Polygon和Polyline

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Polyline是画线

Polygon是画多边形

#include <windows.h>/*********************Polygon和Polyline邱于涵2016年12月9日23:15:18****************/LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow){static TCHAR szAppName[] = TEXT("MyWindows");HWND hwnd;MSG msg;WNDCLASS wndclass;wndclass.style = CS_HREDRAW | CS_VREDRAW;wndclass.lpfnWndProc = WndProc;wndclass.cbClsExtra = 0;wndclass.cbWndExtra = 0;wndclass.hInstance = hInstance;wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);wndclass.lpszMenuName = NULL;wndclass.lpszClassName = szAppName;if (!RegisterClass(&wndclass)){MessageBox(NULL, TEXT("这个程序需要在 Windows NT 才能执行！"), szAppName, MB_ICONERROR);return 0;}hwnd = CreateWindow(szAppName,TEXT("涵涵工作室"),WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);ShowWindow(hwnd, iCmdShow);UpdateWindow(hwnd);while (GetMessage(&msg, NULL, 0, 0)){TranslateMessage(&msg);DispatchMessage(&msg);}return msg.wParam;}LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam){HDC hdc;PAINTSTRUCT ps;RECT rect;POINT apt1[4] = { 100, 100, 200, 100, 200, 200, 100, 200 };POINT apt2[4] = { 300, 100, 400, 100, 400, 200, 300, 200 };switch (message){case WM_PAINT:hdc = BeginPaint(hwnd, &ps);Polygon(hdc, apt1, 4); //Polygon会自动连接到起点（形成封闭图形）Polyline(hdc, apt2, 4); //Polyline不会自动连接到起点EndPaint(hwnd, &ps);return 0;case WM_DESTROY:PostQuitMessage(0);return 0;}return DefWindowProc(hwnd, message, wParam, lParam);}

多变形填充，就可以看出来了~~

#include <windows.h>/*********************Polygon和Polyline邱于涵2016年12月9日23:15:18****************/LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow){static TCHAR szAppName[] = TEXT("MyWindows");HWND hwnd;MSG msg;WNDCLASS wndclass;wndclass.style = CS_HREDRAW | CS_VREDRAW;wndclass.lpfnWndProc = WndProc;wndclass.cbClsExtra = 0;wndclass.cbWndExtra = 0;wndclass.hInstance = hInstance;wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);wndclass.lpszMenuName = NULL;wndclass.lpszClassName = szAppName;if (!RegisterClass(&wndclass)){MessageBox(NULL, TEXT("这个程序需要在 Windows NT 才能执行！"), szAppName, MB_ICONERROR);return 0;}hwnd = CreateWindow(szAppName,TEXT("涵涵工作室"),WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);ShowWindow(hwnd, iCmdShow);UpdateWindow(hwnd);while (GetMessage(&msg, NULL, 0, 0)){TranslateMessage(&msg);DispatchMessage(&msg);}return msg.wParam;}LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam){HDC hdc;PAINTSTRUCT ps;RECT rect;POINT apt1[4] = { 100, 100, 200, 100, 200, 200, 100, 200 };//设置五个 手动连回去POINT apt2[5] = { 300, 100, 400, 100, 400, 200, 300, 200 ,300,100};HBRUSH cBrush, pBrush;switch (message){case WM_PAINT:hdc = BeginPaint(hwnd, &ps);cBrush = CreateSolidBrush(RGB(0, 255, 0));//创建画刷pBrush = SelectObject(hdc,cBrush); //选择Polygon(hdc, apt1, 4); //Polygon会自动连接到起点（形成封闭图形）Polyline(hdc, apt2, 5); //Polyline不会自动连接到起点SelectObject(hdc, pBrush);//选回去（养成好习惯）DeleteObject(cBrush); //删除EndPaint(hwnd, &ps);return 0;case WM_DESTROY:PostQuitMessage(0);return 0;}return DefWindowProc(hwnd, message, wParam, lParam);}

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