public static void ToggleMouseCursorVisibility(MainWindow frmMain, Tools.Boolstate forced = Tools.Boolstate.Indeterminate)
{
if (((forced == Tools.Boolstate.True) && (!MouseCursorIsHidden)) || ((forced == Tools.Boolstate.False) && MouseCursorIsHidden))
{
return;
}
if ((forced == Tools.Boolstate.True) || MouseCursorIsHidden)
{
Native.SetSystemCursor(hCursorOriginal, OCR_SYSTEM_CURSORS.OCR_NORMAL);
Native.DestroyIcon(hCursorOriginal);
hCursorOriginal = IntPtr.Zero;
MouseCursorIsHidden = false;
}
else
{
string fileName = null;
try
{
hCursorOriginal = frmMain.Cursor.CopyHandle();
if (curInvisibleCursor == null)
{
// Can't load from a memory stream because the constructor new Cursor() does not accept animated or non-monochrome cursors
fileName = Path.GetTempPath() + Guid.NewGuid().ToString() + ".cur";
using (FileStream fileStream = File.Open(fileName, FileMode.Create))
{
using (MemoryStream ms = new MemoryStream(Properties.Resources.blank))
{
ms.WriteTo(fileStream);
}
fileStream.Flush();
fileStream.Close();
}
curInvisibleCursor = new Cursor(Native.LoadCursorFromFile(fileName));
}
Native.SetSystemCursor(curInvisibleCursor.CopyHandle(), OCR_SYSTEM_CURSORS.OCR_NORMAL);
MouseCursorIsHidden = true;
}
catch
{
// swallow exception and assume cursor set failed
}
finally
{
try
{
if (!string.IsNullOrEmpty(fileName))
{
if (File.Exists(fileName))
{
File.Delete(fileName);
}
}
}
catch { }
}
}
}
