本文整理汇总了C++中QStringRef::clear方法的典型用法代码示例。如果您正苦于以下问题：C++ QStringRef::clear方法的具体用法？C++ QStringRef::clear怎么用？C++ QStringRef::clear使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QStringRef的用法示例。
在下文中一共展示了QStringRef::clear方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: validateExtension
bool ImageLoader::validateExtension(QString filename) const {
/**
* Assumption OS does not allow an empty filename (excluding exten-
* sion) to be used for files, thus is it pointless to provide only
* the extension to the file.
*/
QStringRef ref = filename.midRef(filename.length()-3,3);
if(ref.compare(".sr",Qt::CaseInsensitive) == 0){
return true;
}
//if filename is smaller than 5 it can not be valid anymore
if(filename.length() < 5) return false;
ref.clear();
ref = filename.midRef(filename.length()-4,4);
if(ref.compare(".bmp",Qt::CaseInsensitive) == 0
|| ref.compare(".dib",Qt::CaseInsensitive) == 0
|| ref.compare(".jpg",Qt::CaseInsensitive) == 0
|| ref.compare(".jpe",Qt::CaseInsensitive) == 0
|| ref.compare(".png",Qt::CaseInsensitive) == 0
|| ref.compare(".pbm",Qt::CaseInsensitive) == 0
|| ref.compare(".pgm",Qt::CaseInsensitive) == 0
|| ref.compare(".ppm",Qt::CaseInsensitive) == 0
|| ref.compare(".ras",Qt::CaseInsensitive) == 0
|| ref.compare(".tif",Qt::CaseInsensitive) == 0 ){
return true;
}
//if filename is smaller than 6 it can not be valid anymore
if(filename.length() < 6) return false;
ref.clear();
ref = filename.midRef(filename.length()-5,5);
if(ref.compare(".jpeg",Qt::CaseInsensitive) == 0
|| ref.compare(".tiff",Qt::CaseInsensitive) == 0 ){
return true;
}
//none of the cases matched.
return false;
}