protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if ((e.Button & MouseButtons.Left) == MouseButtons.Left)
{
if (dragBeginRect != Rectangle.Empty && !dragBeginRect.Contains(e.X, e.Y))
{
IsDraging = true;
dragTargetIndex = this.IndexFromPoint(e.Location);
if (dragTargetIndex == -1)
{
if (e.Y < this.ViewInfo.GetItemRectangle(0).Bottom)
{
dragTargetIndex = 0;
}
}
CheckedListBoxViewInfo.CheckedItemInfo info = ViewInfo.GetItemByIndex(dragSourceIndex);
if (info != null)
{
info.PaintAppearance.ForeColor = Color.Red;
}
ViewInfo.MarkItem(dragTargetIndex, dragSourceIndex);
}
}
}
private void DrawCheckedItem(ListBoxDrawItemEventArgs e, CheckedListBoxViewInfo viewInfo, Image image)
{
CheckedListBoxViewInfo.CheckedItemInfo itInfo = viewInfo.GetItemByIndex(e.Index);
FillRectangle(e.Appearance, e.Cache, e.Bounds);
DrawCheckBox(itInfo.CheckArgs, e.Graphics, viewInfo);
DrawImage(itInfo.CheckArgs.GlyphRect, e.Graphics, image);
DrawString(itInfo, e.Appearance, e.Cache);
}
private void DrawString(CheckedListBoxViewInfo.CheckedItemInfo itInfo,
AppearanceObject appearance, GraphicsCache cache)
{
Rectangle textRect = new Rectangle(itInfo.TextRect.X + RepositoryItemCheckedImageComboBoxEdit.ImageWidth + 2,
itInfo.TextRect.Y, itInfo.TextRect.Width - RepositoryItemCheckedImageComboBoxEdit.ImageWidth - 2,
itInfo.TextRect.Height);
appearance.DrawString(cache, itInfo.Text, textRect);
}
protected override bool CanChangePressState(Point location, int selIndex, bool checkOnClick)
{
bool canChangePressState = true;
if (!this.ListBox.UseWholeItemToChangeCheckedStateByMouse)
{
CheckedListBoxViewInfo.CheckedItemInfo item = this.ViewInfo.GetItemByIndex(this.ViewInfo.HotItemIndex);
canChangePressState = item.CheckArgs.Bounds.Contains(location);
}
return(canChangePressState && base.CanChangePressState(location, selIndex, checkOnClick));
}
void CustomCheckedComboBoxEdit_DrawItem(object sender, ListBoxDrawItemEventArgs e)
{
if (listBoxControl != null && Properties.CheckStyle != DevExpress.XtraEditors.Controls.CheckStyles.Standard)
{
CheckedListBoxControl lbControl = sender as CheckedListBoxControl;
CheckedListBoxViewInfo vi = lbControl.GetViewInfo() as CheckedListBoxViewInfo;
CheckedListBoxViewInfo.CheckedItemInfo checkItemInfo = vi.GetItemByIndex(e.Index) as CheckedListBoxViewInfo.CheckedItemInfo;
checkItemInfo.CheckArgs.CheckStyle = Properties.CheckStyle;
if (Properties.CheckStyle == DevExpress.XtraEditors.Controls.CheckStyles.Radio)
{
return;
}
SetProperties(checkItemInfo);
}
}
protected void SetProperties(CheckedListBoxViewInfo.CheckedItemInfo checkItemInfo)
{
CheckObjectInfoArgs e = checkItemInfo.CheckArgs;
if (e.DefaultImages == null)
{
e.DefaultImages = LoadImages();
}
int style = (int)e.CheckStyle;
style = style * 4;
if (style > e.DefaultImages.Count - 1)
{
return;
}
e.PictureUnchecked = e.DefaultImages[style] as Bitmap;
e.PictureChecked = e.DefaultImages[style + 1] as Bitmap;
e.PictureGrayed = e.DefaultImages[style + 3] as Bitmap;
}
