internal void CloseRedArrowIndicator()
{
if (redArrowIndicatorDragHelper != null)
{
redArrowIndicatorDragHelper.EndDrag();
redArrowIndicatorDragHelper.DragWindow.Paint -= new PaintEventHandler(DragWindow_Paint);
redArrowIndicatorDragHelper = null;
}
redArrowOpend = false;
}
internal void OpenRedArrowIndicator()
{
if (!ShouldOpenArrow(false))
{
return;
}
redArrowOpend = true;
Bitmap bm = CreateRedArrowIndicatorBitmap();
redArrowIndicatorDragHelper = new DragFieldHelper();
redArrowIndicatorDragHelper.StartDrag(bm, hiddenPoint, DragDropEffects.Move);
// There is always a small black rectangle at the lower right-corner. Drawing
// over the previously painted BackgroundImage resolves this issue.
redArrowIndicatorDragHelper.DragWindow.Paint += new PaintEventHandler(DragWindow_Paint);
if (!DragFieldMouseControllerBase.SupportsTransparentForm())
{
//GridRangeInfo rows = GetRangeOfColumnHeaderSection();
int rowIndex = grid.Model.RowCount > 1 ? 2 : 0;//rows.Top;
GridStyleInfo style = grid.Model[rowIndex, 0];
Color backColor = Color.FromArgb(255, style.Interior.BackColor);
redArrowIndicatorDragHelper.DragWindow.BackColor = backColor;
}
}