Hello Everyone. I'm trying to understand how events are propagated among
widgets and windows.
I have a class derived from Widget and it overrides "int handle(int)".
I instantiate the class in a Window along with a Button Widget. The Button
Widget has a callback.
When I click the Button Widget, my derived class handles it!?
How do I prevent this from happening? I would like the derived Widget to only
handle events when those events occur with respect to it.
Here is the code:
//----------------------------------------------------
#include <fltk/Window.h>
#include <fltk/Widget.h>
#include <fltk/Button.h>
#include <fltk/events.h>
#include <fltk/run.h>
using namespace fltk;
#include <iostream>
using namespace std;
class A : public Widget {
public:
A(int x,int y,int w,int h, const char *l=0) : Widget(x,y,w,h,l) {
add_timeout(0.5);
}
int handle(int event) {
if (event == TIMEOUT) {
if (event_state(BUTTON1))
cout << "Mouse Button1" << endl;
repeat_timeout(0.5);
}
return 1;
}
};
void myCallback(Widget* w, void* d) {/*do it*/}
int main(void) {
Window W(0,0,150,150,"Main");
W.begin();
A* classA = new A(0,0,150,100,"Class A :\n public Widget");
Button B(0,110,100,30,"Button");
B.callback((Callback*)myCallback);
W.end();
W.show();
return run();
}
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