I'm using the following code to detect if a user is in tablet mode or not. I'm on a Surface Pro and when I decouple the keyboard and make the PC into a tablet, IsTabletMode returns true (which it should.) When I use the "Tablet Mode" button without decoupling the screen, IsTabletMode always returns false. Has anyone experienced this and How can I resolve it?
/*
* Credit to Cheese Lover
* Retrieved From: http://stackoverflow.com/questions/31153664/how-can-i-detect-when-window-10-enters-tablet-mode-in-a-windows-forms-applicatio
*/
public static class TabletPCSupport
{
private static readonly int SM_CONVERTIBLESLATEMODE = 0x2003;
private static readonly int SM_TABLETPC = 0x56;
private Boolean isTabletPC = false;
public Boolean SupportsTabletMode { get { return isTabletPC; }}
public Boolean IsTabletMode
{
get
{
return QueryTabletMode();
}
}
static TabletPCSupport ()
{
isTabletPC = (GetSystemMetrics(SM_TABLETPC) != 0);
}
[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto, EntryPoint = "GetSystemMetrics")]
private static extern int GetSystemMetrics (int nIndex);
private static Boolean QueryTabletMode ()
{
int state = GetSystemMetrics(SM_CONVERTIBLESLATEMODE);
return (state == 0) && isTabletPC;
}
}
Edit 2: The SM_TABLETPC is only supported by Windows XP Tablet PC Edition and Windows Vista. There doesn't seem to be any reference to Windows 10 here: https://msdn.microsoft.com/en-us/library/windows/desktop/ms700675(v=vs.85).aspx
You can use this: GetSystemMetrics(SM_CONVERTIBLESLATEMODE). A “0” returned means it is in tablet mode. A “1” returned means it is in non-tablet mode. https://software.intel.com/en-us/articles/how-to-write-a-2-in-1-aware-application
Can you replace the QueryTabletMode method with this:
private static Boolean QueryTabletMode ()
{
int state = GetSystemMetrics(SM_CONVERTIBLESLATEMODE);
return (state == 0);
}
Edit: You might need to check this periodically as there's no event to see if the PC's tablet mode was turned on