This example uses the WinQuerySysValue function to query the sizing border dimensions.

#define INCL_WINSYS
#include <OS2.H>

LONG vlXBorder, vlYBorder;

vlXBorder = WinQuerySysValue(HWND_DESKTOP,
                             SV_CXSIZEBORDER);
vlYBorder = WinQuerySysValue(HWND_DESKTOP,
                             SV_CYSIZEBORDER);