Hi seriously need help here with regard to FLTK coding. My primary purpose is
that i want my window to update itself by pressing some button after i change
the value of the input in.txt file. However I am not able to achieve this. Can
anyone advice me on this.
summary of my code is as below
//**********************************************************************
#include etc...
int etc.. some Global variable like data0, data1. //for storing value from
in.txt
static void read(Fl_Widget*,void*)
{
//implementation of Fl_window and Fl_chart (declared earlier as global variable
as well)
//when one button is press in main, it would callback the function read
//input from in.txt. A chart would be draw according to the value read.
win->show();
}
int main(int argc, char **argv)
{
//some buttons with call back function
}
//************************************************************************
After I change data in file in.txt, I would press the button which would again
callback the read function. However the chart in the window wont update. The
window will only update unless I use win->hide() follow by win->show(). But the
downside is that each time i hide and show, the window will keep flashing which
is not desirable. Is there any better ways I can update my window with the new
chart, like using redraw() function?
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