title: error with Qt libraries in visual c++ application
body: <p>I am working with a Qt based project in visual c++. Initially I installed Qt 4.7.3 and imported its libraries in visual c++. Everything was working fine. yesterday, I ran "configure" command on command on command prompt. After that I am receiving error messages while compiling the program. </p>
  
  <p>So I uninstalled Qt 4.7.3 and installed 4.7.4 and configured again the libraries. But still I am receiving the same error messages. </p>
  
  <blockquote>
    <p>Qwt.lib(moc_qwt_scale_widget.obj) : error LNK2001: unresolved external symbol "public: static struct QMetaObject const QWidget::staticMetaObject" (?staticMetaObject@QWidget@@2UQMetaObject@@B)
    1>Qwt.lib(moc_qwt_dyngrid_layout.obj) : error LNK2001: unresolved external symbol "public: static struct QMetaObject const QLayout::staticMetaObject" (?staticMetaObject@QLayout@@2UQMetaObject@@B)
    1>..\Debug\project.exe : fatal error LNK1120: 9 unresolved externals
    1></p>
  </blockquote>
  
  <p>Can anyone please help me in this issue.</p>