/// <summary>
/// draw line
/// </summary>
/// <param name="hdc"></param>
/// <param name="start"></param>
/// <param name="end"></param>
/// <param name="pen"></param>
public void DrawLine(IntPtr hdc, Point start, Point end, IntPtr pen)
{
NativeWindowCommon.MoveToEx(hdc, start.X, start.Y, IntPtr.Zero);
NativeWindowCommon.SelectObject(hdc, pen);
NativeWindowCommon.LineTo(hdc, end.X, end.Y);
}
/// <summary>
/// drow sort marking on the column
/// </summary>
/// <param name="hdc"></param>
/// <param name="rc"></param>
/// <param name="gr"></param>
void DrawSortMark(IntPtr hdc, NativeWindowCommon.RECT rc, Graphics gr)
{
int iconWidth = SortIconWidth();
int topBottomMargin = (this.Header.Height - iconWidth) / 2;
int iconHeight = SortIconHeight();
NativeWindowCommon.POINT[] points = new NativeWindowCommon.POINT[3];
if (SortMark == HeaderSectionSortMarks.Up)
{
points[0].x = rc.right - Header.SORT_ICON_LEFT_RIGHT_MARGIN;
points[0].y = (rc.bottom + iconHeight) / 2;
// center point
points[1].x = points[0].x - iconWidth / 2;
points[1].y = points[0].y - iconHeight;
// left point
points[2].x = points[0].x - iconWidth;
points[2].y = points[0].y;
}
else if (SortMark == HeaderSectionSortMarks.Down)
{
//right
points[0].x = rc.right - Header.SORT_ICON_LEFT_RIGHT_MARGIN;
points[0].y = (rc.bottom - iconHeight) / 2;
// center point
points[1].x = points[0].x - iconWidth / 2;
points[1].y = points[0].y + iconHeight;
// left point
points[2].x = points[0].x - iconWidth;
points[2].y = points[0].y;
}
#if !PocketPC
if (Application.RenderWithVisualStyles)
{
//draw XP style sort triangle
NativeWindowCommon.SelectObject(hdc, Header.SortBrush);
NativeWindowCommon.SelectObject(hdc, Header.SortPen);
NativeWindowCommon.Polygon(hdc, points, 3);
}
else
#endif
{
//draw windows 2000 style sort triangle
Point[] points1 = new Point[3]
{
new Point(points[0].x, points[0].y),
new Point(points[1].x, points[1].y),
new Point(points[2].x, points[2].y)
};
NativeWindowCommon.MoveToEx(hdc, points1[0].X, points1[0].Y, IntPtr.Zero);
NativeWindowCommon.SelectObject(hdc, Header.WhitePen);
NativeWindowCommon.LineTo(hdc, points1[1].X, points1[1].Y);
NativeWindowCommon.SelectObject(hdc, Header.ButtonShadowPen);
NativeWindowCommon.LineTo(hdc, points1[2].X, points1[2].Y);
if (SortMark == HeaderSectionSortMarks.Up)
{
NativeWindowCommon.SelectObject(hdc, Header.WhitePen);
}
else
{
NativeWindowCommon.SelectObject(hdc, Header.ButtonShadowPen);
}
NativeWindowCommon.LineTo(hdc, points1[0].X, points1[0].Y);
}
}