ListCount=SendMessage (HWND, LVM_GETITEMCOUNT, 0, 0)
ItemText=SendMessage (hlist LVM_GETITEMTEXT, 0, 0)
ListCount can normal access lines, but get ItemText will go wrong

CodePudding user response:

To get the data not so simple!

Need to work, with several other apis to complete,

Refer to this:
Read listview control the content of other software

CodePudding user response:

For reference only, although not VB6:

//-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
//read the Item in the ListView 
//hWindow as the goal of the ListView handle 
//strlist used to store the Item of ListView string 
//http://www.ccrun.com 
//by ccrun (old demon) 
//-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
Void MyGetListViewItem (HWND hWindow, TStrings * strlist) 
{
Const nMaxLen=1023; 
Char szBuf [nMaxLen + 1]; 
Char buf [nMaxLen + 1]; 

Int nLVItemCount; 
Int nColumns; 
DWORD dwProcessID; 
HANDLE hProcess; 
HANDLE hHeaderCtrl; 
LVITEM lvItemLocal; 
HDITEM hdItemLocal; 
DWORD dwBytesRead dwBytesWrite; 
Bool bSuccess, bWriteOK; 

//note: this article from www.ccrun.com, by ccrun (old demon), reprint please indicate the source, 
//this article from the c + + Builder research - http://www.ccrun.com/article.asp? I=583 & amp; D=eahk4z 
//in order to prevent some irresponsible ZhuanZaiZhe, so out of it, join statements in your code, please forgive me, 

GetWindowThreadProcessId (hWindow, & amp; DwProcessID); 
HProcess=OpenProcess (PROCESS_ALL_ACCESS, FALSE, dwProcessID); 
if(! HProcess)//get a handle to the specified process 
return; 
//allocate storage space within a specified process 
LPVOID lpTextRemote=VirtualAllocEx (hProcess, NULL, nMaxLen + 1, MEM_COMMIT, PAGE_READWRITE); 
LPVOID lpListItemRemote=VirtualAllocEx (hProcess, NULL, sizeof (LVITEM), MEM_COMMIT, PAGE_READWRITE); 
LPVOID lpHeadItemRemote=VirtualAllocEx (hProcess, NULL, sizeof (HDITEM), MEM_COMMIT, PAGE_READWRITE); 
If ((! LpTextRemote) | | (! LpListItemRemote) | | (! LpHeadItemRemote))//can't allocate storage space within a specified process 
return; 

NLVItemCount=ListView_GetItemCount (hWindow); 
HHeaderCtrl=ListView_GetHeader (hWindow); 
NColumns=Header_GetItemCount (hHeaderCtrl); 
If (nColumns<=0) {
NColumns=1; 
} else {
Buf [0]=0; 
for (int j=0; JZeroMemory (szBuf, nMaxLen + 1); 
BWriteOK=WriteProcessMemory (hProcess, lpTextRemote, (LPVOID) szBuf, nMaxLen + 1, (LPDWORD) & amp; DwBytesWrite); 
if(! BWriteOK)//write memory error 
return; 
HdItemLocal. Mask=HDI_TEXT; 
HdItemLocal. CchTextMax=nMaxLen; 
HdItemLocal. PszText=(LPTSTR lpTextRemote); 
DwBytesWrite=0; 
BWriteOK=WriteProcessMemory (hProcess, lpHeadItemRemote, (LPVOID) & amp; HdItemLocal, sizeof (HDITEM), (LPDWORD) & amp; DwBytesWrite); 
if(! BWriteOK)//write memory error 
return; 

SendMessage (hHeaderCtrl HDM_GETITEM, (WPARAM), j (LPARAM) lpHeadItemRemote); 
BSuccess=ReadProcessMemory (hProcess, lpTextRemote szBuf, nMaxLen + 1, & amp; DwBytesRead); 
//storage space to read text from the specified process 
if(! BSuccess)//
 to read text within a specified processreturn; 
If (j> 0) strcat (buf, "|"); 
Strcat (buf, AnsiString (szBuf). C_str ()); 
} 
Strlist - & gt; Add (buf); 
} 
//strlist - & gt; Add (" the number of Columns ListView: "+ String (nColumns)); 
//strlist - & gt; Add (" -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- "); 

for (int i=0; iBuf [0]=0; 
for (int j=0; JZeroMemory (szBuf, nMaxLen + 1); 
BWriteOK=WriteProcessMemory (hProcess, lpTextRemote, (LPVOID) szBuf, nMaxLen + 1, (LPDWORD) & amp; DwBytesWrite); 
if(! BWriteOK)//write memory error 
return; 
LvItemLocal. IItem=I; 
LvItemLocal. ISubItem=j; 
LvItemLocal. Mask=LVIF_TEXT; 
LvItemLocal. CchTextMax=nMaxLen; 
LvItemLocal. PszText=(LPTSTR lpTextRemote); 
DwBytesWrite=0; 
BWriteOK=WriteProcessMemory (hProcess, lpListItemRemote, (LPVOID) & amp; LvItemLocal, sizeof (LVITEM), (LPDWORD) & amp; DwBytesWrite); 
if(! BWriteOK)//write memory error 
return; 
SendMessage (hWindow LVM_GETITEMTEXT, (WPARAM), I (LPARAM) lpListItemRemote); 
BSuccess=ReadProcessMemory (hProcess, lpTextRemote szBuf, nMaxLen + 1, & amp; DwBytesRead); 
//storage space to read text from the specified process 
if(! BSuccess)//
 to read text within a specified processreturn; 
If (j> 0) strcat (buf, "|"); 
Strcat (buf, AnsiString (szBuf). C_str ()); 
} 
Strlist - & gt; Add (buf); 
}//end of the for (I) 
//release of storage space within a specified process 
VirtualFreeEx (hProcess, lpHeadItemRemote, 0, MEM_RELEASE); 
VirtualFreeEx (hProcess, lpListItemRemote, 0, MEM_RELEASE); 
VirtualFreeEx (hProcess, lpTextRemote, 0, MEM_RELEASE); 
//close the handle to the specified process 
The CloseHandle (hProcess); 
}