vc++ Windows编程实现五角星

#include <windows.h> #include <stdlib.h> #include <string.h> #include <math.h> #define PI 3.14159 long n=0; #define R 200 long WINAPI WndProc(HWND hWnd,UINT iMessage,UINT wParam,LONG lParm); BOOL InitWindowsClass(HINSTANCE hInstance); BOOL InitWindows(HINSTANCE hInstance,int nCmdShow); int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow) { MSG Message; if(!InitWindowsClass(hInstance)) return FALSE; if(!InitWindows(hInstance,nCmdShow)) return FALSE; while (GetMessage(&Message,0,0,0)) { TranslateMessage(&Message); DispatchMessage(&Message); } return Message.wParam; } long WINAPI WndProc(HWND hWnd,UINT iMessage,UINT wParam,LONG lParam) { HDC hDC; HBRUSH hBrush; HPEN hPen; int i; double b; double r; double p; PAINTSTRUCT PtStr; switch(iMessage) { case WM_PAINT: hDC=BeginPaint(hWnd,&PtStr); SetMapMode(hDC,MM_ANISOTROPIC); SetWindowOrgEx(hDC,-500,-300,NULL); POINT a[11]; POINT d[5]; a[0].x=R; a[0].y=0; POINT c[3]; POINT temp[5]; POINT tempR[5]; b=((double)R*sin(PI/10))/sin(126*PI/180); r=((double)b*sin(PI/10))/sin(126*PI/180); temp[0].x=r; temp[0].y=0; tempR[0].x=R; tempR[0].y=0; for(i=1;i<10;i++) { if(i%2==0) { a[i].x=R*cos(i*36*PI/180); a[i].y=R*sin(i*36*PI/180); temp[i/2].x=r*cos(i*36*PI/180); temp[i/2].y=r*sin(i*36*PI/180); tempR[i/2].x=R*cos(i*36*PI/180); tempR[i/2].y=R*sin(i*36*PI/180); } else { a[i].x=b*cos(i*36*PI/180); a[i].y=b*sin(i*36*PI/180); d[(i-1)/2].x=b*cos(i*36*PI/180); d[(i-1)/2].y=b*sin(i*36*PI/180); } } for(i=0;i<5;i++) { if((int)(n/(R-r))%2==0) p=R-n%(int)(R-r+1); else p=r+n%(int)(R-r+1); a[i*2].x=p*cos(i*72*PI/180); a[i*2].y=p*sin(i*72*PI/180); } Polyline(hDC,a,10); hBrush=(HBRUSH)CreateSolidBrush(RGB(250,0,0)); SelectObject(hDC,hBrush); Polygon(hDC,d,5); DeleteObject(hBrush); for(i=0;i<10;i++) { c[0].x=a[(i+10-1)%10].x; c[0].y=a[(i+10-1)%10].y; c[1].x=a[i].x; c[1].y=a[i].y; c[2].x=a[(i+10+1)%10].x; c[2].y=a[(i+10+1)%10].y; if(i==0) { hBrush=(HBRUSH)CreateSolidBrush(RGB(150,100,200)); hPen=CreatePen(PS_SOLID,2,RGB(255,255,0)); } else if((i+n)%3==1) { hBrush=(HBRUSH)CreateSolidBrush(RGB(50+i*15,0,0)); hPen=CreatePen(PS_SOLID,2,RGB(255,0,255)); } else if((i+n)%3==0) { hBrush=(HBRUSH)CreateSolidBrush(RGB(0,50+i*15,0)); hPen=CreatePen(PS_SOLID,2,RGB(0,255,255)); } else { hBrush=(HBRUSH)CreateSolidBrush(RGB(0,0,50+i*15)); hPen=CreatePen(PS_SOLID,2,RGB(255,255,0)); } SelectObject(hDC,hBrush); SelectObject(hDC,hPen); Polygon(hDC,c,3); } n++; DeleteObject(hPen); DeleteObject(hBrush); EndPaint(hWnd,&PtStr); if((n%(int)(R-r+1)==0)) Sleep(1000); Sleep(100); if(i<1000) InvalidateRect(hWnd,NULL,1); return 0; case WM_DESTROY: PostQuitMessage(0); return 0; default: return(DefWindowProc(hWnd,iMessage,wParam,lParam)); } } BOOL InitWindowsClass(HINSTANCE hInstance) { WNDCLASS WndClass; WndClass.cbClsExtra=0; WndClass.cbWndExtra=0; WndClass.hbrBackground=(HBRUSH)(GetStockObject(WHITE_BRUSH)); WndClass.hCursor=LoadCursor(NULL,IDC_ARROW); WndClass.hIcon=LoadCursor(NULL,"END"); WndClass.hInstance=hInstance; WndClass.lpfnWndProc=WndProc; WndClass.lpszClassName="WinFill"; WndClass.lpszMenuName=NULL; WndClass.style=CS_HREDRAW|CS_VREDRAW; return RegisterClass(&WndClass); } BOOL InitWindows(HINSTANCE hInstance,int nCmdShow) { HWND hWnd; hWnd=CreateWindow("WinFill","绘图",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,0,CW_USEDEFAULT, 0,NULL,NULL,hInstance,NULL); if(!hWnd) return FALSE; ShowWindow(hWnd,nCmdShow); UpdateWindow(hWnd); return TRUE; }