我是QT的新手。我为Windows制作了一个包含QWebView和QMessageBox的应用程序。我想根据QMainwindow的大小调整这两个大小。例如，如果主窗口的大小为300*200，则QWebView和QMessageBox的大小应相同。另外，我希望能够在运行我的应用程序时调整它的大小。
有人可以告诉我该怎么做吗？
答案 0 :(得分：0)
首先，我认为您应该制作$ make
Scanning dependencies of target cpp_factory
[ 11%] Building CXX object CMakeFiles/cpp_factory.dir/libraries/src/FileLister.cpp.o
In file included from /home/ub1404/Application/cpp_factory/libraries/src/FileLister.cpp:5:0:
/home/ub1404/Application/cpp_factory/libraries/include/cpp_factory/files/FileLister.h: In constructor ‘FilesList::FilesList(const string&, const string&, const FileSorter&)’:
/home/ub1404/Application/cpp_factory/libraries/include/cpp_factory/files/FileLister.h:109:57: error: no matching function for call to ‘sort(std::vector<boost::filesystem::path>::iterator, std::vector<boost::filesystem::path>::iterator, const FileSorter&)’
std::sort(this->begin(), this->end(), fileSorter);
^
/home/ub1404/Application/cpp_factory/libraries/include/cpp_factory/files/FileLister.h:109:57: note: candidates are:
In file included from /usr/include/c++/4.8/algorithm:62:0,
from /home/ub1404/Application/cpp_factory/libraries/include/cpp_factory/files/FileLister.h:11,
from /home/ub1404/Application/cpp_factory/libraries/src/FileLister.cpp:5:
/usr/include/c++/4.8/bits/stl_algo.h:5447:5: note: template<class _RAIter> void std::sort(_RAIter, _RAIter)
sort(_RandomAccessIterator __first, _RandomAccessIterator __last)
^
/usr/include/c++/4.8/bits/stl_algo.h:5447:5: note: template argument deduction/substitution failed:
In file included from /home/ub1404/Application/cpp_factory/libraries/src/FileLister.cpp:5:0:
/home/ub1404/Application/cpp_factory/libraries/include/cpp_factory/files/FileLister.h:109:57: note: candidate expects 2 arguments, 3 provided
std::sort(this->begin(), this->end(), fileSorter);
^
In file included from /usr/include/c++/4.8/algorithm:62:0,
from /home/ub1404/Application/cpp_factory/libraries/include/cpp_factory/files/FileLister.h:11,
from /home/ub1404/Application/cpp_factory/libraries/src/FileLister.cpp:5:
/usr/include/c++/4.8/bits/stl_algo.h:5483:5: note: template<class _RAIter, class _Compare> void std::sort(_RAIter, _RAIter, _Compare)
sort(_RandomAccessIterator __first, _RandomAccessIterator __last,
^
/usr/include/c++/4.8/bits/stl_algo.h:5483:5: note: template argument deduction/substitution failed:
/usr/include/c++/4.8/bits/stl_algo.h: In substitution of ‘template<class _RAIter, class _Compare> void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<boost::filesystem::path*, std::vector<boost::filesystem::path> >; _Compare = FileSorter]’:
/home/ub1404/Application/cpp_factory/libraries/include/cpp_factory/files/FileLister.h:109:57: required from here
/usr/include/c++/4.8/bits/stl_algo.h:5483:5: error: cannot allocate an object of abstract type ‘FileSorter’
In file included from /home/ub1404/Application/cpp_factory/libraries/src/FileLister.cpp:5:0:
/home/ub1404/Application/cpp_factory/libraries/include/cpp_factory/files/FileLister.h:49:8: note: because the following virtual functions are pure within ‘FileSorter’:
struct FileSorter{
^
/home/ub1404/Application/cpp_factory/libraries/include/cpp_factory/files/FileLister.h:51:18: note: virtual bool FileSorter::operator()(const boost::filesystem::path&, const boost::filesystem::path&) const
virtual bool operator()(const boost::filesystem::path& p1, const boost::filesystem::path& p2) const =0;
^
make[2]: *** [CMakeFiles/cpp_factory.dir/libraries/src/FileLister.cpp.o] Error 1
make[1]: *** [CMakeFiles/cpp_factory.dir/all] Error 2
make: *** [all] Error 2
的{{1}}和QMessageBox个小部件。QWebView。您应该在QMainWindow文件中输入以下内容：
.cpp包含MyApp::MyApp(QWidget *parent)
: QMainWindow(parent)
{
mView = new QWebView(this);
mMessageBox = new QMessageBox(this);
// some other code
}
文件的mView和mMessageBox个私有元素。
对于大小，如果您没有指定任何内容，您应该能够根据需要调整大小。或者，如果您想尝试固定尺寸，只需添加此行而不是.h：
//some other code