把Qt的界面文件（.ui文件）生成源文件（.h或.cpp）封装成链接库_uic 生成cpp和h

前言

在用Qt做开发时，为了方便快速，一般都使用Qt设计师界面类来做界面相关的布局，这个类在当前工程中是没有.cpp或.h文件的，但主类又有引入了这个头文件，点开转到定义或声明时，是打不开的，如下图：

如果要把整个项目导成dll和lib,就按当前的文件导出，是会报找不到ui_XXX类的路径的。那什么样才能把设计好的.ui界面导成dll和lib呢，看了好多种办法，有真接是用手写代码的方式去而已界面，这样的工作量有点。下面我演示下我觉得可行办法，虽然有些笨，但起码可以调用。

解决方法

1.新建一个工程，包含.ui文件，然后打开.ui文件拖入想要的控件,保存，编译.ui文件。

2.打开当前工程，找到目录下的.ui文件，复制下来，新建一个目录把它放进去。

3.然后去qt安路径下找到uic.exe文件，也把它复制到刚刚放.ui文件的目录下，此时当前目录只有两个文件。


4.按住窗口加R件，输入cmd，进入控件台界面，运行uic xxx.ui -o xxx.h或者uic xxx.ui -o xxx.cpp,在当前目录下就多了一个.h或者.cpp文件，这两个文件只要一个就可以了。

5.新建一个工程,选择类库。

6.把刚才生成的.h文件导入到当前工程，然后打开刚刚生成的源码，我们可以看到整个类的所有属性和成员函数。
.ui文件生成的.h文件

/********************************************************************************
** Form generated from reading UI file 'QtGuiDllDemo.ui'
**
** Created by: Qt User Interface Compiler version 5.7.1
**
** WARNING! All changes made in this file will be lost when recompiling UI file!
********************************************************************************/

#ifndef QTGUIDLLDEMO_H
#define QTGUIDLLDEMO_H

#include <QtCore/QVariant>
#include <QtWidgets/QAction>
#include <QtWidgets/QApplication>
#include <QtWidgets/QButtonGroup>
#include <QtWidgets/QHeaderView>
#include <QtWidgets/QMainWindow>
#include <QtWidgets/QMenu>
#include <QtWidgets/QMenuBar>
#include <QtWidgets/QPushButton>
#include <QtWidgets/QStatusBar>
#include <QtWidgets/QToolBar>
#include <QtWidgets/QWidget>

QT_BEGIN_NAMESPACE

class Ui_QtGuiDllDemoClass
{
public:
    QAction *actionOpen;
    QWidget *centralWidget;
    QPushButton *pushButton;
    QPushButton *pushButton_2;
    QMenuBar *menuBar;
    QMenu *menu;
    QToolBar *mainToolBar;
    QStatusBar *statusBar;

    void setupUi(QMainWindow *QtGuiDllDemoClass)
    {
        if (QtGuiDllDemoClass->objectName().isEmpty())
            QtGuiDllDemoClass->setObjectName(QStringLiteral("QtGuiDllDemoClass"));
        QtGuiDllDemoClass->resize(1046, 786);
        actionOpen = new QAction(QtGuiDllDemoClass);
        actionOpen->setObjectName(QStringLiteral("actionOpen"));
        centralWidget = new QWidget(QtGuiDllDemoClass);
        centralWidget->setObjectName(QStringLiteral("centralWidget"));
        pushButton = new QPushButton(centralWidget);
        pushButton->setObjectName(QStringLiteral("pushButton"));
        pushButton->setGeometry(QRect(330, 210, 231, 111));
        pushButton_2 = new QPushButton(centralWidget);
        pushButton_2->setObjectName(QStringLiteral("pushButton_2"));
        pushButton_2->setGeometry(QRect(400, 430, 231, 81));
        QtGuiDllDemoClass->setCentralWidget(centralWidget);
        menuBar = new QMenuBar(QtGuiDllDemoClass);
        menuBar->setObjectName(QStringLiteral("menuBar"));
        menuBar->setGeometry(QRect(0, 0, 1046, 23));
        menu = new QMenu(menuBar);
        menu->setObjectName(QStringLiteral("menu"));
        QtGuiDllDemoClass->setMenuBar(menuBar);
        mainToolBar = new QToolBar(QtGuiDllDemoClass);
        mainToolBar->setObjectName(QStringLiteral("mainToolBar"));
        QtGuiDllDemoClass->addToolBar(Qt::TopToolBarArea, mainToolBar);
        statusBar = new QStatusBar(QtGuiDllDemoClass);
        statusBar->setObjectName(QStringLiteral("statusBar"));
        QtGuiDllDemoClass->setStatusBar(statusBar);

        menuBar->addAction(menu->menuAction());
        menu->addAction(actionOpen);

        retranslateUi(QtGuiDllDemoClass);

        QMetaObject::connectSlotsByName(QtGuiDllDemoClass);
    } // setupUi

    void retranslateUi(QMainWindow *QtGuiDllDemoClass)
    {
        QtGuiDllDemoClass->setWindowTitle(QApplication::translate("QtGuiDllDemoClass", "QtGuiDllDemo", Q_NULLPTR));
        actionOpen->setText(QApplication::translate("QtGuiDllDemoClass", "open", Q_NULLPTR));
        pushButton->setText(QApplication::translate("QtGuiDllDemoClass", "\346\216\247\344\273\266", Q_NULLPTR));
        pushButton_2->setText(QApplication::translate("QtGuiDllDemoClass", "\347\225\214\351\235\242", Q_NULLPTR));
        menu->setTitle(QApplication::translate("QtGuiDllDemoClass", "\346\226\207\344\273\266", Q_NULLPTR));
    } // retranslateUi

