Connect() and invalid static cast.
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From: Stefano Smania MD on 21 Dec 2008 16:05 I use C since 1988 but I'm newbie about wxwidgets. I've a (stupid?) problem with Connect() function. I've to create some wxBitmapButton runtime for a dynamic graphical menu. I need to use the Connect function to handle mouse events. I use Connect function in this mode: bool ss_GfxMenu::SetParentChild(struct ss_GfxMenuItem *parent,struct ss_GfxMenuItem*child) { ... struct wxBitmapButton * bb; bb=parent->ItemButton; Connect(bb->GetId(), wxEVT_LEFT_DOWN,wxMouseEventHandler(ss_GfxMenu::ShowChild)); ... TheShowChild function has this prototype: class ss_GfxMenu { ... void ShowChild( wxMouseEvent& event ); ... ~ss_GfxMenu(void); }; ...and the funtion is: void ss_GfxMenu::ShowChild( wxMouseEvent& event ) { } Compiling (Win, mingw32) I obtain this compiler error: .....\ss_gfxfloatmenu.cpp||In member function `bool ss_GfxMenu::SetParentChild(ss_GfxMenuItem*, ss_GfxMenuItem*)' ....\ss_gfxfloatmenu.cpp|227|error: invalid static_cast from type `void (ss_GfxMenu::*)(wxMouseEvent&)' to type `void (wxEvtHandler::*)(wxMouseEvent&)' Havce you any idea to resolve it? Searching on internet I've not found the solution. Thanks Stefano
From: kvnsateesh on 22 Dec 2008 02:54
On Dec 22, 2:05 am, Stefano Smania MD <smania2...(a)alice.it> wrote: > I use C since 1988 but I'm newbie about wxwidgets. I've a (stupid?) > problem with Connect() function. I've to create some wxBitmapButton > runtime for a dynamic graphical menu. I need to use the Connect function > to handle mouse events. > > I use Connect function in this mode: > > bool ss_GfxMenu::SetParentChild(struct ss_GfxMenuItem *parent,struct > ss_GfxMenuItem*child) > { > ... > > struct wxBitmapButton * bb; > bb=parent->ItemButton; > > Connect(bb->GetId(), > wxEVT_LEFT_DOWN,wxMouseEventHandler(ss_GfxMenu::ShowChild)); > > ... > > TheShowChild function has this prototype: > > class ss_GfxMenu > { > ... > void ShowChild( wxMouseEvent& event ); > ... > > ~ss_GfxMenu(void); > > }; > > ..and the funtion is: > > void ss_GfxMenu::ShowChild( wxMouseEvent& event ) > > { > > } > > Compiling (Win, mingw32) I obtain this compiler error: > ....\ss_gfxfloatmenu.cpp||In member function `bool > ss_GfxMenu::SetParentChild(ss_GfxMenuItem*, ss_GfxMenuItem*)' > > ...\ss_gfxfloatmenu.cpp|227|error: invalid static_cast from type `void > (ss_GfxMenu::*)(wxMouseEvent&)' to type `void > (wxEvtHandler::*)(wxMouseEvent&)' > > Havce you any idea to resolve it? Searching on internet I've not found > the solution. > > Thanks > > Stefano Hi Stefano, I think you have not derived your 'ss_GfxMenu' class from 'wxEvtHandler' class. You should derive your class from wxEvtHandler before you could make use any dynamic/static event handling. -Satish Kumar |