When a user clicks on a image in a listview icon the program receives through a WM_NOTIFY the message NM_CLICK.
When it arrives the lParam contains a pointer on a NMITEMACTIVATE structure.
Normally The iItem meber of this structure has a value to use with GetItem to retrieve info about clicked item.
In 64 bits (or in pc) the iItem member always is -1.
To resolve this I must send send a LVM_HITTEST. See the code
LRESULT Left_OnNotify(HWND __hWnd,WPARAM __wParam,LPARAM __lParam)
{
LVITEM _Lvi ;
char _szTmp[MAX_PATH] ;
char _szImg[MAX_PATH] ;
LPNMITEMACTIVATE _lpItem ;
LVHITTESTINFO _Hit ;
_lpItem = (LPNMITEMACTIVATE) __lParam ;
if(_lpItem->hdr.code == NM_CLICK)
{
if(_lpItem->hdr.idFrom == 0x2001)
{
memset(&_Lvi,0,sizeof(LVITEM)) ;
memset(_szTmp,0,MAX_PATH) ;
_Hit.pt.x = _lpItem->ptAction.x ;
_Hit.pt.y = _lpItem->ptAction.y ;
_Hit.flags = LVHT_ONITEMICON ;
_Hit.iItem = 0 ;
_Lvi.iItem = SendMessage(hListView,LVM_HITTEST,0,(LPARAM) &_Hit) ;
_Lvi.mask = LVIF_PARAM | LVIF_TEXT ;
_Lvi.cchTextMax = MAX_PATH ;
_Lvi.pszText = _szTmp ;
SendMessage(hListView,LVM_GETITEM,0,(LPARAM) &_Lvi) ;
if(_Lvi.iItem != -1)
{
_Lvi.mask = LVIF_PARAM|LVIF_TEXT ;
_Lvi.pszText = _szTmp ;
_Lvi.cchTextMax = MAX_PATH ;
if(lstrlen(_szTmp))
{
wsprintf(_szImg,"%s\\%s",szCurrentPath,_szTmp) ;
if(PathFileExists(_szImg))
{
lstrcpy(szCurrentFile,_szImg) ;
}
}
}
}
}
Is there an other solution. This one works very well but I am suprised about -1.
