/// <summary>
/// 已重载:获得焦点,显示光标
/// </summary>
/// <param name="e"></param>
protected override void OnGotFocus(EventArgs e)
{
if (bolCaretCreated && myCaretBounds.IsEmpty == false && this.Focused)
{
myCaret.Create(0, myCaretBounds.Width, myCaretBounds.Height);
myCaret.SetPos(myCaretBounds.X, myCaretBounds.Y);
myCaret.Show();
}
base.OnGotFocus(e);
}
/// <summary>
/// 移动光标到新的光标区域
/// </summary>
/// <param name="vLeft">在视图中光标区域的左端位置</param>
/// <param name="vTop">在视图中光标区域的顶端位置</param>
/// <param name="vWidth">光标区域宽度</param>
/// <param name="vHeight">光标区域高度</param>
/// <returns>移动光标是否造成滚动</returns>
public bool MoveCaretTo(
int vLeft,
int vTop,
int vWidth,
int vHeight)
{
//return false;
if (this.IsUpdating)
{
return(false);
}
if (this.ForceShowCaret == false &&
this.Focused == false)
{
if (this.CaretCreated)
{
this.Caret.Hide();
}
//this.ScrollToView( vLeft , vTop , vWidth , vHeight );
return(false);
}
int height = GraphicsUnitConvert.Convert(
vHeight,
this.GraphicsUnit,
System.Drawing.GraphicsUnit.Pixel);
if (vWidth > 0 && vHeight > 0)
{
bolCaretCreated = this.Caret.Create(0, vWidth, height);
if (this.CaretCreated)
{
if (bolMoveCaretWithScroll)
{
this.ScrollToView(vLeft, vTop, vWidth, vHeight);
}
System.Drawing.Point p = this.ViewPointToClient(vLeft, vTop);
myCaret.SetPos(p.X, p.Y);
myCaret.Show();
Win32Imm imm = new Win32Imm(this);
if (imm.IsImmOpen())
{
imm.SetImmPos(p);
}
myCaretBounds = new System.Drawing.Rectangle(
p.X,
p.Y,
vWidth,
height);
if (this.MoveCaretWithScroll)
{
return(true);
}
}
}
return(false);
}