#include #include #include #include LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM); int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInst,LPSTR lpszCmdLine,int nCmdShow) { HWND hwnd; MSG Msg; WNDCLASS wndclass; char lpszClassName[] = "基本绘图"