In the Win32 folder, in Window::SetPositionRelative() there is the code:
// Retrieve desktop bounds and make sure window popup's origin isn't left-top
of the screen.
RECT rcDesktop = {0, 0, 0, 0};
#ifdef SM_XVIRTUALSCREEN
rcDesktop.left = ::GetSystemMetrics(SM_XVIRTUALSCREEN);
rcDesktop.top = ::GetSystemMetrics(SM_YVIRTUALSCREEN);
rcDesktop.right = rcDesktop.left + ::GetSystemMetrics(SM_CXVIRTUALSCREEN);
rcDesktop.bottom = rcDesktop.top + ::GetSystemMetrics(SM_CYVIRTUALSCREEN);
#endif
The effect of this is that if you are using VC6 out of the box (even SP6),
where SM_XVIRTUALSCREEN is not defined, your call tips are limited to the
primary monitor. If the code were changed to:
#ifndef SM_XVIRTUALSCREEN
#define SM_XVIRTUALSCREEN 76
#define SM_YVIRTUALSCREEN 77
#define SM_CXVIRTUALSCREEN 78
#define SM_CYVIRTUALSCREEN 79
#endif
rcDesktop.left = ::GetSystemMetrics(SM_XVIRTUALSCREEN);
rcDesktop.top = ::GetSystemMetrics(SM_YVIRTUALSCREEN);
rcDesktop.right = rcDesktop.left + ::GetSystemMetrics(SM_CXVIRTUALSCREEN);
rcDesktop.bottom = rcDesktop.top + ::GetSystemMetrics(SM_CYVIRTUALSCREEN);
Then this would work on all platforms that support the extra SM_ values, and be
unchanged on platforms that do not as GetSystemMetrics returns 0 for unknown
requests.
The entire code could be reduce further as rcDesktop.right and rcDesktop.bottom
are not used:
#ifndef SM_XVIRTUALSCREEN
#define SM_XVIRTUALSCREEN 76
#define SM_YVIRTUALSCREEN 77
#endif
rcDesktop.left = ::GetSystemMetrics(SM_XVIRTUALSCREEN);
rcDesktop.top = ::GetSystemMetrics(SM_YVIRTUALSCREEN);
Greg Smith
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