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Application Name

Posted on 2008-10-14
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Last Modified: 2012-05-05
Application Name
How can I get the name of an application within a DLL.

Example:
Application Name = MyApplication.EXE
Dll Name = MyDLL.DLL

MyDLL.DLL is accessed by MyApplication.EXE
If you do MsgBox App.EXEName within MyDLL.DLL it returns MyDLL .  How can I get the name of the application?  In this case MyApplication

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Question by:PhilChapmanJr
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Expert Comment

by:appari
ID: 22711140
you have to use getcallingassembly method from reflection
try, example from MSDN
http://msdn.microsoft.com/en-us/library/system.reflection.assembly.getcallingassembly.aspx

Dim SampleAssembly As [Assembly]
    ' Instantiate a target object.
    Dim Integer1 As New Int32()
    Dim Type1 As Type
    ' Set the Type instance to the target class type.
    Type1 = Integer1.GetType()
    ' Instantiate an Assembly class to the assembly housing the Integer type.  
    SampleAssembly = [Assembly].GetAssembly(Integer1.GetType())
    ' Display the name of the assembly that is calling the method.
    Console.WriteLine(("GetCallingAssembly=" + [Assembly].GetCallingAssembly().FullName))
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Expert Comment

by:appari
ID: 22711147

I am sorry ignore my comment, that is for VB.Net
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Expert Comment

by:Curt Lindstrom
ID: 22711262
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Author Comment

by:PhilChapmanJr
ID: 22711910
Epaclm,
This code appears to return the language identifier  and not the EXE parent name.
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LVL 18

Expert Comment

by:Curt Lindstrom
ID: 22715995
Sorry, the best I could find. Maybe it can be updated to find more info. Try and see what you get with this file.

Curt
Find-DLL-details.xls
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Accepted Solution

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nffvrxqgrcfqvvc earned 500 total points
ID: 22716893
Depending on exactly what operating system your targeting.  GetProcessImageFileName or QueryFullProcessImageName function. This is more efficient and more reliable than calling the GetModuleFileNameEx function with a NULL module handle.

QueryFullProcessImageName - is for vista only.
GetProcessImageFileName - is for Windows Vista or Windows XP.
GetModuleFileNameEx - Windows Vista, Windows XP, or Windows 2000 Professional.

Just a side note to be safe its probrably best to use OpenProcess and specify the access masks for the process. The handle must have the PROCESS_QUERY_INFORMATION and PROCESS_VM_READ access rights. However for my example I will just use GetCurrentProcess to point you into the right direction.


Private Declare Function GetModuleFileNameExW Lib "Psapi" (ByVal hProcess As Long, ByVal hModule As Long, ByVal lpFilename As Long, ByVal nSize As Long) As Long

Private Declare Function GetCurrentProcess Lib "kernel32" () As Long
 

Public Function ModuleFileName() As String

    

    Dim Buffer(1024)        As Byte

    Dim dwLength            As Long

    

    dwLength = GetModuleFileNameExW(GetCurrentProcess, 0, VarPtr(Buffer(0)), UBound(Buffer))

    ModuleFileName = Left$(Buffer, dwLength)

    Erase Buffer

    

End Function

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Expert Comment

by:nffvrxqgrcfqvvc
ID: 22717185
' Here is the so called correct way to do this thanks for the points.

Option Explicit
 

Private Declare Function GetModuleFileNameExW Lib "Psapi" (ByVal hProcess As Long, ByVal hModule As Long, ByVal lpFilename As Long, ByVal nSize As Long) As Long

Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long

Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long

Private Declare Function GetCurrentProcessId Lib "kernel32" () As Long
 

Private Const PROCESS_QUERY_INFORMATION     As Long = &H400

Private Const PROCESS_VM_READ               As Long = &H10
 

Public Function ModuleFilename() As String

    

    Dim Buffer(1024)    As Byte

    Dim hProcess        As Long

    Dim dwLength        As Long

    Dim dwPid           As Long

    

    ' * get this applications process id

    dwPid = GetCurrentProcessId

    ' * get the real process handle with correct access masks.

    hProcess = OpenProcess(PROCESS_QUERY_INFORMATION Or PROCESS_VM_READ, 0, dwPid)

    ' * get the name of the application

    dwLength = GetModuleFileNameExW(hProcess, 0, VarPtr(Buffer(0)), UBound(Buffer))

    ' * ToString

    ModuleFilename = Left$(Buffer, dwLength)

    ' * cleanup the process handle

    CloseHandle hProcess

    ' * cleanup the buffer

    Erase Buffer

    

End Function

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Author Comment

by:PhilChapmanJr
ID: 22720449
Thanks
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