protected override void OnMouseMove(MouseEventArgs e)
{
//如果鼠标的左键没有按下，重置HistTest
if (e.Button != MouseButtons.Left)
{
_histTest = HistTest.None;
}
Rectangle collapseRect = CollapseRect;
Point mousePoint = e.Location;
//鼠标在Button矩形里，并且不是在拖动
if (collapseRect.Contains(mousePoint) &&
_histTest != HistTest.Spliter)
{
base.Capture = false;
SetCursor(Cursors.Hand);
MouseState = SplitContainer.ControlPaintEx.ControlState.Hover;
return;
}//鼠标在分隔栏矩形里
if (base.SplitterRectangle.Contains(mousePoint))
{
MouseState = SplitContainer.ControlPaintEx.ControlState.Normal;
//如果已经在按钮按下了鼠标或者已经收缩，就不允许拖动了
if (_histTest == HistTest.Button ||
(_collapsePanel != CollapsePanel.None &&
_spliterPanelState == SpliterPanelState.Collapsed))
{
base.Capture = false;
base.Cursor = Cursors.Default;
return;
}
//鼠标没有按下，设置Split光标
if (_histTest == HistTest.None &&
!base.IsSplitterFixed)
{
SetCursor(base.Orientation == Orientation.Horizontal ? Cursors.HSplit : Cursors.VSplit);
return;
}
}
MouseState = SplitContainer.ControlPaintEx.ControlState.Normal;
//正在拖动分隔栏
if (_histTest == HistTest.Spliter &&
!base.IsSplitterFixed)
{
SetCursor(base.Orientation == Orientation.Horizontal ? Cursors.HSplit : Cursors.VSplit);
base.OnMouseMove(e);
return;
}
base.Cursor = Cursors.Default;
base.OnMouseMove(e);
}
protected override void OnMouseLeave(EventArgs e)
{
base.Cursor = Cursors.Default;
MouseState = SplitContainer.ControlPaintEx.ControlState.Normal;
base.OnMouseLeave(e);
}
