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Dear sir/madam,

How to add a maximize button in floating control bar, just like the one in a normal window?

Regards,

Chun Pong

Thank you for your response.

May I have a concrete example / sample / steps to add the button?

No, unfortunately we don’t have such sample project. But this is simple to do. You should create your own CExtControlBar-derived class and override the CExtControlBar::OnNcAreaButtonsReinitialize() virtual method in it. Your method should look like:

void C_YOUR_ControlBar_CLASS_NAME::OnNcAreaButtonsReinitialize()
{
            ASSERT_VALID( this );
INT nCountOfNcButtons = NcButtons_GetCount();
            if( nCountOfNcButtons > 0 )
                        return;
            NcButtons_Add( new CExtBarNcAreaButtonClose(this) );
#if (!defined __EXT_MFC_NO_TAB_CONTROLBARS)
            NcButtons_Add( new CExtBarNcAreaButtonAutoHide(this) );
#endif // (!defined __EXT_MFC_NO_TAB_CONTROLBARS)
            // NcButtons_Add( new CExtBarNcAreaButtonExpand(this) );
            NcButtons_Add( new CExtBarNcAreaButtonMenu(this) );
            NcButtons_Add( new CExtBarNcAreaButtonFloatingMaximizeRestore(this) );
}

The method above is very similar to the original CExtControlBar::OnNcAreaButtonsReinitialize() method. The only difference is the last line of code:

   NcButtons_Add( new CExtBarNcAreaButtonFloatingMaximizeRestore(this) );

Prof-UIS contains the commented source code of the CExtBarNcAreaButtonFloatingMaximizeRestore class in the .../Prof-UIS/Include/ExtControlBar.h and .../Prof-UIS/Src/ExtControlBar.cpp files. You can copy this source code into your project. The CExtBarNcAreaButtonFloatingMaximizeRestore class is the beta implementation of the caption button you need.

The floating bars are really docked inside floating palette windows. These palette windows are the CExtMiniDockFrameWnd windows in Prof-UIS or CMiniDockFrameWnd windows in MFC. These windows are based on the WS_EX_TOOLWINDOW style. I.e. they are tool windows. The tool windows cannot display maximize/restore/minimize caption buttons. But you can inject your own custom buttons into the captions of Prof-UIS control bars, handle the button click and move the floating bar into the position which covers the monitor’s desktop area:

http://www.prof-uis.com/prof-uis/tech-support/faq/control-bars.aspx#how-to-add-a-custom-button-to-the-caption-of-my-control-bar