Scol » Lib2D GTK

h1. Buttons explanations

To create any button, you should use [[Create|_gtkButtonNew]]

How to create them ?

* A simple button with a label :

<pre><code class="php">

typeof win = ObjGtkWidget;;

typeof button = ObjGtkWidget;;

fun CBbutton (obj, uparam)=

	_fooS "The button has been clicked";

	_fooS strcat "user param is : " uparam;

	0;;

fun main ()=

	_showconsole;

	/* Create a window ...*/

	set win = ...

	/* Create the button : 

	use _gtkButtonNew function with :

	- the channel

	- the parent (here a window)

	- the label

	- the flag. For a simple button, use SCOL_GTK_BUTTON_LABEL

	- no supplemental parameter needed, so, nil it's ok */

	set button = _gtkButtonNew _channel win "My button" SCOL_GTK_BUTTON_LABEL nil;

	/* Define the callback 

	use _gtkButtonCB with :

	- the Scol object

	- the reflex

	- any parameter at your convenience

	- the flag. To get the "clicked" signal, use SCOL_GTK_BUTTON_CB_CLICKED

	It's all*/

	_gtkButtonCB button @CBbutton "yes !" SCOL_GTK_BUTTON_CB_CLICKED;

	...

	;;

</code></pre>

* A button with a mnemonic :

A mnemonic is, by example, a keyboard shortcut

<pre><code class="php">

fun CBbutton (obj, uparam)=

	_fooS "The button has been clicked";

	_fooS strcat "user param is : " uparam;

	0;;

fun main ()=

	_showconsole;

	/* Create a window ...*/

	set win = ...

	/* Create the button : 

	- the flag. For a simple button, use SCOL_GTK_BUTTON_MNEMONIC

	- no supplemental parameter needed, so, nil it's ok */

	set button = _gtkButtonNew _channel win "My button" SCOL_GTK_BUTTON_MNEMONIC nil;

	/* Define the callback 

	- the flag. To get the "clicked" signal, use SCOL_GTK_BUTTON_CB_CLICKED */

	_gtkButtonCB button @CBbutton "yes !" SCOL_GTK_BUTTON_CB_CLICKED;

	...

	;;

</code></pre>