};

namespace Ui {
    class QtGuiDllDemoClass: public Ui_QtGuiDllDemoClass {};
} // namespace Ui

QT_END_NAMESPACE
#endif // QTGUIDLLDEMO_H
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7.按qt给的格式把.h更改之后加到当前类的下面。
在当前工程的类加了ui类的.h文件

#pragma once

#include "guidlltest_global.h"
#include <QtCore/QVariant>
#include <QtWidgets/QAction>
#include <QtWidgets/QApplication>
#include <QtWidgets/QButtonGroup>
#include <QtWidgets/QHeaderView>
#include <QtWidgets/QMainWindow>
#include <QtWidgets/QMenu>
#include <QtWidgets/QMenuBar>
#include <QtWidgets/QPushButton>
#include <QtWidgets/QStatusBar>
#include <QtWidgets/QToolBar>
#include <QtWidgets/QWidget>

class GUIDLLTEST_EXPORT GuiDllTest
{
public:
	GuiDllTest();
};

QT_BEGIN_NAMESPACE

class GUIDLLTEST_EXPORT Ui_QtGuiDllDemoClass
{
public:
	QAction *actionOpen;
	QWidget *centralWidget;
	QPushButton *pushButton;
	QPushButton *pushButton_2;
	QMenuBar *menuBar;
	QMenu *menu;
	QToolBar *mainToolBar;
	QStatusBar *statusBar;

	void setupUi(QMainWindow *QtGuiDllDemoClass);

	void retranslateUi(QMainWindow *QtGuiDllDemoClass);

};

namespace Ui {
	class QtGuiDllDemoClass : public Ui_QtGuiDllDemoClass {};
} // namespace Ui

QT_END_NAMESPACE

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加了ui类的.cpp文件

#include "GuiDllTest.h"

GuiDllTest::GuiDllTest()
{
}

void Ui_QtGuiDllDemoClass::setupUi(QMainWindow *QtGuiDllDemoClass)
{
	if (QtGuiDllDemoClass->objectName().isEmpty())
		QtGuiDllDemoClass->setObjectName(QStringLiteral("QtGuiDllDemoClass"));
	QtGuiDllDemoClass->resize(1046, 786);
	actionOpen = new QAction(QtGuiDllDemoClass);
	actionOpen->setObjectName(QStringLiteral("actionOpen"));
	centralWidget = new QWidget(QtGuiDllDemoClass);
	centralWidget->setObjectName(QStringLiteral("centralWidget"));
	pushButton = new QPushButton(centralWidget);
	pushButton->setObjectName(QStringLiteral("pushButton"));
	pushButton->setGeometry(QRect(330, 210, 231, 111));
	pushButton_2 = new QPushButton(centralWidget);
	pushButton_2->setObjectName(QStringLiteral("pushButton_2"));
	pushButton_2->setGeometry(QRect(400, 430, 231, 81));
	QtGuiDllDemoClass->setCentralWidget(centralWidget);
	menuBar = new QMenuBar(QtGuiDllDemoClass);
	menuBar->setObjectName(QStringLiteral("menuBar"));
	menuBar->setGeometry(QRect(0, 0, 1046, 23));
	menu = new QMenu(menuBar);
	menu->setObjectName(QStringLiteral("menu"));
	QtGuiDllDemoClass->setMenuBar(menuBar);
	mainToolBar = new QToolBar(QtGuiDllDemoClass);
	mainToolBar->setObjectName(QStringLiteral("mainToolBar"));
	QtGuiDllDemoClass->addToolBar(Qt::TopToolBarArea, mainToolBar);
	statusBar = new QStatusBar(QtGuiDllDemoClass);
	statusBar->setObjectName(QStringLiteral("statusBar"));
	QtGuiDllDemoClass->setStatusBar(statusBar);

	menuBar->addAction(menu->menuAction());
	menu->addAction(actionOpen);

	retranslateUi(QtGuiDllDemoClass);

	QMetaObject::connectSlotsByName(QtGuiDllDemoClass);
} // setupUi

void Ui_QtGuiDllDemoClass::retranslateUi(QMainWindow *QtGuiDllDemoClass)
{
	QtGuiDllDemoClass->setWindowTitle(QApplication::translate("QtGuiDllDemoClass", "QtGuiDllDemo", Q_NULLPTR));
	actionOpen->setText(QApplication::translate("QtGuiDllDemoClass", "open", Q_NULLPTR));
	pushButton->setText(QApplication::translate("QtGuiDllDemoClass", "\346\216\247\344\273\266", Q_NULLPTR));
	pushButton_2->setText(QApplication::translate("QtGuiDllDemoClass", "\347\225\214\351\235\242", Q_NULLPTR));
	menu->setTitle(QApplication::translate("QtGuiDllDemoClass", "\346\226\207\344\273\266", Q_NULLPTR));
} // retranslateUi

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8.重新生成解决方案，就在当前目录下生成一个dll文件和lib文件，按正常类调用就可以了。