An Introduction to C & GUI Programming -----Simon Long 学习笔记 6

Radio buttons  这种选择要求在一个组内，这样才会选择一个去勾选其它的

#include <gtk/gtk.h>
GtkWidget *txt;

void end_program (GtkWidget *wid, gpointer ptr)
{
    printf("bybye
");
    gtk_main_quit ();
}

void copy_text (GtkWidget *wid, gpointer ptr)
{
    const char *input = gtk_entry_get_text (GTK_ENTRY (txt));
    gtk_label_set_text (GTK_LABEL (ptr), input);
}

void check_toggle (GtkWidget *wid, gpointer ptr)
{
    static int i = 0;
    i++;
    char arr[60] = {0};
    sprintf(arr, "The state of the button checked %d times
", i);
    printf ("The state of the button is %d
", gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (wid)));
    gtk_label_set_text (GTK_LABEL (ptr), arr);
}

int main (int argc, char *argv[])
{
    gtk_init (&argc, &argv);

    GtkWidget *win1 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    GtkWidget *win2 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title (GTK_WINDOW(win1), "QT");
    gtk_window_set_title (GTK_WINDOW(win2), "GTK");

    GtkWidget *btn1 = gtk_button_new_with_label ("Close window1");
    GtkWidget *btn2 = gtk_button_new_with_label ("copy right");
    GtkWidget *btn3 = gtk_button_new_with_label ("copy left");

    GtkWidget *chk1 = gtk_check_button_new_with_label ("My check");
    GtkWidget *chk2 = gtk_check_button_new_with_label ("check");
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (chk1), FALSE);   //  设置默认勾选状态
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (chk2), TRUE);  //  设置默认勾选状态

    GtkWidget *rad1 = gtk_radio_button_new_with_label (NULL,"男");
    GSList *group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (rad1));
    GtkWidget *rad2 = gtk_radio_button_new_with_label (group,"女");    // 要在同一个组

    GtkWidget *labelA = gtk_label_new ("LABELA");
    GtkWidget *labelB = gtk_label_new ("LABELB");
    GtkAdjustment  *adj = gtk_adjustment_new (0, -100, 100, 1, 50, 0);
    txt = gtk_spin_button_new (adj, 0, 0);

    GtkWidget *table1 = gtk_grid_new ();
    GtkWidget *table2 = gtk_grid_new ();

    gtk_grid_attach (GTK_GRID (table1), labelA, 0, 0, 10, 10);
    gtk_grid_attach (GTK_GRID (table1), btn1, 20, 20, 10, 10);
    gtk_grid_attach (GTK_GRID (table1), btn3, 40, 40, 10, 10);
    gtk_grid_attach (GTK_GRID (table1), chk1, 60, 60, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), labelB, 0, 0, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), btn2, 10, 10, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), txt, 0, 20, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), chk2, 20, 20, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), rad1, 30, 30, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), rad2, 30, 40, 10, 10);


    g_signal_connect (btn1, "clicked", G_CALLBACK (end_program), NULL);
    g_signal_connect (btn2, "clicked", G_CALLBACK (copy_text), labelB);
    g_signal_connect (btn2, "clicked", G_CALLBACK (copy_text), labelA);
    g_signal_connect (btn3, "clicked", G_CALLBACK (copy_text), labelB);
    g_signal_connect (btn3, "clicked", G_CALLBACK (copy_text), labelA);
    g_signal_connect (win2, "delete_event", G_CALLBACK (end_program), NULL);
    g_signal_connect (chk1, "toggled", G_CALLBACK (check_toggle),labelA);

    gtk_container_add (GTK_CONTAINER (win1), table1);
    gtk_container_add (GTK_CONTAINER (win2), table2);

    gtk_widget_show_all (win1);
    gtk_widget_show_all (win2);
    gtk_main ();
    return 0;
}

编译gcc `pkg-config --cflags gtk+-3.0` test.c -o hello `pkg-config --libs gtk+-3.0`

