VS2019+QT代码与QtCreator工程的互相转换

QT Creator的project转换成Visual Studio的project

在windows10下，运行Qt Command Prompt。

输入命令行：

qmake -tp vc XXX.pro

会生成文件XXX.vcxproj

Visual Studio的project转成QT Creator的project
第一步，因为原Visual Studio工程就是基于QT Template的工程，所以我们可以用VS里的QT插件里的"Create basic .pro file..."菜单选项来自动生成一个.pro文件，实际上，不仅仅生成了.pro 文件，还生成了.pri文件。但是目前的.pro文件还是不能用的，因为其中还有大量的配置需要修改，比如INCLUDEPATH和LIBS.

第二步，修改.pro文件使其包含正确而必要的配置信息。
总结笔者对.pro文件的具体修改如下：
1. TEMPLATE = lib
2. 将DESTDIR = xxx改成：
Release:DESTDIR = xxx/Release
Debug:DESTDIR = xxx/Debug
3. CONFIG += debug_and_release
4. 完善INCLUDEPATH
5. 完善DEPENDPATH （这里又有故事了：事后笔者发现，只要在LIBS里写了-L"<LIBPATH>"，就没必要写DEPENDPATH了。）
6. 加上 Release:DEPENDPATH 和 Debug:DEPENDPATH
7. 类似的，完善LIBS，添加Release:LIBS和Debug:LIBS

第三步，双击改好的.pro文件，QT Creator打开此工程，选中合适的Kit，就可以build了。因为是64位机器，Kit选的是QT 5.4.1的msvc2017_64.
最后千万要注意的是，在系统环境变量%PATH%里，对于Visual Studio的编译器cl.exe和链接器link.exe, 要选对路径。比如，对于64位的机器，路径 C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\bin\amd64 应该被加到%PATH%中，而不是 C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\bin 这一条在前一篇博文中已有详细阐述。

以上步骤做完后，就可以顺利地在QT Creator中进行build了。
最后还要提醒的一点是，如果更改了.pro文件，想让更改生效，必须手动删除qmake生成的Makefile, Makefile.Debug和Makefile.Release文件。

下面是一个.pro文件的实例：

 TEMPLATE = lib  
    TARGET = MyProject  
    Release:DESTDIR = ../../../Output/x64/Release  
    Debug:DESTDIR = ../../../Output/x64/Debug  
    QT += core qml  
    CONFIG += debug_and_release  
    DEFINES += WIN64 QT_DLL QT_QML_LIB MyProject_LIB  
      
    INCLUDEPATH += ./GeneratedFiles \  
        . \  
        ./GeneratedFiles/Release \  
       

(VCINCLUDE) (VCINCLUDE) 
(VC_INCLUDE)/../atlmfc/include \  
       

(WINSDKINCLUDE)/shared (WINSDKINCLUDE)/shared 
(WINSDK_INCLUDE)/um  
      
    DEPENDPATH += . \  
       

(WINSDKLIB)/um/x64 (WINSDKLIB)/um/x64 
(VC_LIB)/amd64 \  
       

(QTDIR)/lib (QTDIR)/lib 
(QTDIR)/bin \  
      
    Release:DEPENDPATH +=  ../../../3rd_library/opencv/libs/Release/x64 \  
        ../../../3rd_library/DirectShow/baseclasses/x64/Release  
      
    Debug:DEPENDPATH += ../../../3rd_library/opencv/libs/Debug/x64 \  
        ../../../3rd_library/DirectShow/baseclasses/x64/Debug  
      
    MOC_DIR += ./GeneratedFiles/release  
    OBJECTS_DIR += release  
    UI_DIR += ./GeneratedFiles  
    RCC_DIR += ./GeneratedFiles  
      
    Release:LIBS += -L"../../../3rd_library/DirectShow/baseclasses/x64/Release" \  
        -lstrmbase \  
        -L"../../../3rd_library/opencv/libs/Release/x64" \  
        -lqtmain \  
        -lQt5Qml \  
        -lQt5Core \  
        -lopencv_calib3d248 \  
        -lopencv_contrib248 \  
        -lopencv_core248 \  
        -lopencv_features2d248 \  
        -lopencv_flann248 \  
        -lopencv_gpu248 \  
        -lopencv_highgui248 \  
        -lopencv_imgproc248 \  
        -lopencv_legacy248 \  
        -lopencv_ml248 \  
        -lopencv_nonfree248 \  
        -lopencv_objdetect248 \  
        -lopencv_ocl248 \  
        -lopencv_photo248 \  
        -lopencv_stitching248 \  
        -lopencv_superres248 \  
        -lopencv_ts248 \  
        -lopencv_video248 \  
        -lopencv_videostab248  
      
    Debug:LIBS += -L"../../../3rd_library/DirectShow/baseclasses/x64/Debug" \  
        -lstrmbasd \  
        -L"../../../3rd_library/opencv/libs/Debug/x64" \  
        -lqtmaind \  
        -lQt5Qmld \  
        -lQt5Cored \  
        -lopencv_calib3d248d \  
        -lopencv_contrib248d \  
        -lopencv_core248d \  
        -lopencv_features2d248d \  
        -lopencv_flann248d \  
        -lopencv_gpu248d \  
        -lopencv_highgui248d \  
        -lopencv_imgproc248d \  
        -lopencv_legacy248d \  
        -lopencv_ml248d \  
        -lopencv_nonfree248d \  
        -lopencv_objdetect248d \  
        -lopencv_ocl248d \  
        -lopencv_photo248d \  
        -lopencv_stitching248d \  
        -lopencv_superres248d \  
        -lopencv_ts248d \  
        -lopencv_video248d \  
        -lopencv_videostab248d  
      
    LIBS += -L"

(WINSDKLIB)/um/x64" −L"(WINSDKLIB)/um/x64" −L"
(VC_LIB)/amd64" \  
        -L"

(QTDIR)/lib" −L"(QTDIR)/lib" −L"
(QTDIR)/bin" \  
        -lWtsapi32 \  
        -lPathcch \  
        -l3DScanningEngine \  
        -lUserenv \  
        -lwinmm \  
        -lMf \  
        -lMfplat  
      
    include(MyProject.pri)

VS2019+QT代码与QtCreator工程的互相转换

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