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Tip of the Day
Language: Visual Basic
Expertise: Intermediate
Aug 21, 1997



Building the Right Environment to Support AI, Machine Learning and Deep Learning

Hiding MDI Children

MDI children can be hidden! Although VB doesn't directly support this, you can use the ShowWindow API call to do so. A simple call like this will do it:
 Declare Function ShowWindow Lib "User" _ 
(ByVal hWnd As Integer, ByVal nCmdShow _ 
As Integer) As Integer 
Global Const SW_HIDE = 0 
Ret% = ShowWindow(frmMDIChild.hWnd, SW_HIDE) ,
Other issues need to be addressed if you use this technique, such as what happens if the active child has a menu when it's hidden or if the hidden child was maximized. These and other pitfalls are covered in a demonstration of MDI techniques, MDIDMO.ZIP, which can be downloaded from either the MSBASIC or VBPJ Forums on CompuServe.
Karl E.
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