Introduction
Often when the user can select some items from a predefined set and has to sort them at the same time, a dialog similar to the one above is used. For instance, for selecting a set of fields for a database access or for exporting to a file.
The CSubSelectionDlg
is derived from CDialog
and can be used as a base for your own class. The included download gives you a sample with all the possibilities (CMySelectionDlg
). You can create your own dialog template, but it needs (at least) two CListBox
es.
Here is a step by step guide for including the CSubSelectionDlg
into your project:
Steps
Step 1. Add the two files CSubSelectionDlg.h and CSubSelectionDlg.cpp into your project.
Step 2. Make a new dialog resource with the two CListBox
es. You can make one ore both boxes as 'single', 'multiple' or 'extended' selectable.
Step 3. The first CListBox
should be made 'sorted'.
Step 4. Now call the class wizard and make a CDialog
(CMySelectionDlg
in the sample) derived class attached to your new dialog template.
Step 5. Now change the base class of your new dialog from CDialog
to CSubSelectionDlg
. Also include the CSubSelectionDlg.h file where needed.
Step 6. Include the following line in your .h file:
enum { IDD2 = IDC_SELECTION_LIST1, IDD3 = IDC_SELECTION_LIST2 };
and replace the IDC_SELECTION_LIST1
/IDC_SELECTION_LIST2
with the name of your CListbox
resource ID.
Step 7. Change the dialog constructor to include these IDs:
CMySelection::CMySelection(CWnd* pParent )
: CSubSelectionDlg(CMySelection::IDD,
CMySelection::IDD2,CMySelection::IDD3, pParent)
{....
Step 8. Now map any buttons etc. to the base class members. Note: None of these mappings are needed, but you will not get the attached functionality :-(
ON_LBN_DBLCLK(IDC_SELECTION_LIST1, OnDblclkSelectionList1)
ON_LBN_DBLCLK(IDC_SELECTION_LIST2, OnDblclkSelectionList2)
ON_BN_CLICKED(IDC_MOVEDOWN, OnMovedown)
ON_BN_CLICKED(IDC_MOVEUP, OnMoveup)
ON_BN_CLICKED(IDC_EXCLUDE, OnExclude)
ON_BN_CLICKED(IDC_INCLUDE, OnInclude)
ON_BN_CLICKED(IDC_SELECTALL, OnSelectAll)
Step 9. Now you can overwrite the virtual functions InitListBox1()
and InitListBox2()
to give the boxes something to work with.
Now lean back to enjoy the newest addition to your project. For details, refer to the sample project. Of course, there is room for enhancements, like drag and drop, support for icons, or property sheets.
Professional IT developer since 1983. First projects with Cobol, then Pascal, Modula2, C and since Visual C++ 1.0 also with C++ and today C#. Works since 1986 as Consultant, between 1990 and 2008 for Infobrain in Switzerland, from 2008 until 2013 for enValue (also Switzerland) and currently working for Comfone (Bern, Switzerland).
Married, two grown-up daughters, Hobbies : Paragliding, Orienteering, Mountainbiking, Photography