Checkbox in Ribbon automatically uncheck when custom task pane closed

Question

Hi all,
I've just created a add-in in which a ribbon that has a checkbox.. When checkbox is checked, a custom taskpane displays and vice versa

This is ribbon.xml
<customUI xmlns="http://schemas.microsoft.com/office/2006/01/customui" onLoad="OnLoad">
  <ribbon>
    <tabs>
        <tab idMso="TabAddIns" label="Utilities">
            <group id="idUtilities"
                   label="Tools">              
                <checkBox id="SRSGenerator"                           
                              label="SRS Generator"
                              onAction="OnSRSGenerator"
                              />
            </group>
      </tab>
    </tabs>
  </ribbon>
</customUI>

And this is code in Ribbon.cs
public void OnSRSGenerator(Office.IRibbonControl control, bool isChecked){
       Globals.ThisAddIn.CustomTaskPanes[0].Visible = isChecked;
}

But I don't know how to make Checkbox in Ribbon automatically uncheck when custom task pane closed (eg, user cllick x button in custom taskpane).

Pls tell me the solution.

Thanks very much

Answer 1

Hi all, I found the solution.

<customUI xmlns="http://schemas.microsoft.com/office/2006/01/customui" onLoad="OnLoad">
  <ribbon>
    <tabs>
        <tab idMso="TabAddIns" label="Utilities">
            <group id="idUtilities"
                   label="Tools">              
                <checkBox id="SRSGenerator"                           
                              label="SRS Generator"
                              onAction="OnSRSGenerator"
                              onPressed="OnSRSGeneratorPressed"
                              />
            </group>
      </tab>
    </tabs>
  </ribbon>
</customUI>

And this is code in Ribbon.cs
public bool OnSRSGeneratorPressed(Office.IRibbonControl control){
       return Globals.ThisAddIn.CustomTaskPanes[0].Visible;
}

In the ThisAddIn class, the code to process visible_Changed of the custom taskpane must call
ribbon.Invalidate("SRSGenerator")

I found this solution when I was surfing this forum

Answer 2

It helps me out of the problem, It is good for reference.