[游戏模版7] Win32 最简单贴图

>_<:this is the first using mapping.

>_<:There will be introducing how to do:

• First load bitmap picture return handle give hbmp, as following:
• hbmp=(HBITMAP)LoadImage(NULL,"bg.bmp",IMAGE_BITMAP,600,450,LR_LOADFROMFILE);
• there "bg.bmp" must put in the project folder!
• Second if you want draw this picture in the window,I suggest you should create a CompatibleDC, maybe now you don't know why do this, the reason is also hard to explane. You just remember doing is better for showing many pictures reducing Flash.
• hdc=GetDC(hWnd);
• mdc=CreateCompatibleDC(hdc);
• Third when you finish upper two steps, you can use SelectObject(mdc,hbmp); give the picture to CompatibleDC mdc
• Finally just use BitBlt(hdc,0,0,600,450,mdc,0,0,SRCCOPY); copy mdc including to hdc to show in the window.

//{{NO_DEPENDENCIES}}
// Microsoft Visual C++ generated include file.
// Used by FE.RC
//
#define IDR_MAINFRAME                    128
#define IDD_FE_DIALOG        102
#define IDD_ABOUTBOX                    103
#define IDS_APP_TITLE                    103
#define IDM_ABOUT                        104
#define IDM_EXIT                        105
#define IDS_HELLO                        106
#define IDI_FE                107
#define IDI_SMALL                        108
#define IDC_FE                109
#define IDC_MYICON                        2
#define IDC_STATIC                        -1
// Next default values for new objects
//
#ifdef APSTUDIO_INVOKED
#ifndef APSTUDIO_READONLY_SYMBOLS

#define _APS_NEXT_RESOURCE_VALUE        129
#define _APS_NEXT_COMMAND_VALUE         32771
#define _APS_NEXT_CONTROL_VALUE         1000
#define _APS_NEXT_SYMED_VALUE           110
#endif
#endif

// stdafx.h : include file for standard system include files,
//  or project specific include files that are used frequently, but
//      are changed infrequently
//

#if !defined(AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_)
#define AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#define WIN32_LEAN_AND_MEAN        // Exclude rarely-used stuff from Windows headers


// Windows Header Files:
#include <windows.h>

// C RunTime Header Files
#include <stdlib.h>
#include <malloc.h>
#include <memory.h>
#include <tchar.h>

// Local Header Files

// TODO: reference additional headers your program requires here

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_)

main.cpp

#include "stdafx.h"
#include "resourse.h"

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE hInst;                                // current instance
TCHAR szTitle[MAX_LOADSTRING];                                // The title bar text
TCHAR szWindowClass[MAX_LOADSTRING];                                // The title bar text
HBITMAP hbmp;
HDC mdc;
// Foward declarations of functions included in this code module:
ATOM                MyRegisterClass(HINSTANCE hInstance);
BOOL                InitInstance(HINSTANCE, int);
LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK    About(HWND, UINT, WPARAM, LPARAM);
void                MyPaint(HDC hdc);
//========================================================================================
int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
     // TODO: Place code here.
    MSG msg;

    MyRegisterClass(hInstance);//调用函数向系统注册窗口类别，输入参数hInstance是目前运行程序的对象代码；

    // 调用InitInstance函数，进行初始化操作；
    if (!InitInstance (hInstance, nCmdShow))
    {
        return FALSE;
    }

    // 消息循环（通过消息循环来获取信息，
    //进行必要的键盘信息转换而后将控制权交给操作系统，
    //有操作系统决定哪个程序的消息处理函数处理消息
    while (GetMessage(&msg, NULL, 0, 0)) //获取程序消息
    {
            TranslateMessage(&msg);//转换伪码及字符
            DispatchMessage(&msg);//将控制权交给系统，再有系统决定负责处理消息的程序；
    }

    return msg.wParam;
}
//=====================================================================================



