protected override void Paint(Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates elementState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
{
//此段代码主要解决xp下，如果鼠标默认在按钮列上，按钮的默认绘制样式问题
if (this.m_firstDraw)
{
this.m_firstDraw = false;
this.m_curBtnState = this.Enabled ? PushButtonState.Normal : PushButtonState.Disabled;
}
// 是否需要重绘单元格的背景颜色
m_brushCellBack = this.DataGridView.SelectedCells.Contains(this) ?
new SolidBrush(cellStyle.SelectionBackColor) : new SolidBrush(cellStyle.BackColor);
graphics.FillRectangle(m_brushCellBack, cellBounds.X, cellBounds.Y, cellBounds.Width, cellBounds.Height);
//计算button的区域
m_buttonRegion = RectangleCommon.GetSmallRectOfRectangle(cellBounds, this.Size, out this.m_absBtnRegion);
//绘制按钮
if (m_enabled)
{
this.InternalDrawButton(graphics, m_buttonRegion, m_curBtnState, Text);
}
else
{
this.InternalDrawButton(graphics, m_buttonRegion, PushButtonState.Disabled, Text);
}
// 填充单元格的边框
base.PaintBorder(graphics, clipBounds, cellBounds, cellStyle, advancedBorderStyle);
}
/// <summary>
/// 是否在Button按钮区域
/// </summary>
/// <param name="p"></param>
/// <returns></returns>
protected bool IsInRegion(Point p, int columnIndex, int rowIndex)
{
Rectangle cellBounds = DataGridView[columnIndex, rowIndex].ContentBounds;
RectangleCommon.GetSmallRectOfRectangle(cellBounds, this.Size, out this.m_absBtnRegion);
return(this.m_absBtnRegion.Contains(p));
}
protected override void Paint(System.Drawing.Graphics graphics, System.Drawing.Rectangle clipBounds, System.Drawing.Rectangle cellBounds, int rowIndex, DataGridViewElementStates dataGridViewElementState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
{
base.Paint(graphics, clipBounds, cellBounds, rowIndex, dataGridViewElementState, @"", @"", errorText, cellStyle, advancedBorderStyle, paintParts);
this.m_chkboxRegion = RectangleCommon.GetSmallRectOfRectangle(cellBounds, CheckBoxRenderer.GetGlyphSize(graphics, CheckBoxState.UncheckedNormal), out m_absChkboxRegion);
this.RenderCheckBox(graphics);
}