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Michael Scheffler
1350
Disable hot tracking for certain ribbon tabs
posted

Hi all,

I try to "disable" some ribbon tabs under certain conditions, e.g. the user is in a special mode, then he can no longer use Ribbon Tab-3 and Ribbon Tab-5. However these tabs should remain visible. I managed this by placing a boolean value (enabled = true/false) in the tabs Tag property and handling the event BeforeRibbonTabSelected.So the user can no longer select those tabs.

So far so good! Now I want to disable also the hot tracking for those "disabled" tabs and change the caption text of those tabs to a somehow disabled appearance.

How can can I do this ? Any ideas? DrawFilter?

Thanks! Regards

Michael

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  • 1350
    Offline posted

    In the meantime I guess I may have found somekind of a solution for it via a DrawFilter.

    if(drawPhase == DrawPhase.BeforeDrawBackColor)
    {
        if(drawParams.Element is RibbonTabItemUIElement)
        {
            // Get the underlying ribbon tab control
            RibbonTab tab = drawParams.Element.GetContext(typeof(RibbonTab)) as RibbonTab;

            if(tab != null)
            {
                // Extract ribbon info object from Tag property
                if(tab.Tag != null && tab.Tag is RibbonTabInfo)
                {
                    RibbonTabInfo tabInfo = (RibbonTabInfo) tab.Tag;

                    // Get caption text UI element
                    ImageAndTextDependentTextUIElement captionUIElem =
                            drawParams.Element.GetDescendant(typeof(ImageAndTextDependentTextUIElement)) as ImageAndTextDependentTextUIElement;
                    if(captionUIElem != null)
                    {
                        // Update the enabled field of the UI Element, either disable or re-enable it
                        captionUIElem.Enabled = tabInfo.Enabled;
                    }

                    if(!tabInfo.Enabled)
                    {
                        // Prevent drawing of the background at all
                        return true;
                    }
                }
            }
        }
    }

    Regards

    Michael

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