How to associate an MFC control with its corresponding object

 

 

 

 

The control of the dialog box is associated with the object of the corresponding class :(Two methods)

(1) associate data using the cwnd: dodataexchange function;

Use the Add variable on the member variables page in the MFC classwizard of VC ++ 6.0 to associate a variable.

ThenDodataexchangeThe function containsDdx_xxxxxFunction association. This method is very common. For example, a cedit control can be associated with either a cedit object or a variable of the Int or cstring type;

(2) associate with a function (associate with the object of the corresponding class)

The main applications are as follows:

Cwnd * getdlgitem (int Nid ) Const;

NidIs the resource ID. Of course, the control must be a control derived from cwnd;

1. For example, a progress bar Control

Cprogressctrl * g_ptrprogress1 = NULL;

G_ptrprogress1 =(Cprogressctrl *)Getdlgitem (idc_progress1 );

// Pay attention to forced conversion.Cwnd *Forced conversionCprogressctrl *

2. For example, an editing box

Cedit * pboxone;

Pboxone = (cedit *) getdlgitem (idc_edit1 );