概述
#include <gtk/gtk.h>
#include <string.h>
#include <stdio.h>
#include <windows.h>
#define FILE_READ_PATH "F:/123.txt"
static float read_len = 0.0;
gboolean update_progress_bar(gpointer data);
int main(int argc,char *argv[])
{
GtkWidget *window,*vbox,*pbar;
gtk_init(NULL,NULL);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_position(GTK_WINDOW(window),GTK_WIN_POS_CENTER);
gtk_window_set_title(GTK_WINDOW(window),"Process bar");
gtk_window_set_default_size(GTK_WINDOW(window),300,250);
vbox = gtk_vbox_new(FALSE,0);
gtk_container_add(GTK_CONTAINER(window),vbox);
pbar = gtk_progress_bar_new();
gtk_box_pack_start(GTK_BOX(vbox),pbar,FALSE,FALSE,50);
g_timeout_add(100,update_progress_bar,pbar);
g_signal_connect(window,"destroy",G_CALLBACK(gtk_main_quit),NULL);
gtk_widget_show_all(window);
gtk_main();
return 0;
}
gboolean update_progress_bar(gpointer data)
{
FILE *fp = NULL;
//FILE *fwp = NULL;
char buff[8] = {0};
gint size = 10,file_len = 0;
unsigned char *pbuff;
GtkProgressBar *pbar = (GtkProgressBar *)data;
if((fp = fopen(FILE_READ_PATH,"r")) == NULL)
{
return 0;
}
/*if((fwp = fopen("F:/kang.txt","ab")) == NULL)
{
return 0;
}*/
fseek(fp,0,SEEK_END);
file_len = ftell(fp);
pbuff = (unsigned char *)malloc((size+1)*sizeof(unsigned char));
memset(pbuff,0,size*sizeof(unsigned char));
if(read_len <= file_len)
{
fseek(fp,(long int)read_len,SEEK_SET);
fread(pbuff,sizeof(unsigned char),size,fp);
/* fwrite(pbuff,size*sizeof(unsigned char),1,fwp);*/
gtk_progress_bar_set_fraction(pbar,read_len/file_len);
sprintf(buff,"%d%s",(int)((read_len/file_len)*100),"%");
gtk_progress_bar_set_text(GTK_PROGRESS_BAR(pbar),buff);
read_len += size;
return TRUE; //必须返回TRUE;
}
if(read_len > file_len)
{
gtk_main_quit();
return TRUE;
}
fclose(fp);
/*fclose(fwp);*/
free(pbuff);
return TRUE; //必须返回TRUE;
}
最后
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