Access 2007/VBA-表单的多个实例，模块上特定实例的更新控件 [英] Access 2007 / VBA - Multiple Instances of Form, Update controls on specific instance from Module

问题描述

我正在使用Allen Browne的方法来创建和管理表单的多个实例.我被困在如何从VBA模块引用表单的特定实例上的控件或属性.这是我打开新实例的方法:

I am using Allen Browne's method for creating and managing multiple instances of a form. I am stuck on how to reference controls or properties on a specific instance of the form from a VBA Module. Here is how I open a new instance:

'Purpose:    Open an independent instance of form frmMasterRecord.
Dim frm As Form

'Housekeeping
myFilter = Trim("" & myFilter)

'Open a new instance, show it, and set a caption.
Set frm = New Form_frmMasterRecord
frm.ServerFilter = myFilter
frm.ServerFilterByForm = True
frm.Requery
frm.Visible = True

'Append it to our collection.
clnMasterRecord.Add Item:=frm, Key:=CStr(frm.hwnd)

Set frm = Nothing

假设我有三个打开的​​frmMasterRecord实例.如何在模块中调用子/函数，使其仅在表单的调用实例上操纵控件?

Assume I have three instances of the frmMasterRecord open. How do I call a sub/function in a Module and have it manipulate controls only on the calling instance of the form?

推荐答案

将引用传递给调用表单:

Pass a reference to the calling form:

Result = MyExternalFunction(Me)

和

Public Function MyExternalFunction(ByRef frm As Form) As Boolean

    ' Do stuff with object frm.

    MyExternalFunction = Result

End Function

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