CListCtrl.GetItemData()

[Cagan]

For a report-style CListCtrl, I use SetItemData() method to store some values, when I use GetItemData() I get 0 (zero) especially for the first item in the control whereas the real value has nothing to do with it.

Any ideas?

Thanks

[riechard]

I haven't discovered a problem like this using the report-style CListCtrl. I think you should

check the indexes for a 0/1 base problem.

[Philip Nickoll]

I also seem to be suffering from a similiar problem - the SetItem function always returns 0 (i.e. a failure). I am using a CListView derived class and call set data like this


GetListCtrl ().SetItem(&lv);


where lv is a LV_ITEM structure.


This function call (SetItem) however works fine if I use a CListCtrl derived class.


Any ideas of why this is happening or better yet how to solve this problem would be greatly appreciated.


Thanks in advance


Philip Nickoll

[Torkel]

You might only need to use SetItemState(). It works better.


Torkel

[Denis Dagenais]

Try using the following:



Single column:


    unsigned short ChannelList[128]; // max channels

    unsigned short ubNumChannels;


    UCHAR szChan[4];


    m_ChannelListCTL.DeleteAllItems();

    ubNumChannels=theCollector->getChannelList(ChannelList);

&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(int&nbsp;i=0;i<&nbsp;ubNumChannels;i++)

&nbsp;&nbsp;&nbsp;&nbsp;{

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;itoa(ChannelList[i]&nbsp;,(char*)szChan,10);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;m_MyClistCtrl.InsertItem(i,(char*)szChan);


&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;//for&nbsp;(int&nbsp;i=0;i<&nbsp;ubNumChannels;i++)



Multi-column:


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;LV_ITEM&nbsp;lviValues;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;int&nbsp;iCount;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;char&nbsp;sPower[15],&nbsp;sVoltage[15];


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;iCount&nbsp;=&nbsp;m_AcquiredValuesListCTL.GetItemCount();

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sprintf(sPower,"%.3lf",&nbsp;m_InputPower&nbsp;);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sprintf(&nbsp;sVoltage,"%.4lf",m_AcquiredVoltage);


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;lviValues.mask=LVIF_TEXT;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;lviValues.iSubItem=0;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;lviValues.pszText=&nbsp;sPower;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;lviValues.cchTextMax&nbsp;=&nbsp;15;

m_AcquiredValuesListCTL.InsertItem(&lviValues);

m_AcquiredValuesListCTL.SetItemText(iCount,1,sVoltage);


and&nbsp;now&nbsp;to&nbsp;retrieve:


Single&nbsp;column:

&nbsp;&nbsp;&nbsp;&nbsp;iCountValues&nbsp;=&nbsp;m_AcquiredValuesListCTL.GetItemCount();

&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(int&nbsp;i=0;i<&nbsp;iCountValues;i++)

&nbsp;&nbsp;&nbsp;&nbsp;//&nbsp;load&nbsp;the&nbsp;arrays&nbsp;from&nbsp;the&nbsp;Values&nbsp;list

&nbsp;&nbsp;&nbsp;&nbsp;{

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;m_AcquiredValuesListCTL.GetItemText(i,0,sPower,sizeof(sPower));

&nbsp;&nbsp;&nbsp;&nbsp;}//for&nbsp;(int&nbsp;i=0;i<&nbsp;iCountValues;i++)


multi-column:

&nbsp;&nbsp;&nbsp;&nbsp;iCountValues&nbsp;=&nbsp;m_AcquiredValuesListCTL.GetItemCount();

&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(int&nbsp;i=0;i<&nbsp;iCountValues;i++)

&nbsp;&nbsp;&nbsp;&nbsp;//&nbsp;load&nbsp;the&nbsp;arrays&nbsp;from&nbsp;the&nbsp;Values&nbsp;list

&nbsp;&nbsp;&nbsp;&nbsp;{

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;m_AcquiredValuesListCTL.GetItemText(i,0,sPower,sizeof(sPower));

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;m_AcquiredValuesListCTL.GetItemText(i,1,sVoltage,sizeof(sVoltage));

&nbsp;&nbsp;&nbsp;&nbsp;}//for&nbsp;(int&nbsp;i=0;i<&nbsp;iCountValues;i++)



&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;