在没有 .NET 的系统上启动 .NET 应用程序时，带有 SEE_MASK_FLAG_NO_UI 的 ShellExecuteEx 显示错误

发布于 2024-08-18 19:40:30 字数 1234 浏览 7 评论 0原文

ShellExecuteEx Win32 函数调用在其 SHELLEXECUTEINFO 结构中有一个标志 SEE_MASK_FLAG_NO_UI，该标志应禁止在以下情况下因错误而可能显示的任何错误对话框：启动应用程序。

MSDN文档此处对此非常明确：

SEE_MASK_FLAG_NO_UI
  0x00000400. Do not display an error message box if an error occurs.

就我而言，我在未安装 .NET 的 Windows XP 系统上启动 .NET 可执行文件。我系统地收到以下消息，由 Windows 在对话窗口中显示：

Xxx.exe - Application Error
The application failed to initialize properly (0xc0000135).
Click on OK to terminate the application.
[ OK ]

我不希望用户必须处理此消息。我宁愿从 ShellExecuteEx 返回错误代码，并能够在我的程序中优雅地处理它。以下是我用来启动外部可执行文件的代码片段：

#include <windows.h>

int wmain(int argc, wchar_t* argv[])
{
    SHELLEXECUTEINFO info;
    memset(&info, 0, sizeof(SHELLEXECUTEINFO));
    info.cbSize = sizeof(SHELLEXECUTEINFO);
    info.fMask = SEE_MASK_FLAG_NO_UI;
    info.lpVerb = L"open";
    info.lpFile = L"Xxx.exe";
    info.nShow  = SW_SHOW;
    return ShellExecuteEx (&info);
}

如果系统上不存在 .NET，是否有一种官方方法可以抑制错误消息？或者我是否必须在执行应用程序之前自己检查此特定条件（但我事先不知道它是 .NET 应用程序还是本机应用程序）。例如，如果我启动的应用程序缺少一些 DLL 怎么办？

原文

The ShellExecuteEx Win32 function call has a flag SEE_MASK_FLAG_NO_UI in its SHELLEXECUTEINFO structure, which should suppress any error dialogs which could be displayed because of an error when launching an application.

The MSDN documentation here is quite explicit about it:

SEE_MASK_FLAG_NO_UI
  0x00000400. Do not display an error message box if an error occurs.

In my case, I am launching a .NET executable on a Windows XP system where no .NET is installed. I systematically receive the following message, displayed by Windows in a dialog window:

Xxx.exe - Application Error
The application failed to initialize properly (0xc0000135).
Click on OK to terminate the application.
[ OK ]

I don't want the user to have to deal with this message. I'd rather get back an error code from ShellExecuteEx and be able to handle it gracefully in my program. Here is the code snippet which I am using to start the external executable:

#include <windows.h>

int wmain(int argc, wchar_t* argv[])
{
    SHELLEXECUTEINFO info;
    memset(&info, 0, sizeof(SHELLEXECUTEINFO));
    info.cbSize = sizeof(SHELLEXECUTEINFO);
    info.fMask = SEE_MASK_FLAG_NO_UI;
    info.lpVerb = L"open";
    info.lpFile = L"Xxx.exe";
    info.nShow  = SW_SHOW;
    return ShellExecuteEx (&info);
}

Is there an official way of suppressing the error message if .NET is not present on the system? Or do I have to check for this specific condition myself before executing the application (but I do not know in advance if it is a .NET app or a native app). And what if the app I am starting is missing some DLLs, for instance?

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