实例讲解C++中CopyFileEx函数的简单用法

 /**//*************************************************************/
//
//    CopyFileEx 回调函数应用
/**//*************************************************************/

#define        _WIN32_WINNT    0x0500            // 不加这个不同通过编译
#include <windows.h>
#include <stdio.h>

DWORD CALLBACK CopyProgress(
    LARGE_INTEGER TotalFileSize,            // total file size, in bytes
    LARGE_INTEGER TotalBytesTransferred,    // total number of bytes transferred
    LARGE_INTEGER StreamSize,                // total number of bytes for this stream
    LARGE_INTEGER StreamBytesTransferred,    // total number of bytes transferred for this stream
    DWORD dwStreamNumber,                    // the current stream
    DWORD dwCallbackReason,                    // reason for callback
    HANDLE hSourceFile,                        // handle to the source file
    HANDLE hDestinationFile,                // handle to the destination file
    LPVOID lpData                            // passed by CopyFileEx
)
...{
    static int nRecord = 0;
    nRecord++;
    printf("回调次数：%d    已传输：%08X:%08X    文件大小：%08X:%08X ",
        nRecord,
        TotalBytesTransferred.HighPart,
        TotalBytesTransferred.LowPart,
        TotalFileSize.HighPart,
        TotalFileSize.LowPart);

    return PROGRESS_CONTINUE;
}
int main(int argc, char* argv[])
...{
    if(argc!=3)
    ...{
        printf("用法：命令 源文件 目标文件");
        return 0;
    }

    if(!CopyFileEx(argv[1],argv[2],(LPPROGRESS_ROUTINE)CopyProgress,NULL,FALSE,COPY_FILE_FAIL_IF_EXISTS))
    ...{
        printf("CopyFileEx() failed.");
        return 0;
    }
    return 0;