|
static private HIWORD ( |
||
| value | ||
| return | int | |
/// <summary>
/// Process Windows-based messages.
/// </summary>
/// <param name="m">A Windows-based message.</param>
protected override void WndProc(ref Message m)
{
// We need to snoop the need to show a context menu
if (m.Msg == PI.WM_CONTEXTMENU)
{
// Only interested in overriding the behavior when we have a krypton context menu...
if (KryptonContextMenu != null)
{
// Extract the screen mouse position (if might not actually be provided)
Point mousePt = new Point(PI.LOWORD(m.LParam), PI.HIWORD(m.LParam));
// If keyboard activated, the menu position is centered
if (((int)((long)m.LParam)) == -1)
{
mousePt = new Point(Width / 2, Height / 2);
}
else
{
mousePt = PointToClient(mousePt);
// Mouse point up and left 1 pixel so that the mouse overlaps the top left corner
// of the showing context menu just like it happens for a ContextMenuStrip.
mousePt.X -= 1;
mousePt.Y -= 1;
}
// If the mouse posiiton is within our client area
if (ClientRectangle.Contains(mousePt))
{
// Show the context menu
KryptonContextMenu.Show(this, PointToScreen(mousePt));
// We eat the message!
return;
}
}
}
if (!IsDisposed)
{
base.WndProc(ref m);
}
}
private bool ProcessNonClientMouseDown(ref Message m)
{
// Extract the x and y mouse position from message
Point screenPt = new Point(PI.LOWORD((int)m.LParam), PI.HIWORD((int)m.LParam));
// Ask the popup if this message causes the entire stack to be killed
if (_current.DoesCurrentMouseDownEndAllTracking(m, ScreenPtToClientPt(screenPt)))
{
EndAllTracking();
}
// Do any of the current popups want the mouse down to be eaten?
bool processed = false;
if (_current != null)
{
processed = _current.DoesMouseDownGetEaten(m, screenPt);
if (!processed)
{
// Search from end towards the front, the last entry is the most recent 'Push'
VisualPopup[] popups = _stack.ToArray();
for (int i = 0; i < popups.Length; i++)
{
// Ignore disposed popups
VisualPopup popup = popups[i];
if (!popup.IsDisposed)
{
processed = popup.DoesMouseDownGetEaten(m, screenPt);
if (processed)
{
break;
}
}
}
}
}
return(processed);
}