Windows IStillImage 接口：无法获取设备列表

发布于 2024-11-29 04:43:31 字数 724 浏览 0 评论 0原文

请看一下我的代码：

#include <windows.h>
#include <Sti.h>
#include <iostream>
#pragma  comment (lib, "Sti.Lib")

using namespace std;
void main ()
{
    HRESULT hr = CoInitialize(NULL);
    PSTI iface = 0;
    hr = StiCreateInstance(GetModuleHandle(NULL), STI_VERSION, &iface, NULL);   
    DWORD numDevices = 0;
    STI_DEVICE_INFORMATION* devices = NULL;
    hr = iface->GetDeviceList(NULL, NULL, &numDevices, (void**) &devices);
    cout << hr;
    hr = iface->Release();
    cin.get();
}

GetDeviceList 给我“索引中的指定键没有匹配项”。知道这意味着什么吗？谷歌似乎在这里没有帮助。其他一切都很好（我的意思是初始化）。

提前致谢。

更新：它可以在Win XP虚拟机上运行，但在主机Win 7 x64上仍然失败。奇怪的。

原文

Please take a look at my code:

#include <windows.h>
#include <Sti.h>
#include <iostream>
#pragma  comment (lib, "Sti.Lib")

using namespace std;
void main ()
{
    HRESULT hr = CoInitialize(NULL);
    PSTI iface = 0;
    hr = StiCreateInstance(GetModuleHandle(NULL), STI_VERSION, &iface, NULL);   
    DWORD numDevices = 0;
    STI_DEVICE_INFORMATION* devices = NULL;
    hr = iface->GetDeviceList(NULL, NULL, &numDevices, (void**) &devices);
    cout << hr;
    hr = iface->Release();
    cin.get();
}

GetDeviceList gives me "There was no match for the specified key in the index." Any idea as to what it means? Google doesn't seem to help here.
Everything else is OK (initialization, I mean).

Thanks in advance.

Update: It works on Win XP virtual machine, but still fails on host Win 7 x64. Odd.

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