网上有大神教我们怎么用C#调用Qt写的dll,试了一下,没调出来,可能是Qt版本的问题;
今天调了个程序出来,话不多说,写步骤,上代码:
1,从网上下一个qtwinmigrate:
https://github.com/qtproject/qt-solutions/tree/master/qtwinmigrate
发现qtwinmigrate文件夹里面有例程;
2,Qt中编译一下,然后在C#中调用,OK;
3,然后自己写一个程序,编译成dll,用C#调用,OK;
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代码如下:
Qt dll:
qtui.pro:
TEMPLATE = lib
CONFIG += dll
SOURCES = main.cpp \
dialog.cpp
TARGET = qtui
DLLDESTDIR = $$[QT_INSTALL_PREFIX]/bin
include(../../src/qtwinmigrate.pri)
FORMS += \
dialog.ui
HEADERS += \
dialog.h
注意,要把qtwinmigrate文件夹中的src添加到项目中;
头文件:dialog.h
#ifndef DIALOG_H
#define DIALOG_H
#include
namespace Ui {
class Dialog;
}
class Dialog : public QDialog
{
Q_OBJECT
public:
explicit Dialog(QWidget *parent = 0);
~Dialog();
private slots:
void on_m_pbCalc_clicked();
private:
Ui::Dialog *ui;
};
#endif // DIALOG_H
cpp:
#include "dialog.h"
#include "ui_dialog.h"
Dialog::Dialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog)
{
ui->setupUi(this);
}
Dialog::~Dialog()
{
delete ui;
}
void Dialog::on_m_pbCalc_clicked()
{
int add1 = ui->m_lE1->text().toInt();
int add2 = ui->m_lE2->text().toInt();
int sum = add1+add2;
QString strSum;
strSum.setNum(sum);
ui->m_lbSum->setText(strSum);
ui->m_lEsum->setText(strSum);
}
main.cpp
#include
#include
#include
#include
#include "dialog.h"
extern "C" __declspec(dllexport) int showDialog()
{
int argc = 0;
//char* argv[] = NULL;
QApplication a(argc, NULL);
Dialog *dlg = new Dialog();
dlg->show();
return a.exec();
}
//int main()
//{
// Dialog *dlg = new Dialog();
// dlg->show();
// return 0;
//}
界面没有啥,就是三个文本框: 实现一个加法;
C#这边简单粗暴:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Windows;
namespace CSCallQtdll
{
public partial class Form1 : Form
{
[DllImport("qtui.dll")]
public static extern int showDialog();
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
showDialog();
}
}
}
界面就一个按钮,把qtui.dll添加进项目就可以了;