Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

CreateFileMapping parameter

Posted on 1999-01-05
1
Medium Priority
?
379 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 4

Accepted Solution

by:
chabaud earned 100 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

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

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

When trying to find the cause of a problem in VBA or VB6 it's often valuable to know what procedures were executed prior to the error. You can use the Call Stack for that but it is often inadequate because it may show procedures you aren't intereste…
Background What I'm presenting in this article is the result of 2 conditions in my work area: We have a SQL Server production environment but no development or test environment; andWe have an MS Access front end using tables in SQL Server but we a…
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…
Suggested Courses

610 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