Qt烦人的错误

1、QT += printsupport

  在演练《Qt4图形设计与嵌入式开发》中ImageView的过程中,出现错误:

  

Error   1   error LNK2019: unresolved external symbol "__declspec(dllimport)      
public: virtual __thiscall QPrinter::~QPrinter(void)" (__imp_??1QPrinter@@UAE@XZ) 
referenced in function "private: void __thiscall ezXpns::on_loginButton_clicked(void)" (?
on_loginButton_clicked@ezXpns@@AAEXXZ)  
(path)\TestBuild_April3\TestBuild\ezxpns.obj    TestBuild

Error   2   error LNK2019: unresolved external symbol "__declspec(dllimport) 
public: __thiscall QPrinter::QPrinter(enum QPrinter::PrinterMode)" (__imp_??
0QPrinter@@QAE@W4PrinterMode@0@@Z) referenced in function "private: void __thiscall 
ezXpns::on_loginButton_clicked(void)" (?on_loginButton_clicked@ezXpns@@AAEXXZ)  
(path)\TestBuild_April3\TestBuild\ezxpns.obj    TestBuild

经过分析,我知道是QPrinter有问题,但是不知道如果解决,Google后,找到了解决方案,在项目的.pro文件中加入QT += printsupport就ok了。

2、QT+=sql

  当要进行数据库的操作时,请务必记住加入QT+=sql。

posted @ 2013-05-10 11:11  wiessharling  阅读(730)  评论(0编辑  收藏  举报