Solved

CreateFileMapping parameter

Posted on 1999-01-05
1
349 Views
Last Modified: 2012-06-21
I follow the sample code from MSDN as shown below.

h = CreateFileMapping(-1,pNull,PAGE_READWRITE,0, 65535,"MyShare")

The problem I am having is that I can't find where the constant pNull and PAGE_READWRITE are defined. I tried to replace pNull with vbNull, Null, 0, and 0& and I get type mismatch error. How can I create a handle by using CreateFileMapping.  Please help
0
Comment
Question by:yray
1 Comment
 
LVL 4

Accepted Solution

by:
chabaud earned 50 total points
ID: 1454069
Change the declare statement as follow:

Private Declare Function CreateFileMapping Lib "kernel32" Alias "CreateFileMappingA" (ByVal hFile As Long, ByVal lpFileMappigAttributes As long, ByVal flProtect As Long, ByVal dwMaximumSizeHigh As Long, ByVal dwMaximumSizeLow As Long, ByVal lpName As String) As Long
private const PAGE_READONLY=2
private const PAGE_READWRITE=4
private const PAGE_WRITECOPY=8

and then:

h = CreateFileMapping(&hFFFFFFFF,0,PAGE_READWRITE,0, 65535,"MyShare")

0

Featured Post

Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction I needed to skip over some file processing within a For...Next loop in some old production code and wished that VB (classic) had a statement that would drop down to the end of the current iteration, bypassing the statements that were c…
Introduction In a recent article (http://www.experts-exchange.com/A_7811-A-Better-Concatenate-Function.html) for the Excel community, I showed an improved version of the Excel Concatenate() function.  While writing that article I realized that no o…
As developers, we are not limited to the functions provided by the VBA language. In addition, we can call the functions that are part of the Windows operating system. These functions are part of the Windows API (Application Programming Interface). U…
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question