Qt项目中的多个UI

Question

如何在Qt Creator中创建多个UI表单并将它们链接起来？ 我想在我的mainwindow.ui中有一个按钮，当它被触发时，我想要显示其他的UI。 我该怎么办？

我有两个Qt的表单类：

1. 主窗口
2. mainwindow2

我在main.cpp中尝试这种代码：

#include "mainwindow.h" 
#include "mainwindow2.h" 
#include <QApplication> 

int main(int argc, char *argv[]) 
{ 
QApplication a(argc, argv); 
MainWindow w; 
w.show(); 
MainWindow2 w2; 
w2.show(); 

return a.exec(); 
} 

，但出现这样的错误：

main.obj:-1: error: LNK2019: unresolved external symbol "public: virtual __thiscall MainWindow2::~MainWindow2(void)" (??1MainWindow2@@UAE@XZ) referenced in function _main

main.obj:-1: error: LNK2019: unresolved external symbol "public: __thiscall MainWindow2::MainWindow2(class QWidget *)" (??0MainWindow2@@QAE@PAVQWidget@@@Z) referenced in function _main

release\testtest.exe:-1: error: LNK1120: 2 unresolved externals

Answer 1

看看slots并与其他UI.show（）/ otherUI.hide（）一起玩，如果你想要基本的交互。

对于类似器问题：从msdn和here

When you created the project, you made the wrong choice of application type. When asked whether your project was a console application or a windows application or a DLL or a static library, you made the wrong chose windows application (wrong choice).

Go back, start over again, go to File -> New -> Project -> Win32 Console Application -> name your app -> click next -> click application settings.

For the application type, make sure Console Application is selected (this step is the vital step).

The main for a windows application is called WinMain, for a DLL is called DllMain, for a .NET application is called Main(cli::array ^), and a static library doesn't have a main. Only in a console app is main called main