Re: Beginner Question: Changing the Text of a Button

[Chris Share <cpsmusic yahoo com>]

Yep, you're right!

I tried

start.set_label("Stop");

and it's working now.
________________________________
From: Kevin Brightwell <kevin brightwell2 gmail com>
To: Chris Share <cpsmusic yahoo com> 
Cc: gtkmm-list <gtkmm-list gnome org> 
Sent: Wednesday, 10 July 2013 1:22 PM
Subject: Re: Beginner Question: Changing the Text of a Button



I'm on my phone, but you're not using the gtkmm bindings, you're trying to mix C and C++ together.
I think you wanted button.set text() or something similar.
Cheers,
Kevin
On 2013-07-09 11:15 PM, "Chris Share" <cpsmusic yahoo com> wrote:

Hi,
> I'm a complete beginner with respect to gtk and gtkmm.
>
> I'd like to add a gtkmm gui to a command line application that I've developed.
>
> As a starting point, I've created a simple demo app with a button. I'd like to change the button's text each 
> time it's clicked.
>
> The button is declared in the app's main window as
>
> Gtk::Button start;
>
>
> When it's clicked I'd like to change its text as shown below:
>
>
> void MainWindow::on_play_button_clicked() {
>     
>     std::cout << "Play" << std::endl;
>     
>     if(state == 0) {
>         gtk_button_set_label(GTK_BUTTON(start), "Stop");
>     } else {
>  gtk_button_set_label(GTK_BUTTON(start), "Start");
>     }
> }
>
>
> What I can't figure out is the actual code to get this to work.
>
>
> When I build the code I get the following error:
>
>
> MainWindow.cpp: In member function ‘void MainWindow::on_play_button_clicked()’:
> MainWindow.cpp:31: error: invalid cast from type ‘Gtk::Button’ to type ‘GTypeInstance*’
> make: *** [metro] Error 1
>
>
> What am I doing wrong here?
>
>
> Cheers,
>
>
> Chris
>
>
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