Sorting List View
-
I have a list view which needs to be sorted based on a click on header.I am using the ListCtrl.SortItems() function. But it is crashing when i clicked on the header.For better understanding i have listed the code. void CDirTreeDemoView::OnColumnClick(NMHDR* pNMHDR, LRESULT* pResult) { NM_LISTVIEW* pNMListView = (NM_LISTVIEW*) pNMHDR; this->GetListCtrl().SortItems (CompareFunc, pNMListView->iSubItem); *pResult = 0; } int CALLBACK CDirTreeDemoView::CompareFunc (LPARAM lParam1, LPARAM lParam2,LPARAM lParamSort) { ITEMINFO* pItem1 = (ITEMINFO*) lParam1; ITEMINFO* pItem2 = (ITEMINFO*) lParam2; int nResult = 0; switch (lParamSort) { case 0: // File name nResult = pItem1->strFileName.CompareNoCase (pItem2->strFileName); break; case 1: // File size nResult = pItem1->nFileSizeLow - pItem2->nFileSizeLow; break; case 2: // Date and time nResult = ::CompareFileTime (&pItem1->ftLastWriteTime, &pItem2->ftLastWriteTime); break; } return nResult; } When i debuged lParam1 and lParam2 are getting value as '0'. Any hekp please Thanks
-
I have a list view which needs to be sorted based on a click on header.I am using the ListCtrl.SortItems() function. But it is crashing when i clicked on the header.For better understanding i have listed the code. void CDirTreeDemoView::OnColumnClick(NMHDR* pNMHDR, LRESULT* pResult) { NM_LISTVIEW* pNMListView = (NM_LISTVIEW*) pNMHDR; this->GetListCtrl().SortItems (CompareFunc, pNMListView->iSubItem); *pResult = 0; } int CALLBACK CDirTreeDemoView::CompareFunc (LPARAM lParam1, LPARAM lParam2,LPARAM lParamSort) { ITEMINFO* pItem1 = (ITEMINFO*) lParam1; ITEMINFO* pItem2 = (ITEMINFO*) lParam2; int nResult = 0; switch (lParamSort) { case 0: // File name nResult = pItem1->strFileName.CompareNoCase (pItem2->strFileName); break; case 1: // File size nResult = pItem1->nFileSizeLow - pItem2->nFileSizeLow; break; case 2: // Date and time nResult = ::CompareFileTime (&pItem1->ftLastWriteTime, &pItem2->ftLastWriteTime); break; } return nResult; } When i debuged lParam1 and lParam2 are getting value as '0'. Any hekp please Thanks
Silly question, but... Are you setting lParam when inserting the items in the list? -- jlr http://jlamas.blogspot.com/[^]
-
I have a list view which needs to be sorted based on a click on header.I am using the ListCtrl.SortItems() function. But it is crashing when i clicked on the header.For better understanding i have listed the code. void CDirTreeDemoView::OnColumnClick(NMHDR* pNMHDR, LRESULT* pResult) { NM_LISTVIEW* pNMListView = (NM_LISTVIEW*) pNMHDR; this->GetListCtrl().SortItems (CompareFunc, pNMListView->iSubItem); *pResult = 0; } int CALLBACK CDirTreeDemoView::CompareFunc (LPARAM lParam1, LPARAM lParam2,LPARAM lParamSort) { ITEMINFO* pItem1 = (ITEMINFO*) lParam1; ITEMINFO* pItem2 = (ITEMINFO*) lParam2; int nResult = 0; switch (lParamSort) { case 0: // File name nResult = pItem1->strFileName.CompareNoCase (pItem2->strFileName); break; case 1: // File size nResult = pItem1->nFileSizeLow - pItem2->nFileSizeLow; break; case 2: // Date and time nResult = ::CompareFileTime (&pItem1->ftLastWriteTime, &pItem2->ftLastWriteTime); break; } return nResult; } When i debuged lParam1 and lParam2 are getting value as '0'. Any hekp please Thanks
This link should help http://www.codeproject.com/buglist/listcontrolsortitemsbug.asp
-
I have a list view which needs to be sorted based on a click on header.I am using the ListCtrl.SortItems() function. But it is crashing when i clicked on the header.For better understanding i have listed the code. void CDirTreeDemoView::OnColumnClick(NMHDR* pNMHDR, LRESULT* pResult) { NM_LISTVIEW* pNMListView = (NM_LISTVIEW*) pNMHDR; this->GetListCtrl().SortItems (CompareFunc, pNMListView->iSubItem); *pResult = 0; } int CALLBACK CDirTreeDemoView::CompareFunc (LPARAM lParam1, LPARAM lParam2,LPARAM lParamSort) { ITEMINFO* pItem1 = (ITEMINFO*) lParam1; ITEMINFO* pItem2 = (ITEMINFO*) lParam2; int nResult = 0; switch (lParamSort) { case 0: // File name nResult = pItem1->strFileName.CompareNoCase (pItem2->strFileName); break; case 1: // File size nResult = pItem1->nFileSizeLow - pItem2->nFileSizeLow; break; case 2: // Date and time nResult = ::CompareFileTime (&pItem1->ftLastWriteTime, &pItem2->ftLastWriteTime); break; } return nResult; } When i debuged lParam1 and lParam2 are getting value as '0'. Any hekp please Thanks
When populating the list, are you also calling
SetItemData()?
"One must learn from the bite of the fire to leave it alone." - Native American Proverb