On Wednesday 18 March 2009, Adeel Malik wrote:
>
> In my application, I am implementing status indication (displaying
> either 'red' or 'green' ) by using Gdkpixmap to assign an image to 'red' or
> 'green' pixel array. I display or hide the image by calling gtk_widget_show
> (..) or gtk_widget_hide(..) once the start button is clicked in the main gtk
> window.
> The structure of my application is as follows:
> int main()
> {
> 1. Assign Pixmaps
> 2. Set up the start button
> 3. Wait for the start button press
> 3. rest in gtk_main ()
> }
> button_function(...)
> {
>
> //while loop
> while (...)
> {
> ..
> if status=0
> {
> gtk_widget_hide(green);
> gtk_widget_show(red);
> }
> else
> {
>
> gtk_widget_hide(red);
> gtk_widget_show(green);
> ....
> }
> It appears that gtk is not upating the image during the whole course of while
> loop (which is running at just 15 cycles/s) based on 'status' variable.
> However, afer the while loop is finished, I get the updated status image.
> Could someone suggest what additonal gtk calls I have to make to make sure
> that the status image is updated (red or green) whenever there is a change in
> the value of status variable in the while loop of ' start button' function.
I think this is bad idea using two widgets for your task. Nevertheless
gdk_window_process_updates () call may help just after gtk_widget_show();
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