如何获取别的进程的TreeView控件的内容

extern "C" long EXPORT __stdcall GetRootItem (long Thwnd,char *filestr) {

TVITEM tvi, *_tvi;

char *_item;

char item[256];

unsigned long pid;

HANDLE process;

long ret=(long)((CTreeCtrl*)CWnd::FromHandle((HWND)Thwnd))->GetRootItem();

if (ret) {

/*

GetWindowThreadProcessId

说明

获取与指定窗口关联在一起的一个进程和线程标识符

返回值

Long，拥有窗口的线程的标识符

参数表

参数 类型及说明

lpdwProcessId Long，指定一个变量，用于装载拥有那个窗口的一个进程的标识符

hwnd Long，指定窗口句柄

*/

GetWindowThreadProcessId((HWND)Thwnd, &pid);

//用全部权限打开进程

process=OpenProcess(PROCESS_VM_OPERATION |PROCESS_VM_READ | PROCESS_VM_WRITE |PROCESS_QUERY_INFORMATION, FALSE, pid);

//给_lvi，_item分配进程级的虚拟内存空间

_tvi=(TVITEM*)VirtualAllocEx(process, NULL, sizeof(TVITEM), MEM_COMMIT, PAGE_READWRITE);

_item=(char*)VirtualAllocEx(process, NULL, 256, MEM_COMMIT, PAGE_READWRITE);

tvi.cchTextMax=256;

tvi.hItem=(HTREEITEM)ret;

tvi.mask=TVIF_TEXT;

tvi.pszText=_item;

//把_lvi写入进程

WriteProcessMemory(process, _tvi, &tvi, sizeof(TVITEM), NULL);

//发消息得到数据

::SendMessage((HWND)Thwnd, TVM_GETITEM, 0 , (LPARAM)_tvi);

//从进程中读出数据

ReadProcessMemory(process, _item, item, 256, NULL);

//copy data

memcpy(filestr,item,256);

//free memory

VirtualFreeEx(process, _tvi, 0, MEM_RELEASE);

VirtualFreeEx(process, _item, 0, MEM_RELEASE);

}

return ret;

}

extern "C" long EXPORT __stdcall GetNextItem (HWND Thwnd,long next,char *filestr) {

TVITEM tvi, *_tvi;

char item[256];

char *_item;

unsigned long pid;

HANDLE process;

long ret=(long)((CTreeCtrl*)CWnd::FromHandle(Thwnd))->GetNextSiblingItem((HTREEITEM)next);

if (ret) {

GetWindowThreadProcessId(Thwnd, &pid);

process=OpenProcess(PROCESS_VM_OPERATION |PROCESS_VM_READ | PROCESS_VM_WRITE |PROCESS_QUERY_INFORMATION, FALSE, pid);

_tvi=(TVITEM*)VirtualAllocEx(process, NULL, sizeof(TVITEM), MEM_COMMIT, PAGE_READWRITE);

_item=(char*)VirtualAllocEx(process, NULL, 256, MEM_COMMIT, PAGE_READWRITE);

tvi.cchTextMax=256;

tvi.hItem=(HTREEITEM)ret;

tvi.mask=TVIF_TEXT;

tvi.pszText=_item;

WriteProcessMemory(process, _tvi, &tvi, sizeof(TVITEM), NULL);

::SendMessage(Thwnd, TVM_GETITEM, 0 , (LPARAM)_tvi);

ReadProcessMemory(process, _item, item, 256, NULL);

memcpy(filestr,item,256);

VirtualFreeEx(process, _tvi, 0, MEM_RELEASE);

VirtualFreeEx(process, _item, 0, MEM_RELEASE);

}

return ret;

}

以上的函数可以放到dll中在vb,vc里调用，但如果机器没装vc,在vb里调用需要MFC42D.DLL，MSVCRTD.DLL。