen (PS_SOLID, 5, RGB (0, 0, 0); 93 SelectObject (hDC, hPen); 94 sita = 2*3.1415926 * x. min/60; 95 xBegin = xOrg + (int) (rMin * sin (sita); 96 yBegin = yOrg-(int) (rMin * cos (sita )); // the start point of the sub-needle 97 xEnd = xOrg + (int) (rClock * sin (sita + 3.14 15926)/8); 98 yEnd = yOrg-(int) (rClock * cos (sita + 3.1415926)/8); // the end point of the sub-needle 99 MoveToEx (hDC, xBegin, yBegin, NULL); 100 LineTo (hDC, xEnd, yEnd); // draw the sub-needle 101 hPen = CreatePen (PS_SOLID, 10, RGB (0, 0, 0 )); 102 SelectObject (hDC, hPen); 103 sita = 2*3.1415926 * x. hour/12; 104 xBegin = xOrg + (int) (Fig * sin (sita); 105 yBegin = yOrg-(int) (Fig * cos (sita )); 106 xEnd = xOrg + (int) (rClock * sin (sita + 3.1415 926)/8); 107 yEnd = yOrg-(int) (rClock * cos (sita + 3.1415926)/8); 108 MoveToEx (hDC, xBegin, yBegin, NULL ); 109 LineTo (hDC, xEnd, yEnd); // draw DeleteObject (hPen); 110 DeleteObject (hBrush); 111 EndPaint (hWnd, & ps ); // end drawing 113 break; 114 case WM_TIMER: // responds to the timer message sent by the timer 115 if (wParam = 9999) // determine whether the message is set by the timer 116 InvalidateRect (hWnd, NULL, true); // when the screen is refreshed 117 break; 118 case WM_SIZE: // when the window size is changed, refresh window 119 Inv AlidateRect (hWnd, NULL, true); 120 break; 121 case WM_DESTROY: 122 PostQuitMessage (0); // call PostQuitMessage to send the WM_QUIT message 123 break; 124 default: 125 return DefWindowProc (hWnd, message, wParam, lParam); // default system message processing function 126 break; 127} 128 return 0; 129} 130 void AdjustTime (TimeStructure * x) 131 {132 if (x-> sec = 60) 133 {134 x-> sec = 0; 135 x-> min ++; 136 if (x-> min = 60) 137 {138 x-> min = 0; 139 x-> hour ++; 140 if (X-> hour = 12) 141 x-> hour = 0; 142} 143} 144 BOOLEAN InitWindowClass (HINSTANCE hInstance, int nCmdShow) 145 {146 WNDCLASSEX wcex; 148 HWND hWnd; 149 TCHAR szWindowClass [] = L "window example"; 150 TCHAR szTitle [] = L "analog clock"; 151 wcex. cbSize = sizeof (WNDCLASSEX); 152 wcex. style = 0; 153 wcex. lpfnWndProc = WndProc; 154 wcex. cbClsExtra = 0; 155 wcex. cbWndExtra = 0; 156 wcex. hInstance = hInstance; 157 wcex. hIcon = Loa DIcon (hInstance, MAKEINTRESOURCE (IDI_APPLICATION); 158 wcex. hCursor = LoadCursor (NULL, IDC_ARROW); 159 wcex. hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH); 160 wcex. lpszMenuName = NULL; 161 wcex. lpszClassName = szWindowClass; 162 wcex. hIconSm = LoadIcon (wcex. hInstance, MAKEINTRESOURCE (IDI_APPLICATION), 163 if (! RegisterClassEx (& wcex) 164 return FALSE; 165 hWnd = CreateWindow (166 szWindowClass, 167 szTitle, 168 WS_OVERLAPPEDWINDOW, 169 CW_USEDEFAULT, CW_USEDEFAULT, 170 CW_USEDEFAULT, CW_USEDEFAULT, 171 NULL, 172 NULL, 173 hInstance, 174 NULL175); 176 if (! HWnd) 177 return FALSE; 178 ShowWindow (hWnd, nCmdShow); 179 UpdateWindow (hWnd); 180 return TRUE; 181}