来自sysListView32树的文本 [英] Text from sysListView32 tree

问题描述

尝试从另一个进程获取一个字符串sysListView32。
列表是一个树。并且对于第一列返回一个空字符串。
告诉我问题在哪里？

Itrying to get a out of a string sysListView32 from another process. The list is a tree. And for the first column returns an empty string. Tell me where is the problem?

树的图片：
tree
代码：

Image of tree: tree Code:

vProcess = OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_READ |
    PROCESS_VM_WRITE, False, vProcessId);
 vPointer = VirtualAllocEx(vProcess, NULL, 4096, MEM_RESERVE | MEM_COMMIT,
    PAGE_READWRITE);
 vItem.mask = LVIF_TEXT;
 vItem.iItem = I;
 vItem.iSubItem = J;
 vItem.cchTextMax = sizeof(vBuffer);
 vItem.pszText = (wchar_t*)vPointer +sizeof(TLVItem);
 WriteProcessMemory(vProcess, vPointer, &vItem, sizeof(TLVItem),
            &vNumberOfBytesRead);
 SendMessageW(mHandle, LVM_GETITEMW, I, (LPARAM)vPointer);
 ReadProcessMemory(vProcess, (wchar_t*)vPointer +sizeof(TLVItem),
            vBuffer, sizeof(vBuffer), &vNumberOfBytesRead);
 RESULT = UnicodeString(vBuffer);

 VirtualFreeEx(vProcess, vPointer, 0, MEM_RELEASE); // free mem
 CloseHandle(vProcess);

推荐答案

过程，所以它不存在。

You didn't VirtualAlloc the memory block in the target process, so it isn't there.

为什么不使用其中一个辅助API来获取这个信息的跨进程，而不是使用极端的hackery。例如，UIA下载到XP并支持：

Instead of using extreme hackery to try to get this, why not use one of the accessibility APIs to get this info cross-process. UIA, for example, goes down to XP and supports this:

http://msdn.microsoft.com/en-us/library/ms726294（VS.85）.aspx

Martyn

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