Howto use API functions without declaring it?

[Prashant]

Hi,
How to use WIN32 API functions without declaring it? Is it possible by useing LoadLibrary()/GetProcAddress() API function or by CreateObject() function? if not then what shall i use for it?

[crispin]

not possible, if you want to make an API call to a function / void inside a DLL you must declare it...

[Vlatko]

What is worng with declaring apis (except that it is very borring and annoying ). The loadlibrary api isn't exactly meant for usage in VB.

[jim mcnamara]

You can do this in a limited way. This is from allapi.net -

Create a new project and add this code to Form1
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 Declare Function GetProcAddress Lib "kernel32" (ByVal hModule As Long, ByVal lpProcName As String) As Long
Private Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hWnd As Long, ByVal Msg As Any, ByVal wParam As Any, ByVal lParam As Any) As Long
Private Sub Form_Load()
    On Error Resume Next
    'KPD-Team 1999
    'URL: http://www.allapi.net/
    'E-Mail: [email protected]
    'We're going to call an API-function, without declaring it!
    Dim lb As Long, pa As Long
    'map 'user32' into the address space of the calling process.
    lb = LoadLibrary("user32")
    'retrieve the address of 'SetWindowTextA'
    pa = GetProcAddress(lb, "SetWindowTextA")
    'Call the SetWindowTextA-function
    CallWindowProc pa, Me.hWnd, "Hello !", ByVal 0&, ByVal 0&
    'unmap the library's address
    FreeLibrary lb
End Sub

But - Cripsin & Vlatko are right - why go to all this bother?

[Megatron]

As a work around, you could declare your most commonly used API's in a module, and whenever you want to use them, just include the module.

[CraigH]

I am trying to the same thing and have tried that code example from allapi.net
Once it gets to the callwindowproc the program shuts down. Anyone know why or having the same problem?
Thanks
Craig