PacketEditor GUI

#include<Windows.h>
#include"gui.h"
#include"gui_pe.h"

gui pe;
list log;

#define C_SENDHOOK 101
#define C_RECVHOOK 102
#define E_RETURNADDRESS 201
#define E_PACKET 202
#define E_FORMAT 203
#define B_CLEAR 301
#define B_SEND 302

void gui_create(HWND hWnd){
    pe.CheckBox(C_SENDHOOK, "SendHook", 110, 500, true);
    pe.CheckBox(C_RECVHOOK, "RecvHook", 220, 500, true);

    pe.EditBox(E_RETURNADDRESS, "", 3, 500, 100);
    pe.EditBox(E_PACKET, "", 3, 520, 550);
    pe.EditBox(E_FORMAT, "", 3, 540, 550);
    pe.Button(B_CLEAR, "Clear", 330, 500);
    pe.Button(B_SEND, "Send", 560, 520);

    //List Control
    log.Set(hWnd, 3, 3, 594, 494);
    log.AddHeader("Type", 40);
    log.AddHeader("Return", 60);
    log.AddHeader("Length", 50);
    log.AddHeader("Packet", 400);//Format Packet
    log.AddHeader("", 0);//Original Packet
}

void gui_control(WORD wID){
    switch(wID){
    case B_CLEAR:
        log.Clear();
        break;
    default:
        break;
    }
}

void gui_notify(HWND hWnd){
    if(hWnd == log.GetHWND()){
        char Buffer[1024 * 4];
        log.GetSelectedItem(1, Buffer);
        if(!Buffer[0]){
            return;
        }
        pe.SetString(E_RETURNADDRESS, Buffer);
        log.GetSelectedItem(4, Buffer);
        pe.SetString(E_PACKET, Buffer);
        log.GetSelectedItem(3, Buffer);
        pe.SetString(E_FORMAT, Buffer);
    }
}

#include<stdio.h>
char Buffer[65536];
void _stdcall AddLog(DWORD Type, DWORD dwReturn, DWORD Length, BYTE *Packet, char *Format){
    if((Type == 0 && !pe.CheckBoxStatus(C_SENDHOOK)) || (Type == 1 && !pe.CheckBoxStatus(C_RECVHOOK))){
        return;
    }
    if(Type == 0){
        log.AddItem(0, "Out");
    }
    else{
        log.AddItem(0, "In");
    }
    sprintf(Buffer, "%08X", dwReturn);
    log.AddItem(1, Buffer);
    sprintf(Buffer, "%d", Length);
    log.AddItem(2, Buffer);
    log.AddItem(3, Format);
    sprintf(Buffer, "@%04X", *(WORD *)&Packet[0 + Type * 4]);
    for(int i=2; i<Length; i++){
        sprintf(&Buffer[strlen(Buffer)], " %02X", Packet[i + Type * 4]);
    }
    log.AddItem(4, Buffer);
}

void gui_pe(HINSTANCE hInstance){
    pe.Run(hInstance, "Packet Test", 800, 600, gui_create, gui_control, gui_notify);
}