怎样使用CProgressCtrl显示文件拷贝的进度？

[counteagler]

CopyFile从硬盘向U盘拷文件，想用CProgressCtrl显示拷贝的进度，请达人赐教，最好有代码。

[idAnts]

CProgressCtrl m_progress;
先得到文件总数n，然后m_progress.SetRange(0,n);
m_progress.SetStep(1);
m_progress.SetPos(0);

然后创建线程复制文件，每复制一个，给主窗口发个自定义消息WM_COPYED，收到消息后：
m_progress.StepIt();

[elyta]

我好像已经在另一版回复过你的这个问题了哦！

用以下两个函数：
BOOL CopyFileEx(LPCTSTR lpExistingFileName, // name of existing file
LPCTSTR lpNewFileName, // name of new file
LPPROGRESS_ROUTINE lpProgressRoutine, // callback function
LPVOID lpData, // callback parameter
LPBOOL pbCancel, // cancel status
DWORD dwCopyFlags // copy options
);

DWORD CALLBACK CopyProgressRoutine(
LARGE_INTEGER TotalFileSize, // file size
LARGE_INTEGER TotalBytesTransferred, // bytes transferred
LARGE_INTEGER StreamSize, // bytes in stream
LARGE_INTEGER StreamBytesTransferred, // bytes transferred for stream
DWORD dwStreamNumber, // current stream
DWORD dwCallbackReason, // callback reason
HANDLE hSourceFile, // handle to source file
HANDLE hDestinationFile, // handle to destination file
LPVOID lpData // from CopyFileEx
);

比如
DWORD CALLBACK MyCopyProgressRoutine(LARGE_INTEGER TotalFileSize, // file size
LARGE_INTEGER TotalBytesTransferred, // bytes transferred
LARGE_INTEGER StreamSize, // bytes in stream
LARGE_INTEGER StreamBytesTransferred, // bytes transferred for stream
DWORD dwStreamNumber, // current stream
DWORD dwCallbackReason, // callback reason
HANDLE hSourceFile, // handle to source file
HANDLE hDestinationFile, // handle to destination file
LPVOID lpData // from CopyFileEx
)
{
CDialogTest* ptr = (CDialogTest*)lpData;
// do something with pointer, e.g. ptr->m_Progressbar.Pos blahblah

DWORD percent = TotalBytesTransferred*100/TotalFileSize;
return TRUE;
}

BOOL CDialogTest::Copy(CString from, CString to)
{
BOOL cancel;
return CopyFileEx( from, to, (LPPROGRESS_ROUTINE)MyCopyProgressRoutine, (this)this, &cancel, FALSE);
}