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Controlling dragging behaviour

Various pane-dragging behaviours are supported. FL can show an outline of where the window would be docked if you stopped dragging at that point.

This is a list of properties of interest in the cbCommonPaneProperties structure:

    bool mRealTimeUpdatesOn;     // default: ON
    bool mOutOfPaneDragOn;       // default: ON
    bool mExactDockPredictionOn; // default: OFF
    bool mNonDestructFrictionOn; // default: OFF
To get behaviour similar to Microsoft's DevStudio drag-ghost behaviour, mRealTimeUpdatesOn have to be set to FALSE, for example:

    cbCommonPaneProperties props;
    ....
    ....
    props.mRealTimeUpdatesOn = FALSE;
    fl->SetPaneProperties( props, wxALL_PANES );
mOutOfPaneDragOn specifies whether bars can be dragged away from this pane. (Note: this may not currently be working.)

mExactDockPredictionOn is only relevant when mRealTimeUpdatesOn is FALSE, and then the hint rectangle behaves a little jumpily. It tries to show exatly how the bar would look and where it would be docked if the dragging finished right now, i.e. the final position, with all the 'friction-physics' calculated. Otherwise the hint flies smothly above the surface only hinting whether the bar will be docked vertically or horizontally if dropped now. This is a feature you won't find anywhere else!

mNonDestructFirctionOn causes the bars not being dragged to stay where they are, while the currently dragged one is 'diving' through the underlaying panes, docking itself in and out in real time. Otherwise the stationary bars would be pushed around messing up the composition permanently. This flag is irelevant when mRealTimeUpdatesOn is FALSE, as the ghost-rect does not do any docking until the drag finishes.