Very Easy Newbie VB QN

Posted on 2003-03-24
Medium Priority
Last Modified: 2010-05-01
How do you create a control at runtime?  Say I want to create an array of combo boxes at runtime,  

Set DataComboMatrix(i, j) = ???
Question by:chaplt01
LVL 44

Accepted Solution

bruintje earned 140 total points
ID: 8193810
Hello chaplt01,

you could take a look at this

LVL 77

Expert Comment

ID: 8193951
You can only create an array at design time. You can do this by setting the index of a control to a number. So that you then might have a control such as Combo1(0).
You can add other members at run time with the load statement:

Load Combo1(1)
Load Combo1(2)

You can't create an array with more than one dimension, as in your example, though.

Expert Comment

ID: 8199854
You can create any client object at run time easily using API calls.

Though this can be risky if you're not familiar with API calls, a good suggestion is to search for "API" and "DrawFrameControl"

Declare Function DrawFrameControl Lib "user32" Alias "DrawFrameControl" (ByVal hDC As Long, lpRect As RECT, ByVal un1 As Long, ByVal un2 As Long) As Long

A good place to look is AllAPI.net, they have a program (http://www.allapi.net/agnet/apiguide.shtml) there that'll let you scan and read up on these functions.  With the hDC of your window, you can ADD many types of controls to your window at runtime.  Just remember though, a good programming technique is to remove them before you're done (although a window will remove all clients inside of it at closure, it's always best to do your own housekeeping).

API calls aren't for the faint of heart, but having a program that keeps all the definations and what they mean (with examples), gives you a lot to go on.

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