//This function builds a tree of nodes given a rootNode and level
//A node is represented by an UI element
//The function builds the tree with DFS iteration
HRESULT listTree(int level, IUIAutomationElement* rootNode, IUIAutomationTreeWalker* walker)
{
HRESULT hr;
IUIAutomationElement* element = nullptr;
auto base = std::wstring(level, L'-');
//Get the first element
hr = walker->GetFirstChildElement(rootNode, &element);
if (FAILED(hr) || element == nullptr)
{
return hr;
}
while (element != nullptr)
{
//Is this a control element?
BOOL isControl;
hr = element->get_CurrentIsControlElement(&isControl);
if (FAILED(hr))
{
logToFile(base + L"Failed element is control type");
logToFile(base + L"Error code: " + std::to_wstring(hr));
}
else if (isControl)
{
//Yes it is -> print it's details
BSTR controlName;
BSTR controlType;
CONTROLTYPEID controlTypeId;
hr = element->get_CurrentName(&controlName);
hr += element->get_CurrentLocalizedControlType(&controlType);
hr += element->get_CurrentControlType(&controlTypeId);
if (FAILED(hr))
{
logToFile(base + L"Failed element control type");
}
if (controlName != nullptr)
{
logToFile(base + L" NAME: " + static_cast<std::wstring>(controlName));
}
if (controlType != nullptr)
{
logToFile(base + L" TYPE: " + static_cast<std::wstring>(controlType));
}
if (controlTypeId != NULL)
{
logToFile(base + L" ID: " + std::to_wstring(controlTypeId));
}
}
//Continue with children of the current element
listTree(level * 2, element, walker);
//After that, the next element to be locked at, is it's sibling
IUIAutomationElement* next = nullptr;
hr = walker->GetNextSiblingElement(element, &next);
if (FAILED(hr))
{
logToFile(base + L"Failed next element");
logToFile(base + L"Error code: " + std::to_wstring(hr));
}
//Free the memory used for the current element
SAFE_RELEASE(element);
//Update the pointer to continue iteration
element = next;
}
return S_OK;
}