streamwriter用法_getmodulefilename_writeprivateprofilestring(4)

QString strKey(strKeyName + "=");

QFile readFile(strFileName);

//打开失败，返回默认字符串及其长度

if (!readFile.open(QFile::ReadOnly | QIODevice::Text))

{

return StrCopy(strDefault, pReturnedValue, size);

}

QTextStream readStream(&readFile);

while (!readStream.atEnd())

{

QString line(readStream.readLine());

if(line.indexOf(strSection) == 0)//找到Section

{

line = readStream.readLine();

while(line.indexOf(strKey) != 0 && line.indexOf("[") != 0 && !readStream.atEnd())

{

line = readStream.readLine();

}

if (line.indexOf(strKey) == 0)//找到Key

{

QString source(line.mid(strKey.length()));

readFile.close();

return StrCopy(source, pReturnedValue, size);

}

}

}

readFile.close();

//未找到，返回默认值及其长度

return StrCopy(strDefault, pReturnedValue, size);

}

//************************************

// Method: StrCopy

// FullName: MyClass::StrCopy

// Access: Private

// Returns: int

// Parameter: QString source

// Parameter: char *dest

// Parameter: int size

//************************************

int MyClass::StrCopy(QString source, char *dest, int size)

{

QByteArray temp = source.toAscii();

//拷贝字符串；

//size合适，返回不加'/0'的字符串长度

if(source.length() <= size - 1)

{

strcpy(dest, temp.data());

return source.length();

}

//拷贝字符串；

//size过小，返回size-1

else

{

strncpy(dest, temp.data(), size-1);

dest[size - 1] = '/0';

return size-1;

}

}

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