我是新GTK,并尝试编写一个小型界面。但是,我没有找到一个函数来帮助对齐GtkGrid中的小部件。下图显示(1)按钮尺寸不同(2)标签内的文字不是左对齐的。我该怎么调整呢?
#include <gtk/gtk.h>
//#include <iostream>
//using namespace std;
void load_file(GtkWidget *widget, gpointer data)
{
GtkWidget *dialog;
GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_OPEN;
gint res;
dialog = gtk_file_chooser_dialog_new ("Open File",
NULL,
action,
"Cancel",
GTK_RESPONSE_CANCEL,
"Open",
GTK_RESPONSE_ACCEPT,
NULL);
res = gtk_dialog_run (GTK_DIALOG (dialog));
if (res == GTK_RESPONSE_ACCEPT)
{
char *filename;
GtkFileChooser *chooser = GTK_FILE_CHOOSER (dialog);
filename = gtk_file_chooser_get_filename (chooser);
//open_file (filename);
//g_free (filename);
}
gtk_widget_destroy (dialog);
}
int main( int argc,char *argv[] )
{
gtk_init (&argc, &argv);
GtkWidget *window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size(GTK_WINDOW(window),800,400);
GtkWidget *lbl_ldmap = gtk_label_new("Load Map");
GtkWidget *lbl_capacity = gtk_label_new("Capacity");
GtkWidget *lbl_npassenger = gtk_label_new("Passengers");
GtkWidget *lbl_nveh = gtk_label_new("Vehicles");
GtkWidget *lbl_optby = gtk_label_new("Optimize By");
// gtk_label_set_justify(GTK_LABEL(lbl_ldmap),gtk_label_set_justify);
GtkWidget *btn_fchoose = gtk_button_new_with_label("...");
GtkWidget *btn_start = gtk_button_new_with_label("Start");
GtkWidget *btn_save = gtk_button_new_with_label("Save");
GtkWidget *btn_about = gtk_button_new_with_label("About");
GtkWidget *btn_close = gtk_button_new_with_label("Close");
GtkWidget *mainwindow = gtk_grid_new();
gtk_grid_set_row_spacing (GTK_GRID (mainwindow), 16);
gtk_grid_attach(GTK_GRID(mainwindow),lbl_ldmap,0,0,2,2);
gtk_grid_attach(GTK_GRID(mainwindow),btn_fchoose,3,0,2,2);
gtk_grid_attach(GTK_GRID(mainwindow),lbl_capacity,0,2,2,2);
gtk_grid_attach(GTK_GRID(mainwindow),lbl_npassenger,0,4,2,2);
gtk_grid_attach(GTK_GRID(mainwindow),lbl_nveh,0,6,2,2);
gtk_grid_attach(GTK_GRID(mainwindow),lbl_optby,0,8,2,2);
gtk_grid_attach(GTK_GRID(mainwindow),btn_start,0,10,5,2);
gtk_grid_attach(GTK_GRID(mainwindow),btn_save,6,10,5,2);
gtk_grid_attach(GTK_GRID(mainwindow),btn_about,0,12,5,2);
gtk_grid_attach(GTK_GRID(mainwindow),btn_close,6,12,5,2);
GtkWidget *area = gtk_drawing_area_new();
gtk_grid_attach(GTK_GRID(mainwindow),area,13,0,20,20);
gtk_container_add(GTK_CONTAINER(window),mainwindow);
g_signal_connect(G_OBJECT(btn_fchoose),"clicked",
G_CALLBACK(load_file),NULL);
gtk_widget_show_all(window);
gtk_main ();
return(0);
}
答案 0 :(得分:2)
像GtkBox和GtkGrid这样的容器小部件不会填充可用空间,除非他们知道如何填充它们。您需要通过在这些小部件上设置hexpand
,halign
,vexpand
和/或valign
属性来扩展GtkBox或GtkGrid的一个或多个子级(不在网格本身!)。有关详细信息,请参阅this page。