warner@solaria.cs.unc.edu (Byron Warner) (04/20/91)
I was tring to write a small graphical tree browser using Minidraw as a guide. I'm running Sun OS 4.1 on a Sun 3/60 use Sun's C++ compiler, and their special debugger. Here what I get when I run the program. Reading symbolic information... Read 30240 symbols (dbx) run Running: main signal SEGV (no mapping at the fault address) in Interactor::DoConfig at line 54 0 in file "Hier.c" "Hier.c" has only 59 lines All I want is. -------------------- .MenuBar . .------------------. . . Eventually scrollbars. . GraphicBlock . . . . . . . . . -------------------- Here is some of the code. class Hier : public MonoScene { public: Hier(); Interactor *Interior(); private: Interactor *MakeMenuBar(); public: MenuBar *menubar; View *view; }; class View : public GraphicBlock { public: View(Hier*, Picture*); virtual void Handle(Event&); void Manipulate(Event&); void Add(Graphic*); void Clear(); Picture* GetPicture() { return (Picture*) GetGraphic(); } class Command : public MenuItem { public: Command(View*, const char* label); protected: View* view; }; class Opendb : public Command { public: Opendb(View* v) : (v, "Open") { } virtual void Do(); }; void main (int argc, char** argv) { World* world = new World("Hierarchy", argc, argv); InitPPaint(); world->Insert(new Hier); world->Run(); } Hier::Hier() { view = new View(this, new Picture); //Insert(new Frame(Interior())); Insert(Interior()); } Interactor *Hier::MakeMenuBar() { PulldownMenu *FileMenu, *ActionMenu; MenuBar *thebar = new MenuBar(); FileMenu = new PulldownMenu(this); stuff deleted. ActionMenu->Include(new Removedb(view)); thebar->Include(FileMenu); thebar->Include(ActionMenu); return thebar; } View::View(Hier *h, Picture *p) : (nil, p) { hier = h; input = new Sensor(updownEvents); shape->width = round(15*cm); shape->height = round(10*cm); } -- ---- Byron F. Warner warner@cs.unc.edu University of North Carolina - Chapel Hill Computer Sci Department "The opinions expressed here should be yours."