How to center a common dialog

Posted On 2017-06-09 by BlackBeltVB
Tags: VB6 Miscellaneous 
Views: 184

Title Uploaded Size
CENTRDLG.ZIP 6/9/2017 6:28:08 AM 3,467

Responds to the WM_INITDIALOG message to center the Common Dialog Control on a form. This sample uses a derivative of the technique created for the Windows Styles article in Visual Basic Programmer's Journal.

Uses the following API functions:

  • CallNextHookEx
  • CallWindowProc
  • CopyMemory (RtlMoveMemory)
  • GetWindowRect
  • SetWindowsHookEx
  • SetWindowLong
  • SetWindowPos
  • UnHookWindowsHookEx

Centrdlg Sample


This code originally appeared on, and has been republished here with the permission of Matt Hart.

About the Author

has posted a total of 89 articles.

Comments On This Post

No comments on this post yet!

Do you have a thought relating to this post? You can post your comment here. If you have an unrelated question, you can use the Q&A section to ask it.

Or you can drop a note to the administrators if you're not sure where you should post.

Your IP address is:

Before you can post, you need to prove you are human. If you log in, this test goes away.

Code Links