protected override void OnPaint(PaintEventArgs e)
{
try
{
if (m_bIsComboBox)
{
Row CurSel = m_RowWnd.CurrSel;
bool bHaveRow = m_RowWnd.CurrSel != null;
SolidBrush Backcolor;
if (m_AllowRowColorCombo && bHaveRow)
{
Backcolor = new SolidBrush(m_RowWnd.GetRowColor(ColorSelection.BackColor, m_RowWnd.CurrSel));
}
else
{
Backcolor = new SolidBrush(m_RowWnd.BackColor);
}
e.Graphics.FillRectangle(Backcolor, this.ClientRectangle);
Backcolor.Dispose();
Rectangle BtnRect = GetButtonRect();
if (UxThemeManager.VisualStylesEnabled())
{
IntPtr hDC = e.Graphics.GetHdc();
m_ThemeManager[this].DrawThemeBackground(UxThemeElements.COMBOBOX, hDC, (int)ComboBoxPart.DropDownButtonRight,
GetComboButtonState(), ref BtnRect, IntPtr.Zero);
e.Graphics.ReleaseHdc(hDC);
}
int nWidth = this.ClientRectangle.Width - BtnRect.Width - 2;
if (nWidth > 0)
{
int nHeight = this.ClientRectangle.Height - 2;
if (nHeight > 0)
{
bool bNeedSelColor = (IsDroppedDown || ContainsFocus) && !ReadOnly;
if (bNeedSelColor)
{
SolidBrush SelBackcolor;
if (m_AllowRowColorCombo && bHaveRow)
{
SelBackcolor = new SolidBrush(m_RowWnd.GetRowColor(ColorSelection.SelBackColor, CurSel));
}
else
{
SelBackcolor = new SolidBrush(SystemColors.Highlight);
}
e.Graphics.FillRectangle(SelBackcolor, 1, 1, nWidth, nHeight);
SelBackcolor.Dispose();
Pen p = new Pen(Color.DarkGray);
p.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot;
e.Graphics.DrawRectangle(p, 1, 1, nWidth, nHeight);
p.Dispose();
}
nWidth -= 4;
nHeight -= 8;
if (nWidth > 0 && nHeight > 0)
{
StringFormat sf = new StringFormat();
sf.FormatFlags = System.Drawing.StringFormatFlags.NoWrap;
sf.Trimming = System.Drawing.StringTrimming.EllipsisCharacter;
sf.Alignment = StringAlignment.Near;
sf.LineAlignment = StringAlignment.Center;
Brush ForText;
if (bHaveRow)
{
ForText = new SolidBrush(m_RowWnd.GetRowColor(bNeedSelColor ? ColorSelection.SelForeColor : ColorSelection.ForeColor, CurSel));
}
else
{
ForText = new SolidBrush(bNeedSelColor ? SystemColors.HighlightText : this.ForeColor);
}
e.Graphics.DrawString(bHaveRow ? CurSel.ToString(m_strComboFormat) : m_strComboText,
this.Font, ForText, new Rectangle(5, 5, nWidth, nHeight), sf);
ForText.Dispose();
sf.Dispose();
}
}
}
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
base.OnPaint(e);
}
