Why integer???

I am trying to learn API. I started out buy using the findwindow fuction.
It did not work until I changed the return type to integer.

From:

VB Code:

Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" _
      (ByVal lpClassName As String, ByVal lpWindowName As String) As Long

To:

VB Code:

Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" _
      (ByVal lpClassName As String, ByVal lpWindowName As String) As Integer

Everywhere I look, its show the return type as Long. If I use long, my results are just random numbers.

Why?

VB.NET 2003

If you are using VB.NET then you should be using IntPtr rather than Integer.

FindWindow API returns the handle of the window and handles are stroed in IntPtr datatypes unlike VB 6.

Are you sure you have not looked at code for Classic VB rather then VB.NET? In classic VB (meaning version 6 and some of the earlier) integer was 16bit, while long was 32bit.

Today in VB.NET, an integer is finaly 32bit, hence an integer in VB.NET is the same as a long in VB 6.


PS: DOn't ask me why I know these things. I have never touched VB.NET..:D


- ØØ -

Thanks, thats what I needed.

My esteemed comrade Noteme is right, integers inany .NET language are 32-bit.

VB6 is at fault here really for perpetuating integers as being signed 16 bits rather than signed 32 bits.

You will find that there is very little API example code availabe for .NET languages. (C# does fare a little better than VB.net in this respect, but you should be using c# anyway :D but I'm biased). Roughly speaking if you are going to use Vb6 code to learn from then ... Vb6 long should be replaced with VB.net integer.

Or you can check out APIViewer 2004 in my sig, which has a .NET mode that has the changed declarations for you...

Quote:

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Originally Posted by wossname

My esteemed comrade Noteme is right, integers inany .NET language are 32-bit.

VB6 is at fault here really for perpetuating integers as being signed 16 bits rather than signed 32 bits.

You will find that there is very little API example code availabe for .NET languages. (C# does fare a little better than VB.net in this respect, but you should be using c# anyway :D but I'm biased). Roughly speaking if you are going to use Vb6 code to learn from then ... Vb6 long should be replaced with VB.net integer.

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How did you manage to use that much space to write exactly the same as I had already done?

I learned all about talking complete garbage from you m00sy.