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Child Dialog (Sub Forms)

, 17 Nov 1999
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A simple class for handling Child Dialogs within a dialog or property sheet.




A simple class for handling Child Dialogs within a dialog or property sheet. These Child Dialogs can be changed on the fly, much like subforms. It's a simple task really, but I got tired of programming everything every time Frown | :-(

Step 1. Design one or several 'Subdialogs'. Make sure to set the Style to Child and to tick the property 'Control'.

Step 2. Design a Parent Dialog. To make things easier, I add a static control for easier positioning of the child dialogs (normally I use a group frame).

Step 3. Generate for all dialogs, their classes.

Step 4. Add the files SubFormCollection.cpp and SubFormCollection.h to your project.

Step 5. Create an object of the class CSubFormCollection to the parent dialog.

   CSubFormCollection m_SubForms;

Step 6. In the OnInitDialog() method of the parent class, add the code below:

   CRect r;
   // get the position for the subforms
   // if the positioning is absolute use this, else the next line
   //    m_SubForms.SetRelPos(r);
   // centers the subdialog within the static IDC_SUBFORM_FRAME
   m_SubForms.CreateSubForm(IDD_SUBFORM1,this); // create the sub forms
   m_SubForms.ShowSubForm(); // show the first one

Step 7. To switch between the subdialogs, use the code below:


Now the big work starts...


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About the Author

Daniel Zuppinger
Chief Technology Officer
Switzerland Switzerland
Professional IT developer since 1983. First projects with Cobol, then Pascal, Modula2, C and since Visual C++ 1.0 also with C++. Works since 1986 as Consultant, between 1990 and 2008 for Infobrain in Switzerland, currently employed by enValue (also Switzerland).
Current field is the project management and development of software for Bank applications.
Married, two daughters, Hobbies : Paragliding, Orienteering, Mountainbiking, Photography

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