Matthias Melcher wrote in [fltk.general] Fl_Widget::show course a app crash:
> I am not even sure if 1.1.9 can have an Overlay Window as a sub window.
At least it doesn't crash. I tested with test/subwindow.cxx by deriving
the testwindow class from Fl_Overlay_Window instead of Fl_Window. The
only thing I had to do beyond the obvious was to define
testwindow::draw_overlay() as an _empty_ method.
The modified program ran as usual. Would it make a difference with a
real draw_overlay() method? Is this what you don't know if it works, or
do we need to test with a real draw_overlay() method?
svn diff (FLTK 1.1.10-svn) attached (inline)
Albrecht
$ svn diff
Index: subwindow.cxx
===================================================================
--- subwindow.cxx (revision 6870)
+++ subwindow.cxx (working copy)
@@ -34,6 +34,7 @@
#include <stdio.h>
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
+#include <FL/Fl_Overlay_Window.H>
#include <FL/Fl_Toggle_Button.H>
#include <FL/Fl_Menu_Button.H>
#include <FL/Fl_Box.H>
@@ -66,17 +67,18 @@
else return 0;
}
-class testwindow : public Fl_Window {
+class testwindow : public Fl_Overlay_Window {
int handle(int);
void draw();
int cx, cy; char key;
Fl_Cursor crsr;
public:
testwindow(Fl_Boxtype b,int x,int y,const char *l)
- : Fl_Window(x,y,l), crsr(FL_CURSOR_DEFAULT) {box(b); key = 0;}
+ : Fl_Overlay_Window(x,y,l), crsr(FL_CURSOR_DEFAULT) {box(b); key = 0;}
testwindow(Fl_Boxtype b,int x,int y,int w,int h,const char *l)
- : Fl_Window(x,y,w,h,l) {box(b); key = 0;}
+ : Fl_Overlay_Window(x,y,w,h,l) {box(b); key = 0;}
void use_cursor(Fl_Cursor c) { crsr = c; }
+ void draw_overlay() {}; // *** empty draw_overlay() method ***
};
void testwindow::draw() {
Albrecht
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