【转】如何对Outlook添加右键菜单

转帖地址：http://ming8463.blog.hexun.com/21765682_d.html

如果你用VSTO2005开发有以下办法添加右键菜单：
Outlook.ExplorerClass _Explorer = null;
Office.CommandBars _CommandBars = null;
object _Missing = System.Reflection.Missing.Value;
Office.CommandBarButton _ContextMenuButton = null;
private void ThisApplication_Startup(object sender, System.EventArgs e)
{

_Explorer = (Outlook.ExplorerClass)this.ActiveExplorer();
_CommandBars = _Explorer.CommandBars;
_CommandBars.OnUpdate += new Microsoft.Office.Core._CommandBarsEvents_OnUpdateEventHandler(_CommandBars_OnUpdate);



}
void _CommandBars_OnUpdate()
{
foreach (Office.CommandBar bar in _CommandBars)
{
if (bar.Name == "Context Menu")
{
// we found the context menu
Office.MsoBarProtection oldProtection = bar.Protection;

bar.Protection = Microsoft.Office.Core.MsoBarProtection.msoBarNoProtection;

_ContextMenuButton = (Office.CommandBarButton)bar.Controls.Add(Office.MsoControlType.msoControlButton, 1, _Missing, _Missing, true);
_ContextMenuButton.Style = Microsoft.Office.Core.MsoButtonStyle.msoButtonIconAndCaption;
_ContextMenuButton.TooltipText = "Isabella's Context menu....";
_ContextMenuButton.BeginGroup = true;
_ContextMenuButton.Caption = "Click me...";
_ContextMenuButton.Visible = true;

_ContextMenuButton.Click += new Microsoft.Office.Core._CommandBarButtonEvents_ClickEventHandler(_ContextMenuButton_Click);

bar.Protection = oldProtection;
}
}
}

void _ContextMenuButton_Click(Microsoft.Office.Core.CommandBarButton Ctrl, ref bool CancelDefault)
{
MessageBox.Show("Hey, you clicked the Contextbutton !");
}