/**
- @brief FuncModuleWin::copyFile
- @param fromFIleName 優盤裡面的檔案
- @param toFileName 拷貝到/bin裡面的啟動檔案
-
@return
/
bool FuncModuleWin::copyFile(const QString &fromFIleName, const QString &toFileName)
{
char byteTemp = new char[4096];//位元組數組
int fileSize = 0;
int totalCopySize = 0;
QFile tofile;
ui->progressBar_copy->setValue(0);
tofile.setFileName(toFileName);
tofile.open(QIODevice::WriteOnly)
QDataStream out(&tofile);
out.setVersion(QDataStream::Qt_4_8);
QFile fromfile;
fromfile.setFileName(fromFIleName);
if(!fromfile.open(QIODevice::ReadOnly)){
qDebug() << “open fromfile failed!!!”;
return false;
}
fileSize = fromfile.size();
QDataStream in(&fromfile);
in.setVersion(QDataStream::Qt_4_8);
ui->progressBar_copy->setRange(0, fileSize);
while(!in.atEnd())
{
int readSize = 0;
//讀入位元組數組,傳回讀取的位元組數量,如果小于4096,則到了檔案尾
readSize = in.readRawData(byteTemp, 4096);
out.writeRawData(byteTemp, readSize);
totalCopySize += readSize;
ui->progressBar_copy->setValue(totalCopySize);
}
if(totalCopySize == fileSize){
tofile.setPermissions(QFile::ExeUser);
return true;
}
else
return false;
}
原文中缺少“ tofile.open(QIODevice::WriteOnly)”,即建立輸出檔案以及讀寫方式。
轉自:轉載路徑