The Nana Programmer's Guide

Nana - a C++ framework project

The Programmer's Guide
                nana::gui::dragger

                Description

                The dragger is a helper class that allows the user to drag windows. If a user 
                presses the mouse on the specified window and moves the mouse, the specified 
                window is dragged.

                Model
                of

                None. 

                Public base classes

                None.

                Members

                            dragger()
                        
                            The default constructor.
                    
                            ~dragger()
                        
                            The destructor.
                    
                            void target(nana::gui::window wd)
                        
                            Sets the windows to be moved.
                    
                            void trigger(nana::gui::window wd)
                        
                            Sets the trigger window that the mouse drags it.
                    
                File

                nana/gui/dragger.hpp

                Notes

                1. The drag target window and trigger window can be set more than one. For 
                example.

                #include 
                <nana/gui/wvl.hpp>

                #include 
                <nana/gui/widgets/button.hpp>

                #include <nana/gui/dragger.hpp>

                int main()

                {

    using namespace nana::gui;

    form fm;

    button btn(fm, 10, 10, 100, 20);

    btn.caption(STR("Drag Me"));

    form & adherent = form_loader<form>()();

    adherent.show();

    dragger dg;

    dg.target(fm);

    dg.target(adherent);

    dg.trigger(btn);

    dg.trigger(adherent);

    fm.show();

    exec();

                }

                This example sets the btn and the adherent to be triggers, and dragger will move 
                the form and adherent when the user is dragging the trigger widgets.

                See also

                None.

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