判断主程序是Windows应用程序还是控制台应用程序

待我称王封你为后i 2022-07-15 12:08 244阅读 0赞

标签： [ windows][windows][application][][winform][][class][][function][][object][]

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来源:水如烟 - CSDNBlog  
　　我们知道，桌面应用程序一般有两种类型，一是Windows应用程序，二是控制台应用程序。  
　　如何判断调用自己所在Dll的主程序是Windows还是控制台应用程序呢？  
  
　　解决这个问题，基点是ApplicationBase，ConsoleApplicationBase和WindowsFormsApplicationBase，  
攻击的地方，当然是Application了。  
  
我也曾想到能否从Thread.CurrentContext，Thread.CurrentThread，AppDomain.CurrentDomain来切入，不过没有去看。现在想“当然”的Application，有点武断，况且，Application源于System.Windows.Forms空间，用它来判断ConsoleApplicationBase，总觉得有些刺。  
  
据自己的测试，主程序的有三种体现方式，如下：  
  
Public Enum ApplicationType  
　WindowsForms '这是Form启动的Windows应用程序  
　ConsoleForms '这是Main启动且含代码Application.Run(New Form)的控制台应用程序  
　Console '这是Main启动无窗体的控制台应用程序,就算是Form.ShowDialog也列于此项  
End Enum  
MyApplicationBase.vb  
  
Imports Microsoft.VisualBasic.ApplicationServices  
  
Namespace LzmTW.uSystem.uForms  
  
　Public Class MyApplicationBase  
  
　'System.Windows.Forms.Application+ThreadContext  
　Private Shared gThreadContextType As uReflection.TypeHelper  
  
　'Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase+WinFormsAppContext  
　Private Shared gWinFormsAppContextType As uReflection.TypeHelper  
　Private gAppContext As Object = Nothing 'ApplicationContext or WinFormsAppContext  
　Private gWindowsFormsApplicationBase As WindowsFormsApplicationBase = Nothing  
　Private gCurrentType As ApplicationType  
  
　Shared Sub New()  
　gThreadContextType = New uReflection.TypeHelper(GetType(Application), "ThreadContext", True)  
　gWinFormsAppContextType = New uReflection.TypeHelper(GetType(WindowsFormsApplicationBase), "WinFormsAppContext", True)  
　End Sub  
　Sub New()  
　GetApplicationContext()  
  
　GetWindowsFormsApplicationBase()  
  
　gCurrentType = GetApplcationType()  
　End Sub  
  
　Private Sub GetApplicationContext()  
　Dim mCurrentThreadContext As Object  
　mCurrentThreadContext = gThreadContextType.MethodInvoke("FromCurrent")  
　gThreadContextType.SetCurrentObj(mCurrentThreadContext)  
　gAppContext = gThreadContextType.GetMemberValue("ApplicationContext")  
　End Sub  
　Private Sub GetWindowsFormsApplicationBase()  
　If Not gWinFormsAppContextType.CurrentType.IsInstanceOfType(gAppContext) Then Return  
　gWinFormsAppContextType.SetCurrentObj(gAppContext)  
　gWindowsFormsApplicationBase = CType(gWinFormsAppContextType.GetMemberValue("m\_App"), WindowsFormsApplicationBase)  
　End Sub  
  
　Private Function GetApplcationType() As ApplicationType  
　If gAppContext Is Nothing Then  
　Return ApplicationType.Console  
　End If  
　If gWindowsFormsApplicationBase Is Nothing Then  
　 Return ApplicationType.ConsoleForms  
　End If  
  
　Return ApplicationType.WindowsForms  
　 End Function  
  
　Public ReadOnly Property ApplicationContext() As ApplicationContext  
　Get  
　Return CType(gAppContext, ApplicationContext)  
　End Get  
　End Property  
  
　Public ReadOnly Property WindowsFormsApplicationBase() As WindowsFormsApplicationBase  
　Get  
　Return gWindowsFormsApplicationBase  
　End Get  
　 End Property  
　Public ReadOnly Property CurrentType() As ApplicationType  
　Get  
　Return gCurrentType  
　End Get  
　End Property  
　Public Enum ApplicationType  
WindowsForms  
ConsoleForms  
Console  
End Enum  
  
End Class  
End Namespace  
控制台的一个测试：  
  
Public Class Program  
Shared Sub Main()  
Console.WriteLine((New LzmTW.uSystem.uForms.MyApplicationBase).CurrentType.ToString)  
Application.Run(New Form1)  
Console.WriteLine((New LzmTW.uSystem.uForms.MyApplicationBase).CurrentType.ToString)  
Console.Read()  
End Sub  
End Class  
而Form1中有一个按钮也来测试  
  
Private Sub ButtonTest\_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonTest.Click  
Console.WriteLine((New LzmTW.uSystem.uForms.MyApplicationBase).CurrentType.ToString)  
End Sub  
那么,显示的结果,先是Console,后是ConsoleForms,最后是Console。  
  
MyApplicationBase有没有用?  
  
这当然看自己的需求。  
举例来说，如果有一个类需要输出信息，如是控制台应用程序，就输出到控制台，如是WinForm程序，就以Form的形式显示，  
这个时候，就需要MyApplicationBase来判定的了。  
  
另，如果是WinForm应用程序，MyApplicationBase.WindowsFormsApplicationBase其实就是My.Application，  
这里有大量的信息供自己使用。  
  
个人感觉，这个类可能还是蛮有用的。

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[object]: http://www.csdn.net/tag/object
[Link 1]: http://blog.csdn.net/tongdoudpj/article/details/1893284#comments
[Link 2]: http://blog.csdn.net/tongdoudpj/article/details/1893284#report
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[NVelocity]: http://blog.csdn.net/tongdoudpj/article/details/1893278
[IIS]: http://blog.csdn.net/tongdoudpj/article/details/1897020