/// <summary>
/// Should a mouse down at the provided point cause an end to popup tracking.
/// </summary>
/// <param name="m">Original message.</param>
/// <param name="pt">Client coordinates point.</param>
/// <returns>True to end tracking; otherwise false.</returns>
public virtual bool DoesCurrentMouseDownEndAllTracking(Message m, Point pt)
{
bool endTracking = !ClientRectangle.Contains(pt);
// The mouse is not over our client area but the focus is
if (endTracking && ContainsFocus)
{
// Get the window handle of the window under this screen point
Point screenPt = PointToScreen(pt);
PI.POINT screenPIPt = new PI.POINT();
screenPIPt.x = screenPt.X;
screenPIPt.y = screenPt.Y;
IntPtr hWnd = PI.WindowFromPoint(screenPIPt);
// Assuming we got back a valid window handle
if (hWnd != IntPtr.Zero)
{
StringBuilder className = new StringBuilder(256);
int length = PI.GetClassName(hWnd, className, className.Capacity);
// If we got back a valid name
if (length > 0)
{
// If let the message occur as it is being pressed on a combo box
// drop down list and so it will process the message appropriately
if (className.ToString() == "ComboLBox")
{
endTracking = false;
}
}
}
}
return(endTracking);
}
private bool ProcessMouseMoveWithCMS(ref Message m)
{
if (_current == null)
{
return(false);
}
// Convert the client position to screen point
Point screenPt = CommonHelper.ClientMouseMessageToScreenPt(m);
// Convert from a class to a structure
PI.POINT screenPIPt = new PI.POINT();
screenPIPt.x = screenPt.X;
screenPIPt.y = screenPt.Y;
// Get the window handle of the window under this screen point
IntPtr hWnd = PI.WindowFromPoint(screenPIPt);
// Is the window handle that of the currently tracking popup
if (_current.Handle == hWnd)
{
return(true);
}
// Search all the stacked popups for any that match the window handle
VisualPopup[] popups = _stack.ToArray();
for (int i = 0; i < popups.Length; i++)
{
if (!popups[i].IsDisposed)
{
if (popups[i].Handle == hWnd)
{
return(true);
}
}
}
// Mouse move is not over a popup, so allow it
return(false);
}
internal static extern IntPtr WindowFromPoint(PI.POINT pt);