Windows 10: Get caption of child window button on windows using uiautomation with c++

I want to get this Zoom Meeting's "Mute My Audio" caption on windows using uiautomation with C++

https://preview.redd.it/tneok0zw2x3...bp&s=9c2dfb87bda9fcaafffd6653f61b2a61e828c9c7



this is my calling current code:

// Get the handle of the Zoom Meetings window. zoomWnd = ::FindWindow(NULL, "Zoom Meeting"); if (zoomWnd != NULL) { std::cout<<"zoom meeting"<<"\n"; IUIAutomationElement *zoom = GetTopLevelWindowByName(L"Zoom Meeting"); rawListDescendants(zoom, "Meeting"); }

OUTPUT:

zoom meeting sName: ContentLeftPanel sName: VideoContainerWnd sName: Video Content sName: sName: sName:

GetTopLevelWindowByName Function definitions:

IUIAutomationElement *GetTopLevelWindowByName(LPWSTR windowName) { if (windowName == NULL) { return NULL; } VARIANT varProp; varProp.vt = VT_BSTR; varProp.bstrVal = SysAllocString(windowName); if (varProp.bstrVal == NULL) { return NULL; } IUIAutomationElement *pRoot = NULL; IUIAutomationElement *pFound = NULL; // Get the desktop element. HRESULT hr = g_pAutomation->GetRootElement(&pRoot); if (FAILED(hr) || pRoot == NULL) { goto cleanup; } // Get a top-level element by name, such as "Program Manager" IUIAutomationCondition *pCondition = NULL; hr = g_pAutomation->CreatePropertyCondition(UIA_NamePropertyId, varProp, &pCondition); if (FAILED(hr)) { goto cleanup; } pRoot->FindFirst(TreeScope_Children, pCondition, &pFound); cleanup: if (pRoot != NULL) pRoot->Release(); if (pCondition != NULL) pCondition->Release(); VariantClear(&varProp); return pFound; }

rawListDescendants Function definitions:

void rawListDescendants(IUIAutomationElement *pParent, std::string windowType) { if (pParent == NULL) return; IUIAutomationTreeWalker *pControlWalker = NULL; IUIAutomationElement *pNode = NULL; g_pAutomation->get_RawViewWalker(&pControlWalker); if (pControlWalker == NULL) { goto cleanup; } pControlWalker->GetFirstChildElement(pParent, &pNode); if (pNode == NULL) { goto cleanup; } while (pNode) { BSTR desc; BSTR sName; pNode->get_CurrentLocalizedControlType(&desc); pNode->get_CurrentName(&sName); std::wcout<<"sName: "<<sName<<"\n"; //std::wcout<<"desc: "<<desc<<"\n"; // only go into windows and panes if (desc != NULL) if (0 == wcscmp(desc, L"window") || 0 == wcscmp(desc, L"pane")) rawListDescendants(pNode, windowType); if (desc != NULL) SysFreeString(desc); if (sName != NULL) SysFreeString(sName); // get the next element IUIAutomationElement *pNext; pControlWalker->GetNextSiblingElement(pNode, &pNext); pNode->Release(); pNode = pNext; } cleanup: if (pControlWalker != NULL) pControlWalker->Release(); if (pNode != NULL) pNode->Release(); return; }

Spy++ windows tree of Zoom Meeting window:

https://preview.redd.it/rkjul06p4x3...bp&s=5129f17724ac6e3e79e634e3caaf03a2ea65b11a

How can I crawl to child window and get it's button caption

I have no prior experience with this library so please elaborate as much you can (Thanks)

submitted by /u/ptah_chaser
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:)

 

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