C++ Windows ListView LVM_GETITEM iImage始终为零

我正在尝试用桌面列表视图做一些事情。我可以使用LVM_GETITEM获取项的文本，但是iImage struct成员总是零，状态也是零。我正在运行win764，并使用devc++（gcc）为64进行编译。我还尝试将其编译为32位，并在XP上进行测试，结果相同……只将文本、图像和状态赋值为零。我还可以获取项目计数ListView_GetItemCount（）没有问题

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您正在为文本分配虚拟内存。您还必须为

LVITEM

分配虚拟内存。然后将文本内存分配给

lvItem.pszText

，然后读取这两个内存。对于64位系统，必须对其进行64位编译。添加更多错误检查

HANDLE hProcess = OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_READ |
     PROCESS_VM_WRITE | PROCESS_QUERY_INFORMATION, FALSE, dwProcessID);

const DWORD dwBufSize = 1024;
void* pbuf = VirtualAllocEx(hProcess, NULL, dwBufSize, MEM_COMMIT, PAGE_READWRITE);
void* pitem = VirtualAllocEx(hProcess, NULL, sizeof(LVITEM), MEM_COMMIT, PAGE_READWRITE);

LVITEM lvItem = { 0 };
lvItem.mask = LVIF_TEXT | LVIF_IMAGE | LVIF_PARAM | LVIF_STATE;
lvItem.iItem = 0;
lvItem.iSubItem = 0;
lvItem.cchTextMax = MAX_PATH;
lvItem.pszText = (char*)pbuf;

WriteProcessMemory(hProcess, pitem, &lvItem, sizeof(LVITEM), NULL);

if (SendMessage(hwndListView, LVM_GETITEM, 0, (LPARAM)(LVITEM*)(pitem)))
{
    char buf[dwBufSize];
    if (ReadProcessMemory(hProcess, pbuf, buf, dwBufSize, 0))
    {
        OutputDebugString(buf);
        OutputDebugString(", ");
        if (ReadProcessMemory(hProcess, pitem, &lvItem, sizeof(LVITEM), 0))
        {
            _itoa_s(lvItem.iImage, buf, 10);
            OutputDebugString(buf);
            OutputDebugString("\n");
        }
    }
}

VirtualFreeEx(hProcess, pitem, 0, MEM_RELEASE);
VirtualFreeEx(hProcess, pbuf, 0, MEM_RELEASE);
CloseHandle(hProcess);

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原来我不需要再这样做了，但是谢谢你的帮助！我会投票赞成你的答案，这可能是最好的。不建议使用此方法访问桌面。

HANDLE hProcess = OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_READ |
     PROCESS_VM_WRITE | PROCESS_QUERY_INFORMATION, FALSE, dwProcessID);

const DWORD dwBufSize = 1024;
void* pbuf = VirtualAllocEx(hProcess, NULL, dwBufSize, MEM_COMMIT, PAGE_READWRITE);
void* pitem = VirtualAllocEx(hProcess, NULL, sizeof(LVITEM), MEM_COMMIT, PAGE_READWRITE);

LVITEM lvItem = { 0 };
lvItem.mask = LVIF_TEXT | LVIF_IMAGE | LVIF_PARAM | LVIF_STATE;
lvItem.iItem = 0;
lvItem.iSubItem = 0;
lvItem.cchTextMax = MAX_PATH;
lvItem.pszText = (char*)pbuf;

WriteProcessMemory(hProcess, pitem, &lvItem, sizeof(LVITEM), NULL);

if (SendMessage(hwndListView, LVM_GETITEM, 0, (LPARAM)(LVITEM*)(pitem)))
{
    char buf[dwBufSize];
    if (ReadProcessMemory(hProcess, pbuf, buf, dwBufSize, 0))
    {
        OutputDebugString(buf);
        OutputDebugString(", ");
        if (ReadProcessMemory(hProcess, pitem, &lvItem, sizeof(LVITEM), 0))
        {
            _itoa_s(lvItem.iImage, buf, 10);
            OutputDebugString(buf);
            OutputDebugString("\n");
        }
    }
}

VirtualFreeEx(hProcess, pitem, 0, MEM_RELEASE);
VirtualFreeEx(hProcess, pbuf, 0, MEM_RELEASE);
CloseHandle(hProcess);