visual-studio 如何显示 Win32 MessageBox？
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How do I show a Win32 MessageBox?
提问by user133466
I'm trying to make a pop up message box with "Hello World" written on it. I started off with File>New Project>Visual C++>CLR>Windows Form Application Then I dragged a button from the toolbox onto the form, double clicked it entered
我正在尝试制作一个弹出消息框，上面写着“Hello World”。我从文件>新建项目>Visual C++>CLR>Windows 窗体应用程序开始，然后我从工具箱中拖出一个按钮到窗体上，双击它进入
private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e)
{
MessageBox("Hello World");
}
then I compiled... but I got an error message saying
然后我编译...但我收到一条错误消息说
error C2440: '' : cannot convert from 'const char [12]' to 'System::Windows::Forms::MessageBox'
错误 C2440：“”：无法从“const char [12]”转换为“System::Windows::Forms::MessageBox”
回答by RichieHindle
You need:
你需要：
MessageBox::Show("Hello World");
(Tested according to your instructions in Visual Studio 2005.)
（根据您在 Visual Studio 2005 中的说明进行测试。）
回答by Kim Gr?sman
I'm not sure what your ultimate goals are, but the subject line mentioned a "Windows Application in C" -- you've created a C++/CLI application, which isn't really the same thing.
我不确定您的最终目标是什么，但主题行提到了“C 中的 Windows 应用程序”——您已经创建了一个 C++/CLI 应用程序，这实际上并不是一回事。
C++/CLI is Microsoft's attempt to create a C++ dialect closer to the .NET runtime.
C++/CLI 是 Microsoft 尝试创建更接近 .NET 运行时的 C++ 方言。
If you want to build a C program, start with a Visual C++ -> Win 32 Project.
如果要构建 C 程序，请从 Visual C++ -> Win 32 项目开始。
In the generated code, in the _tWinMain function, add a call to the native MessageBox function:
在生成的代码中，在_tWinMain函数中，添加对原生MessageBox函数的调用：
int APIENTRY _tWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow)
{
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);
MessageBox(NULL, _T("Hello world!"), _T("My program"), MB_OK);
// ...
}
That should get you started.
这应该让你开始。
