Gents:
The code below is as naive as it could get. It works correctly under
Windows XP. It also works correctly under Ubuntu Linux *if Compiz is
used*. I also tried this: I used a Windows XP virtual machine and
through SSH ran it in Ubuntu (without Compiz) and it also worked. So,
as somebody hinted, there's a problem with X.
Cheers,
Rodrigo
#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Button.H>
#include <FL/fl_draw.H>
#include <FL/x.H>
#include <FL/Fl_File_Chooser.H>
#include <stdlib.h>
#include <stdio.h>
class MyWindow : public Fl_Double_Window {
private:
void draw(){
Fl_Double_Window::draw();
return;
}
public:
MyWindow(int x, int y, int w, int h, const char
*l):Fl_Double_Window(x, y, w, h, l){
}
void save_pnm(const char *name){
uchar *buf = new uchar[3*w()*h()];
redraw();
Fl::check();
fl_read_image(buf, 0, 0, w(), h());
FILE *fp = fopen(name, "w+");
fprintf(fp, "P6\n%d %d\n255\n", w(), h());
fwrite((uchar*)buf, w()*h()*3, 1, fp);
fclose(fp);
delete buf;
return;
}
};
void wincb(Fl_Widget*, void *w){
MyWindow *win = (MyWindow*)w;
win->save_pnm("fig.pnm");
exit(0);
return;
}
void btncb(Fl_Widget*, void *w){
MyWindow *win = (MyWindow*)w;
Fl_File_Chooser chooser(".", "*.pnm", Fl_File_Chooser::CREATE,
"Save as PNM");
chooser.show();
while(chooser.shown()) Fl::wait();
if (chooser.value() != NULL){
win->save_pnm(chooser.value());
}
return;
}
int main(int argc, char *argv[]){
MyWindow win(10, 10, 200, 100, "Test");
Fl_Button btn(10, 10, win.w() - 20, win.h() - 20, "Save as PNM");
btn.callback(btncb, &win);
win.end();
win.callback(wincb, &win);
win.show();
return Fl::run();
}
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