添加的路径就是上面下载的QT安装位置里面的include文件夹

image.png

2、添加文件引用的lib静态库路径：工程---属性---配置属性---链接器---常规---附加库目录：加上lib文件存放目录。

image.png

3、然后添加工程引用的lib文件名：工程---属性---配置属性---链接器---输入---附加依赖项：加上lib文件名。

就是把这个路径的下的.lib的名字复制进去就行了

image.png

然后点击应用

再cpp文件里导入头文件

#include <maya/MQtUtil.h>
#include <QtWidgets/QWidget>
#include <QtWidgets/QPushButton>

再doIt里写入测试代码

QWidget* w = new QWidget(MQtUtil::mainWindow());
w->resize(500, 500);
w->setWindowFlags(Qt::Window);
w->setWindowTitle("CppQT");

QPushButton* test_button = new QPushButton("Test");
test_button->setParent(w);
test_button->move(0, 0);

w->show();

完整CPP

#include "CppQTCmd.h"
#include <maya/MGlobal.h>
#include <maya/MQtUtil.h>
#include <QtWidgets/QWidget>
#include <QtWidgets/QPushButton>

MStatus CppQT::doIt( const MArgList& )
//
//  Description:
//      implements the MEL CppQT command.
//
//  Arguments:
//      args - the argument list that was passes to the command from MEL
//
//  Return Value:
//      MS::kSuccess - command succeeded
//      MS::kFailure - command failed (returning this value will cause the 
//                     MEL script that is being run to terminate unless the
//                     error is caught using a "catch" statement.
//
{
    MStatus stat = MS::kSuccess;
    QWidget* w = new QWidget(MQtUtil::mainWindow());
    w->resize(500, 500);
    w->setWindowFlags(Qt::Window);
    w->setWindowTitle("CppQT");

    QPushButton* test_button = new QPushButton("Test");
    test_button->setParent(w);
    test_button->move(0, 0);

    w->show();
    // Typically, the doIt() method only collects the infomation required
    // to do/undo the action and then stores it in class members.  The 
    // redo method is then called to do the actuall work.  This prevents
    // code duplication.
    //
    return redoIt();
}

然后编译