QT | about the problem that QT creator cannot open the project and compile it

Preface ：

First use of pure Qt Creator Carry out project development , adopt SVN Put the code down After coming down , use Qt Creator Open the project , Found project loading 、 There are many problems when compiling the project , Record the solutions to some problems here , I will add .

Question 1 ：Qt Creator When opening a project, stay in reading project Status issues .

stay Qt Creator Open the project we want to start , At this time, the project needs a loading process , But I found that the project has been stuck in “reading project” The state of , stay Qt Creator In the performance of , The progress box in the lower right corner stays at “reading project xxx”.

What is the reason for this problem , Using someone else's Qt Project file ,Qt Of .user The file saves previous project information , It needs to be deleted in order to work properly .

terms of settlement ：

  Delete all items in the project directory user file , Then reopen the project .

Question two ：Qt The project is migrated to other computers , Compile and run failed , The compilation path is still displayed as the compilation path on the original computer .

When we put... On the computer Qt When the project is copied to another computer , Due to the change of project path , This will result in an error during compilation , Error message xxx Wrong path , Or can't find it xxx route . The premise is that our project itself has no problem compiling and running on the original computer .

What is the reason for this problem , The compilation path has changed , We didn't update the compilation path .

terms of settlement ：

• take .pro and .user File deletion , recompile .

• If the method still doesn't work after trying , Just put... Under the project directory “build-untitled-Desktop_Qt_5_5_1_MSVC2013_32bit-Debug” and “build-untitled-Desktop_Qt_5_5_1_MSVC2013_32bit-Release” Folder deletion , Recompile run .

Question 3 ：Qt Creator Changed the page layout in the design , It doesn't take effect after compiling and running .

When we are modifying the page layout of the project , Sometimes it is directly modified in the design module , At this time, the effect after compilation and operation remains the same as that before modification , Our amendment did not take effect .

What is the reason for this problem , The project compilation did not recompile our changes .

terms of settlement ：

Click the component in the menu bar , choice “ Clean up the project ”, After cleaning, select “ Build the project ”.