利用GetCharWidth32获取字符串宽度2

///////////////////////////////////////////////////////////////
// 04FirstWindow.cpp文件



#include <windows.h>
#include<stdio.h>
// 窗口函数的函数原形
LRESULT CALLBACK MainWndProc(HWND, UINT, WPARAM, LPARAM);

int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
    char szClassName[] = "MainWClass";    
    WNDCLASSEX wndclass;
    
    // 用描述主窗口的参数填充WNDCLASSEX结构
    wndclass.cbSize = sizeof(wndclass);    // 结构的大小
    wndclass.style = CS_HREDRAW|CS_VREDRAW;    // 指定如果大小改变就重画
    wndclass.lpfnWndProc = MainWndProc;    // 窗口函数指针
    wndclass.cbClsExtra = 0;        // 没有额外的类内存
    wndclass.cbWndExtra = 0;        // 没有额外的窗口内存
    wndclass.hInstance = hInstance;        // 实例句柄 
    wndclass.hIcon = ::LoadIcon(NULL, 
            IDI_APPLICATION);    // 使用预定义图标
    wndclass.hCursor = ::LoadCursor(NULL,
            IDC_ARROW);        // 使用预定义的光标
    wndclass.hbrBackground = (HBRUSH)
        ::GetStockObject(WHITE_BRUSH);    // 使用白色背景画刷
    wndclass.lpszMenuName = NULL;        // 不指定菜单
    wndclass.lpszClassName = szClassName ;    // 窗口类的名称    
    wndclass.hIconSm = NULL;        // 没有类的小图标
    
    // 注册这个窗口类
    ::RegisterClassEx(&wndclass); 
    
    // 创建主窗口
    HWND hwnd = ::CreateWindowEx( 
        0,            // dwExStyle，扩展样式    
        szClassName,        // lpClassName，类名            
        "My first Window!",    // lpWindowName，标题        
        WS_OVERLAPPEDWINDOW,    // dwStyle，窗口风格    
        CW_USEDEFAULT,        // X，初始 X 坐标        
        CW_USEDEFAULT,        // Y，初始 Y 坐标        
        640,        // nWidth，宽度            
        480,        // nHeight，高度            
        NULL,            // hWndParent，父窗口句柄            
        NULL,            // hMenu，菜单句柄        
        hInstance,        // hlnstance，程序实例句柄        
        NULL) ;            // lpParam，用户数据            

    if(hwnd == NULL)
    {
        ::MessageBox(NULL, "创建窗口出错！", "error", MB_OK);
        return -1;
    }

    // 显示窗口，刷新窗口客户区
    ::ShowWindow(hwnd, nCmdShow);
    ::UpdateWindow(hwnd);
    
    // 从消息堆中取出消息
    MSG msg;    
    while(::GetMessage(&msg, NULL, 0, 0))
    {
        // 转化键盘消息
        ::TranslateMessage(&msg);
        // 将消息发送到相应的窗口函数
        ::DispatchMessage(&msg);
    }

    // 当GetMessage返回0时程序结束
    return msg.wParam;
}

    

LRESULT CALLBACK MainWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    char s[45];                    
    int rowwidth;                    
    int ig = 0, ir = 0, ie = 0;        
    char    Test[] = "Yesterday,
All my troubles seemed so far away,
Now it looks as though they're here to stay,
Oh, I believe in yesterday.
Suddenly,
I'm not half the man I used to be,
There's a shadow hanging over me,
Oh, yesterday came suddenly.
Why she
Had to go I don't know, she wouldn't say.
I said,
Something wrong, now I long for yesterday.
Yesterday,
Love was such an easy game to play,
Now I need a place to hide away,
Oh, I believe in yesterday.
Why she
Had to go I don't know, she wouldn't say.
I said,
Something wrong, now I long for yesterday.
Yesterday,
Love was such an easy game to play,
Now I need a place to hide away,
Oh, I believe in yesterday.";
    char    szT[]= "Yesterday,
";
    char szText[] = "最简单的窗口程序！";
    int sum=0;
    switch (message)
    {         
    case WM_PAINT: // 窗口客户区需要重画
        {
            HDC hdc;
            PAINTSTRUCT ps;
        
            // 使无效的客户区变的有效，并取得设备环境句柄
            hdc = ::BeginPaint (hwnd, &ps) ;    
            // 显示文字
            ::TextOut(hdc, 10, 10, szText, strlen(szText));
            ::EndPaint(hwnd, &ps);
            return 0;
        }    
    case WM_CREATE:
    
        HDC   hdc ;
        HFONT    hFont; 
        int arr[91];
        FILE * pFile;
        SIZE sz; 
        fopen_s (&pFile,"file.txt","w+");
        hdc = GetDC(hwnd);         
        hFont = CreateFont(-15, 0,0,0, FW_BOLD, false, false, false, 
                DEFAULT_CHARSET,OUT_DEFAULT_PRECIS, 
                CLIP_DEFAULT_PRECIS, ANTIALIASED_QUALITY, DEFAULT_PITCH,"Arial");
        SelectObject(hdc, hFont); 
        //GetTextExtentPoint32(hdc,szT,strlen(szT),&sz);
        //fprintf(pFile,"w=%ld,h=%ld
",sz.cx,sz.cy);
        GetCharWidth32(hdc,32,122,arr);
        //for(int i=0;i<91;i++)
        //    fprintf(pFile,"%c-->%d
",' '+i,arr[i]);
    /*    for(int i=0;(szT[i]!='')&&(szT[i]!='
');i++)
        {
            fprintf(pFile,"%c--> %d
",szT[i],arr[int(szT[i])-32]);
            sum=sum+arr[int(szT[i])-32];
        }*/
        while(ie < 520)
        {
        //如果句子不是换行或者结尾,s数组保存每个句子
        
            if ((Test[ig] != '
') && (Test[ig] != 0))
            {
                s[ir++] = Test[ig];
            }
            //如果是结尾
            else
            {
                sum=0;
                s[ir] = 0;                                //添加字符串结束符
                for(int i=0;s[i]!='';i++)
                {
                    sum=sum+arr[int(s[i])-32];
                }
                rowwidth = sum;       //获得字符串宽度
                fprintf(pFile,"%d
",rowwidth);
                for(int i = 0; i < ir; i++)
                {
                    if (s[i] != ' ')
                    {
                        ie++;
                    }
                
                }
                ir = 0;
            }
            ig++;
        }
        /*fprintf(pFile,"sum= %d",sum);*/
        fclose(pFile);
        return 0;
    case WM_DESTROY: // 正在销毁窗口

        // 向消息队列投递一个WM_QUIT消息，促使GetMessage函数返回0，结束消息循环
        ::PostQuitMessage(0) ;
        return 0 ;
    }

    // 将我们不处理的消息交给系统做默认处理
    return ::DefWindowProc(hwnd, message, wParam, lParam);
}