GetSystemMetrics

获得屏幕尺寸大小

// 获得屏幕的宽度
int scrX=GetSystemMetrics(SM_CXSCREEN);
// 获得屏幕的高度
int scrY = GetSystemMetrics(SM_CYSCREEN);

 

// 获得有效区域的桌面大小(除去任务栏)
RECT rect;
SystemParametersInfo(SPI_GETWORKAREA, 0, &rect, 0);
int cx = rect.right - rect.left;
int cy = rect.bottom - rect.top;