//=============================================================================================
//在建立程序窗口实体之前，必须先定义一个窗口类别，其中包含所要建立窗口的信息，
//并向系统注册，这里的MyRegisterClass函数就是进行定义及注册窗口类别的函数。
//==============================================================================================
ATOM MyRegisterClass(HINSTANCE hInstance)
{
    WNDCLASSEX wcex;            //申请一个窗口类别“WNDCLASSEX”和结构”wcex“
                                //--------------------------------------------------------------
                                //定义vcex结构的各项信息，其中设定信息处理函数（lpfnWndProc）
                                //为WNDPROC，类别名称为（lpszClassName）为”fe";
                                //--------------------------------------------------------------
    wcex.cbSize = sizeof(WNDCLASSEX);

    wcex.style            = CS_HREDRAW | CS_VREDRAW;
    wcex.lpfnWndProc    = (WNDPROC)WndProc;
    wcex.cbClsExtra        = 0;
    wcex.cbWndExtra        = 0;
    wcex.hInstance        = hInstance;
    wcex.hIcon            = NULL;
    wcex.hCursor        = NULL;
    wcex.hCursor        = LoadCursor(NULL,IDC_ARROW);
    wcex.hbrBackground    = (HBRUSH)(COLOR_WINDOW+1);
    wcex.lpszMenuName    = NULL;
    wcex.lpszClassName    = "fe";
    wcex.hIconSm        = NULL;

    return RegisterClassEx(&wcex);//调用RegisterClassEx函数注册类别，返回一个“ATOM"形态的字符串
                                  //此字符串即为类别名称”fe";
}
//============================================================================================


//============================================================================================
//按照前面所定义的窗口类别来建立并显示实际的程序窗口
//============================================================================================
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;
   HDC hdc;
   hInst = hInstance; // 把instance handle 储存在全局变量中；

   hWnd = CreateWindow("fe","绘图窗口",WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);
                      //-----------------------------------------------
                      //调用CreateWindow函数来建立一个窗口对象
                      //第一个参数就是窗口建立依据的类别名称
                      //-----------------------------------------------
   if (!hWnd)
   {
      return FALSE;
   }
   //------------------------------------------------
   //设定窗口的位置及窗口的大小，然后绘制显示在设备上
   //-------------------------------------------------
   MoveWindow(hWnd,10,10,600,450,true);//位置及大小
   ShowWindow(hWnd, nCmdShow);//改定窗口显示时的状态
   UpdateWindow(hWnd);//将窗口绘制在显示设备上

   hdc=GetDC(hWnd);
   mdc=CreateCompatibleDC(hdc);

   hbmp=(HBITMAP)LoadImage(NULL,"bg.bmp",IMAGE_BITMAP,600,450,LR_LOADFROMFILE);
   //名、类型、大小、加载方式；
   SelectObject(mdc,hbmp);

   MyPaint(hdc);

   ReleaseDC(hWnd,hdc);


   return TRUE;
}
//============================================================================================


//============================================================================================
//绘图函数，初始化函数中将图片已经放在mdc中了，现在将mdc再贴在窗口DC上
//============================================================================================
void MyPaint(HDC hdc)
{
    BitBlt(hdc,0,0,600,450,mdc,0,0,SRCCOPY);//在窗口位置、大小、原图剪切位
}
//============================================================================================


//============================================================================================
//在前面定义类别的时候把WndProc定义为消息处理函数（当某些外部消息发生时，会按消息的类型
//来决定该如何进行处理。此外该函数也是一个回叫函数（CALLBACK)（windows系统函数）每一个
//程序都会接收信息，选择性接受、处理；
//============================================================================================
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    PAINTSTRUCT ps;
    HDC hdc;

    switch (message)                   //判断消息类型
    {
        case WM_PAINT:                //窗口重绘制
            hdc = BeginPaint(hWnd, &ps);
            MyPaint(hdc);
            EndPaint(hWnd, &ps);
            break;
        case WM_DESTROY:              //处理窗口结束消息
            DeleteDC(mdc);
            DeleteObject(hbmp);
            PostQuitMessage(0);
            break;
        default:
            return DefWindowProc(hWnd, message, wParam, lParam);
   }
   return 0;
}
//============================================================================================