结果

 下拉选项的

#include <gtk/gtk.h>
GtkWidget *txt;

void end_program (GtkWidget *wid, gpointer ptr)
{
    printf("bybye
");
    gtk_main_quit ();
}

void copy_text (GtkWidget *wid, gpointer ptr)
{
    const char *input = gtk_entry_get_text (GTK_ENTRY (txt));
    gtk_label_set_text (GTK_LABEL (ptr), input);
}

void check_toggle (GtkWidget *wid, gpointer ptr)
{
    static int i = 0;
    i++;
    char arr[60] = {0};
    sprintf(arr, "The state of the button checked %d times
", i);
    printf ("The state of the button is %d
", gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (wid)));
    gtk_label_set_text (GTK_LABEL (ptr), arr);
}

int main (int argc, char *argv[])
{
    gtk_init (&argc, &argv);

    GtkWidget *win1 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    GtkWidget *win2 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title (GTK_WINDOW(win1), "QT");
    gtk_window_set_title (GTK_WINDOW(win2), "GTK");

    GtkWidget *btn1 = gtk_button_new_with_label ("Close window1");
    GtkWidget *btn2 = gtk_button_new_with_label ("copy right");
    GtkWidget *btn3 = gtk_button_new_with_label ("copy left");

    GtkWidget *chk1 = gtk_check_button_new_with_label ("My check");
    GtkWidget *chk2 = gtk_check_button_new_with_label ("check");
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (chk1), FALSE);   //  设置默认勾选状态
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (chk2), TRUE);  //  设置默认勾选状态

    GtkWidget *rad1 = gtk_radio_button_new_with_label (NULL,"男");
    GSList *group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (rad1));
    GtkWidget *rad2 = gtk_radio_button_new_with_label (group,"女");

    GtkWidget *labelA = gtk_label_new ("LABELA");
    GtkWidget *labelB = gtk_label_new ("LABELB");
    GtkAdjustment  *adj = gtk_adjustment_new (0, -100, 100, 1, 50, 0);
    txt = gtk_spin_button_new (adj, 0, 0);

    GtkWidget *comb = gtk_combo_box_text_new ();
    gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (comb),"A");
    gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (comb),"B");
    gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (comb),"C");
    gtk_combo_box_set_active (GTK_COMBO_BOX (comb), 0);

    GtkWidget *table1 = gtk_grid_new ();
    GtkWidget *table2 = gtk_grid_new ();

    gtk_grid_attach (GTK_GRID (table1), labelA, 0, 0, 10, 10);
    gtk_grid_attach (GTK_GRID (table1), btn1, 20, 20, 10, 10);
    gtk_grid_attach (GTK_GRID (table1), btn3, 40, 40, 10, 10);
    gtk_grid_attach (GTK_GRID (table1), chk1, 60, 60, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), labelB, 0, 0, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), btn2, 10, 10, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), txt, 0, 20, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), chk2, 20, 20, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), rad1, 30, 30, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), rad2, 30, 40, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), comb, 0, 40, 10, 10);


    g_signal_connect (btn1, "clicked", G_CALLBACK (end_program), NULL);
    g_signal_connect (btn2, "clicked", G_CALLBACK (copy_text), labelB);
    g_signal_connect (btn2, "clicked", G_CALLBACK (copy_text), labelA);
    g_signal_connect (btn3, "clicked", G_CALLBACK (copy_text), labelB);
    g_signal_connect (btn3, "clicked", G_CALLBACK (copy_text), labelA);
    g_signal_connect (win2, "delete_event", G_CALLBACK (end_program), NULL);
    g_signal_connect (chk1, "toggled", G_CALLBACK (check_toggle),labelA);

    gtk_container_add (GTK_CONTAINER (win1), table1);
    gtk_container_add (GTK_CONTAINER (win2), table2);

    gtk_widget_show_all (win1);
    gtk_widget_show_all (win2);
    gtk_main ();
    return 0;
}

