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

You have another solution... You can pre calculate the border by calling a dedicated function while in WM_CREATE and WM_INITDIALOG messages. And refresh the values when you change your window style or when menu split in two rows.

RECT cRect, wRect, oRect;
GetWindowRect(hWnd, &wRect);
GetClientRect(hWnd, &cRect);
MapWindowPoints(hWnd, NULL, (LPPOINT)&cRect, 2);

oRect.left = cRect.left - wRect.left;
oRect.top = cRect.top - wRect.top;
oRect.right = wRect.right - cRect.right;
oRect.bottom = wRect.bottom - cRect.bottom;