[alexey_ma]

Вот абсолютно рабочая функция получающая текст активного таба в чужом процессе . Правда на С++, но механизм , я думаю понятен.

//---------------------------------------------------------------------------------
//                 GetActiveTabText
//---------------------------------------------------------------------------------
// This function return the text(caption) of active page
// in the tabcontrol window, that it get.
//---------------------------------------------------------------------------------
typedef LPVOID (__stdcall * PFNVIRTALLEX)(HANDLE, LPVOID, DWORD, DWORD,DWORD);

 CString GetActiveTabText(HWND hWnd)
{
    DWORD dwProcessId;
    HANDLE hProcess;
    PFNVIRTALLEX pfnVirtualAllocEx;
    TC_ITEM *ptci;
    TC_ITEM tci;
    CString Text;
    int TabSelected;
    char Buffer[255] = "\n";
    TabSelected = TabCtrl_GetCurSel(hWnd);
    GetWindowThreadProcessId(hWnd, &dwProcessId);
    hProcess = OpenProcess( PROCESS_VM_OPERATION | PROCESS_VM_READ | PROCESS_VM_WRITE, FALSE, dwProcessId);
    if (hProcess == NULL)
    {
        MessageBox(NULL,"Could not communicate with process","", MB_OK | MB_ICONWARNING);  
        return "";//0;
    }
/// Allocate memory in the remote process's address space
//get procAddress this way so the code can be compiled on win 95/98
    pfnVirtualAllocEx = (PFNVIRTALLEX) GetProcAddress(GetModuleHandle("KERNEL32.DLL"),"VirtualAllocEx");

    ptci = (TC_ITEM*) pfnVirtualAllocEx(hProcess, NULL, sizeof(TC_ITEM)+25, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
    tci.mask = TCIF_TEXT;
    tci.pszText = (LPTSTR) (ptci + 1) ;
    tci.cchTextMax = 25;
// Write the local TC_ITEM structure to the remote memory block
    WriteProcessMemory(hProcess, ptci, &tci, sizeof(tci), NULL);
    TabCtrl_GetItem(hWnd,TabSelected ,ptci);
// Read the remote text string into the end of our clipboard buffer
    ReadProcessMemory(hProcess, ptci + 1,Buffer, 24, NULL);
// Free the memory in the remote process's address space
    VirtualFreeEx(hProcess, ptci, 0, MEM_RELEASE);
    CloseHandle(hProcess);
    Text = Buffer;
    return Text;
}
// -----------------------------------------------------