CComboBoxEx with History!
Posted by Nabil Hussein on February 7th, 2002
AbstractThe CHistoryComboEx based on the class ( CHistoryCombo) by Paul S. Vickery, which enables you to read and save the items of a ComboBox from and to the Registry. You can use it also to display the contents of a CRecentFileList object. CHistoryComboEx has the same functions of CHistoryCombo, but instead of the function (AddString()), I have added two new implements to the function (InsertItem()).
How to use it?
- Copy (HistoryComboEx.cpp and HistoryComboEx.h) to the folder of your project.
- Click on Project\Add To Project\Files... and then select the two files of our class and insert them into your project.
- Add programmatically or using the "Resource Editor" an Extended ComboBox control to your dialog.
- Using the "Class Wizard", add a member variable of type CComboBoxEx to your Extended ComboBox control. (I'll assume that your variable name is "m_cbeCtrl")
- Now open the header file of your dialog-box. Firstly, add this line to the top of it:
#include "HistoryComboEx.h"
and then change this line:
CComboBoxEx m_cbeCtrl;
CHistoryComboEx m_cbeCtrl;
- Add the following line to the end of your "OnInitDialog()" or "OnInitialUpdate()" function:
m_cbeCtrl.LoadHistory("Addresses", "HistoryComboEx");
This line will add key names "Addresses" to the default key of your application in the Registry. Note: You can change "Addresses" and "HistoryComboEx" to any other values.
- Add the following line to the handler, which will be running, when your application is going to be closed. (OnOK() for example!):
m_cbeCtrl.SaveHistory();
That's all!
Functions
Here I will write a summary for the functions of CHistoryComboEx. For details please see "HistoryComboEx.cpp". Note: The documentation is the same of that one by Paul S. Vickery's "CHistoryCombo". InsertItem(const COMBOBOXEXITEM *pCBItem) int InsertItem(CString strItem) void SetMaxHistoryItems(int nMaxItems); void ClearHistory(BOOL bDeleteRegistryEntries = TRUE);
Example
The Demo shows you how to use "CHistoryComboEx" to save and load URLs.
If you have any questions or comments, please let me know!
could not work on Win NT 4.0Posted by Legacy on 10/09/2002 12:00am
Originally posted by: Abdul
Nice work. I have tried with Win NT 4.0 but couldnt succsed.Reply
Any suggestion ?
best regards
Abdul
Fantastic Job!Posted by Legacy on 02/18/2002 12:00am
Originally posted by: Trent
Works like a charm,
Thanks!
Reply
Nice appPosted by Legacy on 02/09/2002 12:00am
Originally posted by: alan
It works really good in you demo app but when I put it in mine it doesn't work.
Also, I've searched the registry with Regcrawler for the values it stores and can't find them anywhere. Where exactly does it store them I don't understand why can't i find them?Reply