Create a UI figure with a button. Then, create a context menu with two menu items in the figure and assign the context menu to the button. To view the context menu, right-click on the button.

fig = uifigure; btn = uibutton(fig); cm = uicontextmenu(fig); m1 = uimenu(cm,"Text","Option 1");m2 = uimenu(cm,"Text","Option 2");btn.ContextMenu = cm;

In a new script in your current folder, create a UI figure. Then, create a tree with four top-level nodes and a set of nested nodes.

fig = uifigure; t = uitree(fig,"Position",[20 200 175 100]); category1 = uitreenode(t,"Text","Runners");r1 = uitreenode(category1,"Text","Joe");r2 = uitreenode(category1,"Text",“琳达”);category2 = uitreenode(t,"Text","Cyclists");c1 = uitreenode(category2,"Text","Rajeev");category3 = uitreenode(t,"Text","Hikers");h1 = uitreenode(category3,"Text","Jack");category4 = uitreenode(t,"Text","Swimmers");s1 = uitreenode (category4,"Text","Logan");

Create a context menu with one menu item and two submenus that users can click to expand a single tree node or all of the tree nodes. For each submenu, specify aMenuSelectedFcn回调函数执行当用户选择the menu option. Pass the relevant app object as input to each function to access app data from within the callback function.

cm = uicontextmenu(fig); m1 = uimenu(cm,"Text","Expand...");sbm1 = uimenu(m1,"Text","This Node",..."MenuSelectedFcn",{@expandSingle,fig}); sbm2 = uimenu(m1,"Text","All Nodes",..."MenuSelectedFcn",{@expandAll,t});

Assign the context menu to the top-level tree nodes by setting theContextMenuproperty of each node to theContextMenuobject.

category1.ContextMenu = cm; category2.ContextMenu = cm; category3.ContextMenu = cm; category4.ContextMenu = cm;

At the bottom of the file, define theexpandSingleandexpandAllcallback functions. Define the functions to accept the source and event data that MATLAB passes to all callback functions.

Define theexpandSinglefunction to also accept the UI figure object containing the tree, and use theCurrentObjectproperty of the figure to determine which tree node was clicked to bring up the context menu. Then, expand that node.

Define theexpandAllfunction to also accept the tree object, and expand all of the nodes in the tree.

functionexpandSingle(src,event,f) node = f.CurrentObject; expand(node)endfunctionexpandAll(src,event,t) expand(t)end

Save and run the script. Right-click any of the top-level tree nodes to view the context menu.

Create a line plot in a traditional figure. Then, create a context menu with one menu item and assign it to the line plot. Create aContextMenuOpeningFcncallback function that displays output in the Command Window each time the context menu opens.

f = figure; p = plot(1:10); cm = uicontextmenu(f); m = uimenu(cm,"Text","Menu1");cm.ContextMenuOpeningFcn = @(src,event)disp("Context menu opened");p.ContextMenu = cm;

To view the context menu, right-click the plot line. When the context menu opens, the Command Window also displays the message:Context menu opened.