private void UpdateUpDown()
{
if (bUpDown)
{
if (CustomWin32.IsWindowVisible(scUpDown.Handle))
{
Rectangle rect = new Rectangle();
CustomWin32.GetClientRect(scUpDown.Handle, ref rect);
CustomWin32.InvalidateRect(scUpDown.Handle, ref rect, true);
}
}
}
internal void DrawControl(Graphics g)
{
if (!Visible)
{
return;
}
Rectangle TabControlArea = this.ClientRectangle;
Rectangle TabArea = this.DisplayRectangle;
// fill client area
RenderControlBackground(g, TabControlArea);
// draw panel border
int nDelta = SystemInformation.Border3DSize.Width;
TabArea.Inflate(nDelta, nDelta);
//RenderTabPanelBorder(g, TabArea);
// clip region for drawing tabs
Region rsaved = g.Clip;
int nWidth = TabArea.Width + nMargin;
if (bUpDown)
{
// exclude updown control for painting
if (CustomWin32.IsWindowVisible(scUpDown.Handle))
{
Rectangle rupdown = new Rectangle();
CustomWin32.GetWindowRect(scUpDown.Handle, ref rupdown);
Rectangle rupdown2 = this.RectangleToClient(rupdown);
nWidth = rupdown2.X;
}
}
// draw tabs
for (int i = 0; i < this.TabCount; i++)
{
DrawTab(g, this.TabPages[i], i);
}
g.Clip = rsaved;
//----------------------------
//----------------------------
// draw background to cover flat border areas
//覆盖tabpage和控件边框的空隙
//if (this.SelectedTab != null)
//{
// TabPage tabPage = this.SelectedTab;
// Color color = tabPage.BackColor;
// Pen border = new Pen(color);
// TabArea.Offset(1, 1);
// TabArea.Width -= 2;
// TabArea.Height -= 2;
// g.DrawRectangle(border, TabArea);
// TabArea.Width -= 1;
// TabArea.Height -= 1;
// g.DrawRectangle(border, TabArea);
// border.Dispose();
//}
//----------------------------
//如果边框是两条线，则这里就只需要覆盖底线和右边的竖线，根据实际观察得知
//if (this.SelectedTab != null)
//{
// TabPage tabPage = this.SelectedTab;
// Color color = tabPage.BackColor;
// Pen border = new Pen(color);
// g.DrawLine(border, new Point(TabArea.X + 2, TabArea.Bottom - 2)
// , new Point(TabArea.Right - 2, TabArea.Bottom - 2));
// g.DrawLine(border, new Point(TabArea.Right - 2, TabArea.Bottom - 2)
// , new Point(TabArea.Right - 2, TabArea.Y + 2));
// border.Dispose();
//}
}
