在顯示進度時需要顯示百分比從0%---100%,添加Edit control控件,在文件拷貝時往往需要線程來做拷貝,從線程中發現消息給控件,SendMessage(GetDlgItem(hWndDlg,IDC_EDIT_PROGRESS),WM_SETTEXT,0,(LPARAM)lpszprogress),此時需注意第四個參數,若工程屬性用的是Use Multi-Byte Character Set,第四個參數直接傳CString會顯示亂碼,正確方式如下:
float fRange = 100.0*TotalBytesTransferred.LowPart/TotalFileSize.LowPart;
CString strEdit = _T("");
strEdit.Format("%.0f%%",(float)fRange);
LPTSTR lpszProgress = new TCHAR[strEdit.GetLength()+1];
_tcscpy(lpszProgress,strEdit);
SendMessage(GetDlgItem(hWndDlg,IDC_EDIT3),WM_SETTEXT,0,(LPARAM)lpszProgress);
delete []lpszProgress;
lpszProgress = NULL;