Note that if you set a DockStyle, then the Stretch Property, and the Height component of the Size Property are, essentially, ignored: the MenuStrip will size itself vertically. Setting the Handled parameter to TRUE will suppress the default context menu.īy using the GetNodeAt you can check if there's a node under the mouse pointer. Drop a MenuStrip Control on your Form: add ToolStripMenuItems to create your top-level Menu Entries, and add sub-menus as needed. When the user right-click the tree view, before the context popup is displayed, the OnContextPopup will be fired. no node under mouse - do not display popup MnuDoIt1.Caption := Format('Do For Item: %s', ) "mnuDoIt1" is the name of one of the popup menu items TreeNode := treeView.GetNodeAt(MousePos.X, MousePos.Y) Procedure TTreeViewForm.TreeView1ContextPopup( The OnContextPopup event is fired when the user right-clicks the control or otherwise invokes the popup menu (such as using the keyboard).īy handling the OnContextPopup for a tree view, you can locate the node under the mouse, make it selected and alter the popup menu to dynamically display node specific actions (relevant to your application). To make the PopupMenu "node aware" you need to know if there's a node "below" the mouse pointer. It pops-up even when a tree node is not selected - or - when you right click on an area where there are no nodes. Run the "program" - note how the popup menu pops-up whenever you righ-click on the tree view. Assign this popup menu for the PopupMenu property of the tree view. Drop a TPopupMenu and let it have some items. Since you will, in most cases, predefine the items of the popup menu at design time, every time the user right-clicks the control the "static" context menu will pop-up.įor those Delphi controls that display "items" - as tree views and list views you might want to have different popup menus for each item.ĭrop a TTreeView on a Delphi Form. When right-clicking a node it becomes selected and the popup menu is displayed. When the user selects the control and clicks the right mouse button the pop-up menu (an instance of the TPopupMenu control) will popup. The options in the popup menu are different depending on whether a group node or a title node has been selected. The PopupMenu property, every Delphi control publishes, identifies the pop-up menu associated with the control.
In complex tree views, you might want to display customized - dynamic context menu for each tree node. By clicking an item, the user can expand and collapse the associated list of subitems. TTreeView is comonly used when a hierarhical structure needs to be displayed to the user.
RIGHT CLICK TREENODE TO DISPLAY MENU WINDOWS
The TTreeView Delphi control wraps the Windows tree view control. Title: TreeView Items - Dynamic Context (Popup) Menus in Delphi
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