dfb学习资料,了解DFB的内部原理

#include <directfb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static IDirectFB          *dfb   = NULL;
static IDirectFBDisplayLayer *layer = NULL;
static IDirectFBSurface         *surface = NULL;
static IDirectFBEventBuffer *events = NULL;
static IDirectFBImageProvider *provider;

int main( int argc, char *argv[])
{
    void *point = NULL;
    int pitch;
    int i,j;
    int quit=0;
    
    
    char *data;
    
   static int screen_width  = 0;
  static int screen_height = 0;

    DirectFBInit(&argc,&argv);
    DirectFBCreate(&dfb);
    dfb->GetDisplayLayer(dfb, DLID_PRIMARY, &layer);
   
    dfb->CreateInputEventBuffer(dfb,DICAPS_ALL,DFB_TRUE,&events);