private void MyToolStripDropDown_Opening(object sender, CancelEventArgs e)
{
try
{
myDropDownStatus = DropDownStatus.Opened;
DropDownOpened = true;
if (myToolStripDropDown != null)
{
//Win32API.OutputDebugStringA(this.pnlTopParent.Width.ToString() );
//myToolStripDropDown.Width = this.pnlTopParent.Width;
}
if (DropDownOpening != null)
{
DropDownOpening(this, e);
}
}
catch (Exception ex)
{
}
//throw new NotImplementedException();
}
private void MyToolStripDropDown_Closing(object sender, ToolStripDropDownClosingEventArgs e)
{
try
{
myDropDownStatus = DropDownStatus.Closing;
pboxArrow.Enabled = true;
DropDownOpened = false;
this.pboxArrow.Image = Properties.Resources.bArrow;
//判断当前选择的项
inputurl = "";
}
catch (Exception ex)
{
}
//如果弹出了下拉列表框没有选择一项，则直接返回
if (!bolDropDownMouseDown)
{
//return;
}
//选择了项，为下一次判断初始化为false
bolDropDownMouseDown = false;
try
{
//判断当前选择的项
foreach (myToolStripButton titem in myToolStripDropDown.Items)
{
//当前项，鼠标悬停，并不是真正意义上的点击选中
//Win32API.OutputDebugStringA(string.Format("所在项的 Pressed 为：{0}", titem.Pressed));
if (titem.Pressed)
{
inputurl = titem.Text;
if (!inputurl.Equals(ClearTips))//"清空地址栏下拉列表"
{
titem.IsSelected = true;
PressedItem = titem;
//触发选择了某项事件
if (SelectionChanged != null)
{
SelectionChanged(this, e);
}
}
else
{
titem.IsSelected = false;
}
}
else
{
titem.IsSelected = false;
}
//Win32API.OutputDebugStringA(string.Format("所在项的IsSelected为：{0}", titem.IsSelected));
}
//重新遍历一遍myToolStripDropDown.Items,设置当前地址为选定项
foreach (myToolStripButton titem in myToolStripDropDown.Items)
{
if (titem == PressedItem)
{
titem.IsSelected = true;
}
else
{
titem.IsSelected = false;
}
}
myToolStripDropDown.Update();
if ((string.IsNullOrEmpty(inputurl) || inputurl.Length <= 0))
{
return;
}
else if (inputurl.Equals(ClearTips)) //"清空地址栏下拉列表"
{
//Win32API.OutputDebugStringA(string.Format("在 myToolStripDropDown.Items中包含了:{0}个项目.", myToolStripDropDown.Items.Count ));
int iloopcount = myToolStripDropDown.Items.Count - 1;
for (int i = iloopcount; i >= 0; i--)
{
myToolStripButton item = myToolStripDropDown.Items[i] as myToolStripButton;
if (!item.Text.Equals(ClearTips))//"清空地址栏下拉列表"
{
myToolStripDropDown.Items.Remove(item);
//列表中删除该项
_items.Remove(item.Text);
}
}
myToolStripDropDown.Update();
}
else
{
this.chboxAddress.Text = inputurl;
inputurl = "";
}
//this.cboxChildbox.DroppedDown = true;
}
catch (Exception ex)
{
pboxArrow.Enabled = true;
}
//触发事件
try
{
if (DropDownClosed != null)
{
DropDownClosed(this, e);
}
}
catch (Exception ex)
{
}
//throw new NotImplementedException();
}
