private void PerformClick()
{
SWF.ToolStripItem item = (SWF.ToolStripItem)Provider.Component;
if (item.Owner != null && item.Owner.InvokeRequired)
{
item.Owner.BeginInvoke(new SWF.MethodInvoker(PerformClick));
return;
}
var currentParent = item.OwnerItem as SWF.ToolStripMenuItem;
// Invoking without a visible parent results in exceptions
if (currentParent != null && !currentParent.DropDown.Visible)
{
return;
}
var dropdown = item as SWF.ToolStripDropDownItem;
bool hide = false;
if (dropdown != null)
{
hide = dropdown.Pressed;
}
// Make sure selection changes, or else another item's
// dropdown menu might still appear.
if (item.Owner != null)
{
item.Select();
}
item.PerformClick();
// PerformClick does _not_ show/hide the DropDown, so
// we must do this manually. On Vista, clicking the
// button appears to both Show the drop down and
// Perform a click, so we emulate that behavior.
if (dropdown != null && !(item is SWF.ToolStripSplitButton))
{
if (hide)
{
dropdown.HideDropDown();
}
else
{
dropdown.ShowDropDown();
}
}
}
/// <summary>
/// 当鼠标点击，激活该菜单项
/// </summary>
public bool PerformClick(string name)
{
try
{
System.Windows.Forms.ToolStripItem menuItem = MenuTableItem(name);
if (menuItem == null)
{
return(false);
}
menuItem.PerformClick();
return(true);
}
catch (Exception ex)
{
MapWinGIS.Utility.Logger.Dbg("在clsMenu.PerformClick(" + name + ")中发生一个错误：" + ex.ToString());
}
return(false);
}
/// <summary>
/// Activates correct menu item by recursively going through the whole menu structure. Called from OnClick and recursively calls itself.
/// </summary>
/// <param name="item"></param>
/// <param name="next"></param>
/// <param name="forward"></param>
/// <returns></returns>
private bool OnClick_RecursivelyActivate(ToolStripItem item, ref bool next, bool forward)
{
if (!(item is ToolStripMenuItem))
return false;
if (((ToolStripMenuItem)item).DropDownItems.Count > 0)
{
for (int i = 0; i < ((ToolStripMenuItem)item).DropDownItems.Count; i++)
if (OnClick_RecursivelyActivate(((ToolStripMenuItem)item).DropDownItems[forward ? i
: ((ToolStripMenuItem)item).DropDownItems.Count - 1 - i], ref next, forward))
return true;
}
else
{
if (next)
{
item.PerformClick();
return true;
}
next = item.Selected || next;
}
return false;
}
private bool PerformMenuClick(ToolStripItem menuItem, Keys shortCut)
{
if (menuItem is ToolStripMenuItem)
{
if ((menuItem as ToolStripMenuItem).ShortcutKeys == shortCut)
{
menuItem.PerformClick();
return true;
}
}
if (menuItem is ToolStripDropDownItem)
{
foreach (ToolStripItem item in (menuItem as ToolStripDropDownItem).DropDownItems)
{
if (PerformMenuClick(item, shortCut))
{
return true;
}
}
}
return false;
}
