[RESOLVED] How to detect installed components

[msayed2004]

Hi everybody ;

I was wondering if there is a method to detect if a DLL or OCX is already exist & registered , also in VB6 how can I detect that the .Net framework is installed & what version (I hope that this is not the wrong forum to ask about that).

[Cristian]

Only win32 Api

try this:
http://msdn.microsoft.com/library/de...tclassinfo.asp

[msayed2004]

Only win32 Api

try this:
http://msdn.microsoft.com/library/de...tclassinfo.asp

Thank you , but I guess that it is irrelevant , if I am wrong can anybody explain that foe me. ???

[RobDog888]

For your first question:

Private Declare Function LoadLibrary Lib "kernel32.dll" Alias "LoadLibraryA" (ByVal lpLibFileName As String) As Long

[msayed2004]

Do you mean this :

Option Explicit
Private Declare Function FreeLibrary Lib "kernel32" (ByVal hLibModule As Long) As Long
Private Declare Function LoadLibrary Lib "kernel32" Alias "LoadLibraryA" (ByVal lpLibFileName As String) As Long
 
Private Sub cmdCheck_Click()
MsgBox "Exist ???    =" & CheckForComponent("user32.dll")
End Sub
 
Private Function CheckForComponent(ComPath As String) As Boolean
Dim Ret As Long
Ret = LoadLibrary(ComPath)
FreeLibrary Ret
 
If Ret = 0 Then
        CheckForComponent = False
    Else
        CheckForComponent = True
End If
 
End Function

[msayed2004]

Sorry : BUMP

1-Is that what you mean by the API (LoadLibrary).
2-If I want to get their versions I need to get their paths , is it possible (via registry for example).
3-About the .Net framework , should I ask in the .Net section (Note that I want to do this in VB6)

Thanks

[msayed2004]

OK , I made a topic about detecting the framework : http://www.vbforums.com/showthread.php?t=435124 , it is resolved for that issue , but I still want to know about other questions plz , help

[msayed2004]

OK , now my second question is also resolved , coz using APIs to get a file version need full path only for un-registered components.

So the last question Is that what you mean by the API (LoadLibrary) , RobDog888 ?, see post No.5

Please this is the remaining part of my current project

[msayed2004]

BUMP
Nudge
Hello

Anybody can answe plz

[RobDog888]

Yes, but user32 will exist in all windows based OS' as its a core requirement for windows to run.

The return of LoadLibrary will be non-null if it suceeds and the library exists.

See this definition and two code examples at the bottom of the page for more details and examples of its use.

http://www.allapi.net/apilist/LoadLibrary.shtml

[msayed2004]

I know that and i have (API Guide) , I just used the (user32.dll) as example.

This means that this topic is RESOLVED & RobDog888 deserves a rate