刚装好qt creator 运行示例程序报错，在命令行却可以编译

编译信息如下，忘高人指点。。Running build steps for project student...Configuration unchanged, skipping qmake step.Starting: "E:/soft/Qt/MinGW/bin/mingw32-make.exe" -wE:尀soft尀Qt尀MinGW尀bin尀mingw32-make.exe: Entering directory `D:/qt/student-build-desktop✀E:/soft/Qt/MinGW/bin/mingw32-make.exe -f Makefile.Debugmingw32-make.exe[1]: Entering directory `D:/qt/student-build-desktop✀g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -mthreads -Wl -Wl,-subsystem,windows -o debug尀student.exe debug/main.o debug/mainwindow.o debug/moc_mainwindow.o -L"e:尀soft尀Qt尀lib" -lmingw32 -lqtmaind -lQtGuid4 -lQtCored4mingw32-make.exe[1]: Leaving directory `D:/qt/student-build-desktop✀E:尀soft尀Qt尀MinGW尀bin尀mingw32-make.exe: Leaving directory `D:/qt/student-build-desktop✀E:尀soft尀Qt尀MinGW尀bin尀..尀lib尀gcc尀mingw32尀3.4.2尀..尀..尀..尀..尀mingw32尀bin尀ld.exe: cannot find -lqtmaindcollect2: ld returned 1 exit statusmingw32-make.exe[1]: *** [debug尀student.exe] Error 1E:尀soft尀Qt尀MinGW尀bin尀mingw32-make.exe: *** [debug] Error 2The process "E:/soft/Qt/MinGW/bin/mingw32-make.exe" exited with code %2.Error while building project student (target: Desktop)When executing build step ✀Make✀