void StartPeekMessageLoop()
{
// Create an object for storing windows message information
Win32.MSG msg = new Win32.MSG();
bool leaveMsg = false;
// Process messages until exit condition recognised
while (!exitLoop)
{
// Suspend thread until a windows message has arrived
if (WindowsAPI.WaitMessage())
{
// Take a peek at the message details without removing from queue
while (!exitLoop && WindowsAPI.PeekMessage(ref msg, 0, 0, 0, (int)Win32.PeekMessageFlags.PM_NOREMOVE))
{
//Console.WriteLine("Track {0} {1}", this.Handle, ((Msg)msg.message).ToString());
//Console.WriteLine("Message is for {0 }", msg.hwnd);
// Mouse was pressed in a window of this application
if ((msg.message == (int)Msg.WM_LBUTTONDOWN) ||
(msg.message == (int)Msg.WM_MBUTTONDOWN) ||
(msg.message == (int)Msg.WM_RBUTTONDOWN) ||
(msg.message == (int)Msg.WM_NCLBUTTONDOWN) ||
(msg.message == (int)Msg.WM_NCMBUTTONDOWN) ||
(msg.message == (int)Msg.WM_NCRBUTTONDOWN))
{
// Is the mouse event for this popup window?
if (msg.hwnd != this.Handle && !IsChild(msg.hwnd))
{
// No, then we need to exit the popup menu tracking
exitLoop = true;
// DO NOT process the message, leave it on the queue
// and let the real destination window handle it.
leaveMsg = true;
}
}
else
{
// Mouse move occured
if (msg.message == (int)Msg.WM_MOUSEMOVE)
{
// Is the mouse event for this popup window?
if ((msg.hwnd != this.Handle && !IsChild(msg.hwnd)))
{
// Eat the message to prevent the destination getting it
Win32.MSG eat = new Win32.MSG();
WindowsAPI.GetMessage(ref eat, 0, 0, 0);
// Do not attempt to pull a message off the queue as it has already
// been eaten by us in the above code
leaveMsg = true;
}
}
}
// Should the message we pulled from the queue?
if (!leaveMsg)
{
if (WindowsAPI.GetMessage(ref msg, 0, 0, 0))
{
WindowsAPI.TranslateMessage(ref msg);
WindowsAPI.DispatchMessage(ref msg);
}
}
else
{
leaveMsg = false;
}
}
}
}
}
