问题
I am new to Qt. Downloaded source code for a Qt application of SourceForge, and tried to build and run it. After working through a few similar problems by adding QT += statements to .pro files, I am stuck on this one:
On attempting to build in Qt Creator, I get errors saying
error: C1083: Cannot open include file: 'QPrinter': No such file or directory
I tried adding QT += printsupport to the .pro file, cleaning, and rebuilding, but that gives this error
Error: dependent '..\..\..\..\..\..\..\..\..\..\..\Qt\Qt5.1.1\5.1.1\msvc2012_64\include\QtPrintSupport\qtprintsupportglobal.h' does not exist."
When I go to C:\Qt\Qt5.1.1\5.1.1\msvc2012_64\include\QtPrintSupport, qtprintsupportglobal.h IS THERE!
回答1:
You have to add QPrinter Support to your project's .pro file:
QT += printsupport
回答2:
In my case the solution was to
Delete the shadow build directory and build again
after adding printsupport, as @KubaOber suggests in the comments.
来源：https://stackoverflow.com/questions/19145763/qt-cannot-open-include-file-qprinter