我想使用winAPI创建一个窗口:intWINAPIWinMain(HINSTANCEhInst,HINSTANCEhPrevInst,LPSTRlpCmdLine,intnShowCmd){WNDCLASSEXwClass;HWNDhWnd;wClass.cbClsExtra=NULL;wClass.cbSize=sizeof(WNDCLASSEX);wClass.cbWndExtra=NULL;wClass.hbrBackground=(HBRUSH)COLOR_WINDOW;wClass.hCursor=LoadCursor(NULL,IDC_ARROW);wClass.hIco