/// <summary>
/// 文本框失去焦点
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void rtbTitle_Leave(object sender, EventArgs e)
{
DataGridViewColumn myColumn = this.m_SortedColumnList[this.m_SelectedColumnIndex];
//定义事件参数
ColumnHeaderEditEventArgs myArgs = new ColumnHeaderEditEventArgs(myColumn, this.rtbTitle.Text.Trim());
if (this.EndingEdit != null)
{
this.EndingEdit(this, myArgs); //引发事件
if (myArgs.Cancel) //如果取消标志为true
{
this.rtbTitle.Focus(); //保持编辑状态
return;
}
}
this.rtbTitle.Visible = false;
if (myArgs.NewHeaderText.Length > 0)//不允许用空字符串作为标题
{
if (myColumn.HeaderText != myArgs.NewHeaderText)
{
//用事件参数里面的新标题，因为在事件处理程序里面可能修改新标题
myColumn.HeaderText = myArgs.NewHeaderText;
}
}
if (this.EndEdit != null)
{
this.EndEdit(this, myArgs);//引发事件
}
}
/// <summary>
/// 显示标题编辑效果
/// </summary>
private void ShowHeaderEdit()
{
if (this.BeginEdit != null)
{
ColumnHeaderEditEventArgs myArgs = new ColumnHeaderEditEventArgs(this.m_SortedColumnList[this.m_SelectedColumnIndex], "");
BeginEdit(this, myArgs);
if (myArgs.Cancel)
{
return;
}
}
int intColumnRelativeLeft = 0;
//第一列左边距，需要判断是否显示行标题
int intFirstColumnLeft = (this.m_TargetControl.RowHeadersVisible ? this.m_TargetControl.RowHeadersWidth + 1 : 1);
int intTargetX = this.m_TargetControl.Location.X, intTargetY = this.m_TargetControl.Location.Y, intTargetWidth = this.m_TargetControl.Width;
intColumnRelativeLeft = GetColumnRelativeLeft(this.m_SelectedColumnIndex);
if (intColumnRelativeLeft < this.m_ScrollValue)
{
this.rtbTitle.Location = new Point(intTargetX + intFirstColumnLeft, intTargetY + 1);
if (intColumnRelativeLeft + this.m_SortedColumnList[this.m_SelectedColumnIndex].Width > this.m_ScrollValue)
{
this.rtbTitle.Width = intColumnRelativeLeft + this.m_SortedColumnList[this.m_SelectedColumnIndex].Width - this.m_ScrollValue;
}
else
{
this.rtbTitle.Width = 0;
}
}
else
{
this.rtbTitle.Location = new Point(intColumnRelativeLeft + intTargetX - this.m_ScrollValue + intFirstColumnLeft, intTargetY + 1);
if (this.rtbTitle.Location.X + this.rtbTitle.Width > intTargetX + intTargetWidth)
{
int intWidth = intTargetX + intTargetWidth - this.rtbTitle.Location.X;
this.rtbTitle.Width = (intWidth >= 0 ? intWidth : 0);
}
else
{
this.rtbTitle.Width = this.m_SortedColumnList[this.m_SelectedColumnIndex].Width;
}
}
this.rtbTitle.Height = this.m_TargetControl.ColumnHeadersHeight - 1;
this.rtbTitle.Text = this.m_SortedColumnList[this.m_SelectedColumnIndex].HeaderText;
this.rtbTitle.SelectAll();
this.rtbTitle.Visible = true;
this.rtbTitle.Focus();
}
