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Dear Support,

We need to change the size of the ’X’ on all the control-bars (need to increase it) and we would like to change the image to our own.

How can we do this?

Thanks,

Ron.

There is no size computation event. Buttons just position themselves in the CExtBarNcAreaButton::OnNcAreaReposition() virtual method.

So how can I make the button bigger? I want it to be 120x20 pixels for example.

You can make it bigger and/or, optionally, position it on the left side of caption instead of the right one. This is demonstrated in the FixedSizePanels sample application. See the CMyResizableInFixedModeBar::CNcBackForwardNavigationBtn::OnNcAreaReposition() method’s source code. This method uses a width that equal to the height:

m_rc.right = m_rc.left + m_rc.Height();

You can make your button wider.

The X-button inside the CExtControlBar window caption is a CExtBarNcAreaButtonClose object and it’s non-HWND-based UI element. You should create your own class similar to CExtBarNcAreaButtonClose. Then you should create and use your own CExtControlBar-derived class which implements the CExtControlBar::OnNcAreaButtonsReinitialize() virtual method for instantiating your improved X-button. You will also need the same tabbed bar container class. Here is how to create it:

http://www.prof-uis.com/prof-uis/tech-support/faq/control-bars.aspx#how-to-remove-the-close-button-x-from-the-control-bar

Thanks.

Still It’s not clear to me where do I change the size of it - I understand that if I override the OnNcAreaDraw I can draw it, but where do I set the size of it?

Thanks,

Ron.