结果

 将下拉选项与信号挂钩

#include <gtk/gtk.h>
GtkWidget *txt;

void end_program (GtkWidget *wid, gpointer ptr)
{
    printf("bybye
");
    gtk_main_quit ();
}

void copy_text (GtkWidget *wid, gpointer ptr)
{
    const char *input = gtk_entry_get_text (GTK_ENTRY (txt));
    gtk_label_set_text (GTK_LABEL (ptr), input);
}

void check_toggle (GtkWidget *wid, gpointer ptr)
{
    static int i = 0;
    i++;
    char arr[60] = {0};
    sprintf(arr, "The state of the button checked %d times
", i);
    printf ("The state of the button is %d
", gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (wid)));
    gtk_label_set_text (GTK_LABEL (ptr), arr);
}

void combo_changed (GtkWidget *wid, gpointer ptr)
{
    char arr[60] = {0};
    int sel = gtk_combo_box_get_active (GTK_COMBO_BOX (wid));
    char *selected = gtk_combo_box_text_get_active_text (GTK_COMBO_BOX_TEXT (wid));
    sprintf (arr, "The value of the combo is %d %s
", sel, selected);
    gtk_label_set_text (GTK_LABEL (ptr), arr);
}

int main (int argc, char *argv[])
{
    gtk_init (&argc, &argv);

    GtkWidget *win1 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    GtkWidget *win2 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title (GTK_WINDOW(win1), "QT");
    gtk_window_set_title (GTK_WINDOW(win2), "GTK");

    GtkWidget *btn1 = gtk_button_new_with_label ("Close window1");
    GtkWidget *btn2 = gtk_button_new_with_label ("copy right");
    GtkWidget *btn3 = gtk_button_new_with_label ("copy left");

    GtkWidget *chk1 = gtk_check_button_new_with_label ("My check");
    GtkWidget *chk2 = gtk_check_button_new_with_label ("check");
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (chk1), FALSE);   //  设置默认勾选状态
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (chk2), TRUE);  //  设置默认勾选状态

    GtkWidget *rad1 = gtk_radio_button_new_with_label (NULL,"男");
    GSList *group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (rad1));
    GtkWidget *rad2 = gtk_radio_button_new_with_label (group,"女");

    GtkWidget *labelA = gtk_label_new ("LABELA");
    GtkWidget *labelB = gtk_label_new ("LABELB");
    GtkWidget *labelC = gtk_label_new ("LABELC");

    GtkAdjustment  *adj = gtk_adjustment_new (0, -100, 100, 1, 50, 0);
    txt = gtk_spin_button_new (adj, 0, 0);

    GtkWidget *comb = gtk_combo_box_text_new ();
    gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (comb),"A");
    gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (comb),"B");
    gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (comb),"C");
    gtk_combo_box_set_active (GTK_COMBO_BOX (comb), 0);

    GtkWidget *table1 = gtk_grid_new ();
    GtkWidget *table2 = gtk_grid_new ();

    gtk_grid_attach (GTK_GRID (table1), labelA, 0, 0, 10, 10);
    gtk_grid_attach (GTK_GRID (table1), labelC, 0, 20, 10, 10);
    gtk_grid_attach (GTK_GRID (table1), btn1, 20, 20, 10, 10);
    gtk_grid_attach (GTK_GRID (table1), btn3, 40, 40, 10, 10);
    gtk_grid_attach (GTK_GRID (table1), chk1, 60, 60, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), labelB, 0, 0, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), btn2, 10, 10, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), txt, 0, 20, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), chk2, 20, 20, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), rad1, 30, 30, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), rad2, 30, 40, 10, 10);
    gtk_grid_attach (GTK_GRID (table2), comb, 0, 40, 10, 10);

    g_signal_connect (btn1, "clicked", G_CALLBACK (end_program), NULL);
    g_signal_connect (btn2, "clicked", G_CALLBACK (copy_text), labelB);
    g_signal_connect (btn2, "clicked", G_CALLBACK (copy_text), labelA);
    g_signal_connect (btn3, "clicked", G_CALLBACK (copy_text), labelB);
    g_signal_connect (btn3, "clicked", G_CALLBACK (copy_text), labelA);
    g_signal_connect (win2, "delete_event", G_CALLBACK (end_program), NULL);
    g_signal_connect (chk1, "toggled", G_CALLBACK (check_toggle),labelA);
    g_signal_connect (comb, "changed", G_CALLBACK (combo_changed),labelC);

    gtk_container_add (GTK_CONTAINER (win1), table1);
    gtk_container_add (GTK_CONTAINER (win2), table2);

    gtk_widget_show_all (win1);
    gtk_widget_show_all (win2);
    gtk_main ();
    return 0;
}

结果

启动时

点击下拉框时

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原文地址：https://www.cnblogs.com/goodluck14/p/13238369.html