protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (DesignMode)
{
return;
}
if (K_ResizeAble)
{
bool isChildUnderMouse = GetChildAtPoint(e.Location) != null;
if (e.Location.X < BORDER_WIDTH && e.Location.Y > Height - BORDER_WIDTH && !isChildUnderMouse && !_formIsMaximized)
{
_resizeDir = KResizeDirection.BottomLeft;
Cursor = Cursors.SizeNESW;
}
else if (e.Location.X < BORDER_WIDTH && !isChildUnderMouse && !_formIsMaximized)
{
_resizeDir = KResizeDirection.Left;
Cursor = Cursors.SizeWE;
}
else if (e.Location.X > Width - BORDER_WIDTH && e.Location.Y > Height - BORDER_WIDTH && !isChildUnderMouse && !_formIsMaximized)
{
_resizeDir = KResizeDirection.BottomRight;
Cursor = Cursors.SizeNWSE;
}
else if (e.Location.X > Width - BORDER_WIDTH && !isChildUnderMouse && !_formIsMaximized)
{
_resizeDir = KResizeDirection.Right;
Cursor = Cursors.SizeWE;
}
else if (e.Location.Y > Height - BORDER_WIDTH && !isChildUnderMouse && !_formIsMaximized)
{
_resizeDir = KResizeDirection.Bottom;
Cursor = Cursors.SizeNS;
}
else
{
_resizeDir = KResizeDirection.None;
if (_resizeCursors.Contains(Cursor))
{
Cursor = Cursors.Default;
}
}
}
UpdateButtons(e);
}
/// <summary>
/// 改变窗体的大小：拖动边框改变
/// </summary>
/// <param name="direction">改变的方向</param>
private void ResizeForm(KResizeDirection direction)
{
if (DesignMode)
{
return;
}
int dir = -1;
switch (direction)
{
case KResizeDirection.BottomLeft:
dir = HT_BOTTOMLEFT;
break;
case KResizeDirection.Left:
dir = HT_LEFT;
break;
case KResizeDirection.Right:
dir = HT_RIGHT;
break;
case KResizeDirection.BottomRight:
dir = HT_BOTTOMRIGHT;
break;
case KResizeDirection.Bottom:
dir = HT_BOTTOM;
break;
}
ReleaseCapture();
if (dir != -1)
{
SendMessage(Handle, WM_NCLBUTTONDOWN, dir, 0);
}
}
