微调

2024-04-09 10:25:24 +08:00 · 2024-04-09 10:25:24 +08:00 · 0179b5cff3
parent bc19c01a9b
commit 0179b5cff3
1 changed files with 5 additions and 0 deletions
--- a/modules/twain_user/HGTwainImpl.cpp
+++ b/modules/twain_user/HGTwainImpl.cpp
@ -237,6 +237,11 @@ HGResult HGTwainDSMImpl::CreateSelectedDSEx(class HGTwainDSImpl** dsImpl)

    std::string sourceName = getCfgValue("twain", "source", std::string(""));

+    if (m_vds.empty())
+    {
+        return HGBASE_ERR_FAIL;
+    }
+
    TW_IDENTITY selectDS;
    memset(&selectDS, 0, sizeof(TW_IDENTITY));
    if (-2 == show_twain_srclist_ui(&m_vds[0], m_vds.size(), sourceName.c_str(), m_hWnd, &selectDS))