LinuxQuestions.org - gtk_grid_attach_next

I setup a grid with 4 buttons.
Clicking a button should add a message to the grid below the button.
If I click any button, the window resizes to reflect the size of the message.
However buttons 1-3 show no message.
If I click the 4th button the message is displayed correctly.
If I only have 1 button then everything works correctly.

This is fixed by calling gtk_grid_insert_next_to prior to gtk_grid_attach_next_to

Code:

#include <gtk/gtk.h>

#include <stdbool.h>



#define GWD GtkWidget



typedef struct GWD3{

        GWD *grid;

        GWD *entry;

}GWD3;



GWD *win;





static GWD3 *bldEntry(char *prompt){

        GWD *grid,*lbl,*entry;

        grid=gtk_grid_new();

        lbl=gtk_label_new(prompt);

        entry=gtk_entry_new();

        gtk_entry_set_text(GTK_ENTRY(entry),"1.00 mm");

        gtk_entry_set_alignment(GTK_ENTRY(entry),2);

        gtk_entry_set_max_length(GTK_ENTRY(entry),11);

        gtk_grid_attach(GTK_GRID(grid),lbl,1,0,1,1);

        gtk_grid_attach(GTK_GRID(grid),entry,2,0,1,1);

        GWD3 *ret=g_malloc(sizeof(GWD2));

        ret->grid=grid; ret->entry=entry;

        return ret; }



static gboolean addData(GWD *w, gpointer data){

        GWD *grid=(GWD *)data;

        GWD3 *pair=bldEntry("ENTER Length  ");

        gtk_grid_attach_next_to(GTK_GRID(grid),pair->grid,w,GTK_POS_BOTTOM,2,1);

        gtk_widget_grab_focus(pair->entry);

        gtk_widget_show_all(win);

        return false;}



static GWD *addGrid(){

        GWD *grid=gtk_grid_new();

        GWD *lbl=gtk_label_new("Test Grid");

        gtk_grid_attach(GTK_GRID(grid),lbl,1,0,1,1);

        GWD *btn=gtk_button_new_with_label("Button 2");

        g_signal_connect(btn,"clicked",G_CALLBACK(addData),(gpointer)grid);

        gtk_grid_attach(GTK_GRID(grid),btn,1,1,1,1);

        btn=gtk_button_new_with_label("Button 3");

        g_signal_connect(btn,"clicked",G_CALLBACK(addData),(gpointer)grid);

        gtk_grid_attach(GTK_GRID(grid),btn,1,2,1,1);

        btn=gtk_button_new_with_label("Button 4");

        g_signal_connect(btn,"clicked",G_CALLBACK(addData),(gpointer)grid);

        gtk_grid_attach(GTK_GRID(grid),btn,1,3,1,1);

        btn=gtk_button_new_with_label("Button 5");

        g_signal_connect(btn,"clicked",G_CALLBACK(addData),(gpointer)grid);

        gtk_grid_attach(GTK_GRID(grid),btn,1,4,1,1);

        return grid;}



void btn_clicked(GtkWidget *w, gpointer data){

                g_print("Button clicked\n");}



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

                gtk_init(&argc,&argv);

                win = gtk_window_new(GTK_WINDOW_TOPLEVEL);

                g_signal_connect(win,"delete_event",gtk_main_quit,NULL);

                GWD *grid=addGrid();

                gtk_container_add(GTK_CONTAINER(win),grid);

                gtk_widget_show_all(win);

                gtk_main();

                return 1;}

Any suggestions welcome.

Thanks in advance
Bill