Add documentation for high-level textscreen functions.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 1449

1 files changed, 34 insertions, 1 deletions

diff --git a/textscreen/txt_button.h b/textscreen/txt_button.h
index 11040f2f..ea7fd6e5 100644
--- a/textscreen/txt_button.h
+++ b/textscreen/txt_button.h
@@ -22,6 +22,13 @@
 #ifndef TXT_BUTTON_H
 #define TXT_BUTTON_H
 
+/**
+ * Button widget.
+ *
+ * A button is a widget that can be selected to perform some action.
+ * When a button is pressed, it emits the "pressed" signal.
+ */
+
 typedef struct txt_button_s txt_button_t;
 
 #include "txt_widget.h"
@@ -32,9 +39,35 @@ struct txt_button_s
     char *label;
 };
 
+/**
+ * Create a new button widget.
+ *
+ * @param label        The label to use on the new button.
+ * @return             Pointer to the new button widget.
+ */
+
 txt_button_t *TXT_NewButton(char *label);
-txt_button_t *TXT_NewButton2(char *label, TxtWidgetSignalFunc func, 
+
+/**
+ * Create a new button widget, binding the "pressed" signal to a
+ * specified callback function.
+ *
+ * @param label        The label to use on the new button.
+ * @param func         The callback function to invoke.
+ * @param user_data    User-specified pointer to pass to the callback.
+ * @return             Pointer to the new button widget.
+ */
+
+txt_button_t *TXT_NewButton2(char *label, TxtWidgetSignalFunc func,
                              void *user_data);
+
+/**
+ * Change the label used on a button.
+ *
+ * @param button       The button.
+ * @param label        The new label.
+ */
+
 void TXT_SetButtonLabel(txt_button_t *button, char *label);
 
 #endif /* #ifndef TXT_BUTTON_H */