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[X11] Warn when XI2Mouse is not supported.

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Without the XI2 extension, mouse support will suffer significantly.
More specifically, low-level mouse events will not be available.
This commit is contained in:
thefiddler 2014-05-13 23:34:27 +02:00
parent 3febb4dda0
commit 452d61bc60
1 changed files with 23 additions and 15 deletions
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38
Source/OpenTK/Platform/X11/XI2Mouse.cs
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@ -156,30 +156,38 @@ namespace OpenTK.Platform.X11
// If a display is not specified, the default display is used.
internal static bool IsSupported(IntPtr display)
{
if (display == IntPtr.Zero)
try
{
display = API.DefaultDisplay;
}
using (new XLock(display))
{
int major, ev, error;
if (Functions.XQueryExtension(display, "XInputExtension", out major, out ev, out error) != 0)
if (display == IntPtr.Zero)
{
XIOpCode = major;
display = API.DefaultDisplay;
}
int minor = 2;
while (minor >= 0)
using (new XLock(display))
{
int major, ev, error;
if (Functions.XQueryExtension(display, "XInputExtension", out major, out ev, out error) != 0)
{
if (XI.QueryVersion(display, ref major, ref minor) == ErrorCodes.Success)
XIOpCode = major;
int minor = 2;
while (minor >= 0)
{
XIVersion = major * 100 + minor * 10;
return true;
if (XI.QueryVersion(display, ref major, ref minor) == ErrorCodes.Success)
{
XIVersion = major * 100 + minor * 10;
return true;
}
minor--;
}
minor--;
}
}
}
catch (DllNotFoundException e)
{
Debug.Print(e.ToString());
Debug.Print("XInput2 extension not supported. Mouse support will suffer.");
}
return false;
}