How to update progress bar from CopyFileEx function

[reachb4]

Hi,
i am using CopyFileEx function to copy a large file. I need to display progress bar to give update to the user.

I have written the following callback function:

DWORD CALLBACK   CopyProgressRoutine(LARGE_INTEGER TotalFileSize,
								   LARGE_INTEGER TotalBytesTransferred,
								   LARGE_INTEGER StreamSize,
								   LARGE_INTEGER StreamBytesTransferred,
							       DWORD dwStreamNumber,
								   DWORD dwCallbackReason,
								   HANDLE hSourceFile,
								   HANDLE hDestinationFile,
								   LPVOID lpData)

{
	long lTotalSize = (TotalBytesTransferred.QuadPart / TotalFileSize.QuadPart * 100);


	//m_FileCopyProgress.SetPos(lTotalSize);

	return PROGRESS_CONTINUE;

}

How can i update the progress bar in a dialog from the above callback function.

Please advice.

Thanks in advance,
John.

[Alex F]

When you call CopyFileEx from the dialog class, pass dialog handle as lpData parameter. Now CopyProgressRoutine gets this handle through its lpData. Post user-defined message to this handle, with lTotalSize in WPARAM. In the dialog, handle this message and set progressbar value.

[reachb4]

Perfect.. Thank you. Reps added