Function CenterWindow

source/util.cpp:1742–1760

POINT CenterWindow(int aWidth, int aHeight)
// Given a the window's width and height, calculates where to position its upper-left corner
// so that it is centered EVEN IF the task bar is on the left side or top side of the window.
// This does not currently handle multi-monitor systems explicitly, since those calculations
// require API functions that don't exist in Win95/NT (and thus would have to be loaded
// dynamically to allow the program to launch).  Therefore, windows will likely wind up
// being centered across the total dimensions of all monitors, which usually results in
// half being on one monitor and half in the other.  This doesn't seem too terrible and
// might even be what the user wants in some cases (i.e. for really big windows).
{
	RECT rect;
	SystemParametersInfo(SPI_GETWORKAREA, 0, &rect, 0);  // Get desktop rect excluding task bar.
	// Note that rect.left will NOT be zero if the taskbar is on docked on the left.
	// Similarly, rect.top will NOT be zero if the taskbar is on docked at the top of the screen.
	POINT pt;
	pt.x = rect.left + (((rect.right - rect.left) - aWidth) / 2);
	pt.y = rect.top + (((rect.bottom - rect.top) - aHeight) / 2);
	return pt;
}