Advanced Multiply Function

Category:

System/API

Type:

Snippets

Difficulty:

Intermediate

Author:

Timothy L Slater Jr.

Version Compatibility: Visual Basic 6, Visual Basic 5

More information:

This routine will allow you to multiply any two numbers together, regardless of size, without an overlow. If the result is too large, only the lower 32 bits of the result are returned. It uses a precompiled assembly.

Instructions: Copy the declarations and code below and paste directly into your VB project.

Declarations:
Private Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hWnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long

Code: