imm wrote:
> Please post a short example that is complete enough to compile.
> What you have posted doesn't show enough of how you are using your
> widget to allow meaningful advice to be given.
Sorry, here's the complete example:
#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Group.H>
#include <FL/Fl_Box.H>
class MyGroup : public Fl_Group
{
Fl_Box *box1;
public:
MyGroup(int x, int y, int w, int h, const char *l=0)
: Fl_Group(x, y, w, h, l)
{
box(FL_FLAT_BOX);//main widget
color((Fl_Color) FL_GRAY);
begin();
box1 = new Fl_Box(5,5,100, 100);//child widget
box1->box(FL_FLAT_BOX);
box1->color((Fl_Color) FL_RED);
end();
}
//called by the parent widget (the main window)
//when it resized
void myResize(int x, int y)
{
resize(x+5, y+5, 100, 100);//resize the main widget
box1->resize(x+5, y+5, 100, 100);//resize the child widget
}
};
class Application : public Fl_Double_Window
{
MyGroup *grp;
int offset;
void resize(int x, int y, int w, int h)
{
Fl_Double_Window::resize(x, y, w, h);
grp->myResize(offset,offset);
}
public:
Application(int w, int h, const char *l, int argc, char *argv[]);
};
Application::Application(int w, int h, const char *l,
int argc, char *argv[])
: Fl_Double_Window(w, h, l)
{
box(FL_DOWN_BOX);
color((Fl_Color) FL_WHITE);
offset = Fl::box_dx(this->box());
begin();
grp = new MyGroup(offset, offset,10,10);
end();
resizable(this);
show(argc, argv);
}
int main (int argc, char ** argv)
{
Application myApp(500, 300, "Simple app", argc, argv);
return(Fl::run());
}
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