window border width and height in Win32 - how do I get it?

Question

      ::GetSystemMetrics (SM_CYBORDER)

...comes back with 1 and I know the title bar is taller than ONE pixel :/

I also tried:

     RECT r;
         


        

Answer 1

int border_thickness = GetSystemMetrics(SM_CXSIZEFRAME);

In fact, the above result might be equal to:

GetClientRect(hWnd, &rcClient); 
GetWindowRect(hWnd, &rcWind); 
int border_thickness = ((rcWind.right - rcWind.left) - rcClient.right) / 2; 

but GetSystemMetrics(SM_CXSIZEFRAME) is easier to be used.