ref: 0229ae9cfd2e90f587c08280e17833fd7cb72303
dir: /textscreen/txt_radiobutton.h/
// // Copyright(C) 2005-2014 Simon Howard // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License // as published by the Free Software Foundation; either version 2 // of the License, or (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // #ifndef TXT_RADIOBUTTON_H #define TXT_RADIOBUTTON_H /** * @file txt_radiobutton.h * * Radio button widget. */ /** * A radio button widget. * * Radio buttons are typically used in groups, to allow a value to be * selected from a range of options. Each radio button corresponds * to a particular option that may be selected. A radio button * has an indicator to indicate whether it is the currently-selected * value, and a text label. * * Internally, a radio button tracks an integer variable that may take * a range of different values. Each radio button has a particular * value associated with it; if the variable is equal to that value, * the radio button appears selected. If a radio button is pressed * by the user through the GUI, the variable is set to its value. * * When a radio button is selected, the "selected" signal is emitted. */ typedef struct txt_radiobutton_s txt_radiobutton_t; #include "txt_widget.h" struct txt_radiobutton_s { txt_widget_t widget; char *label; int *variable; int value; }; /** * Create a new radio button widget. * * @param label The label to display next to the radio button. * @param variable Pointer to the variable tracking whether this * radio button is selected. * @param value If the variable is equal to this value, the * radio button appears selected. * @return Pointer to the new radio button widget. */ txt_radiobutton_t *TXT_NewRadioButton(char *label, int *variable, int value); /** * Set the label on a radio button. * * @param radiobutton The radio button. * @param value The new label. */ void TXT_SetRadioButtonLabel(txt_radiobutton_t *radiobutton, char *value); #endif /* #ifndef TXT_RADIOBUTTON_H */