/// <summary>
/// Custom windows message pumping to fix frame stuck issue.
/// Normally, you need call this method in <see cref="Application.Idle" /> handler.
/// </summary>
public static void PumpMessage()
{
if (!Enabled)
{
return;
}
if (!TextServicesLoader.ServicesInstalled)
{
return;
}
bool result;
var msg = new NativeMethods.NativeMessage();
do
{
result = NativeMethods.PeekMessage(out msg, _windowHandle, 0, 0, NativeMethods.PM_REMOVE);
if (result)
{
NativeMethods.TranslateMessage(ref msg);
NativeMethods.DispatchMessage(ref msg);
}
} while (result);
NativeMethods.PostMessage(_windowHandle, NativeMethods.WM_NULL, IntPtr.Zero, IntPtr.Zero);
}
/// <inheritdoc />
public void FlushMessageQueue()
{
CheckInitialization();
if (_contextProvider.UiContext == SynchronizationContext.Current)
{
PumpMessages();
}
else
{
InvokeAsync(PumpMessages);
}
// This should remain a local function - messages should not be pumped out outside of FlushMessageQueue.
void PumpMessages()
{
var message = new NativeMethods.NativeMessage();
var handle = GCHandle.Alloc(message);
while (NativeMethods.PeekMessage(ref message, IntPtr.Zero, 0, 0, NativeMethods.PeekMessageRemoval.Remove))
{
NativeMethods.TranslateMessage(ref message);
NativeMethods.DispatchMessage(ref message);
}
handle.Free();
}
}