BackgroundWindowManager.cpp

#include "BackgroundWindowManager.h"

HWND BackgroundWindowManager::s_workerw = nullptr;

BackgroundWindowManager::BackgroundWindowManager()
{
	m_progMan = FindWindow("Progman", "Program Manager");
	SendMessage(m_progMan, 0x0034, 4, 0);
	PDWORD_PTR result = nullptr;
	SendMessageTimeout(m_progMan, 0x052C, 0, 0, SMTO_NORMAL, 1000, result);

	// We enumerate all Windows, until we find one, that has the
	// SHELLDLL_DefView as a child. If we found that window, we take its next
	// sibling and assign it to workerw.
	EnumWindows(
	    [](HWND tophandle, LPARAM topparamhandle)
	    {
		    HWND p = FindWindowEx(tophandle, nullptr, "SHELLDLL_DefView", nullptr);

		    if (p != nullptr)
		    {
			    // Gets the WorkerW Window after the current one.
			    s_workerw = FindWindowEx(nullptr, tophandle, "WorkerW", nullptr);
		    }

		    return TRUE;
	    },
	    0);
}

BackgroundWindowManager::~BackgroundWindowManager()
{
	DestroyWindow(s_workerw); // Does this even do anything?
	s_workerw = nullptr;
	SendMessage(m_progMan, 0x0034, 4, 0);
}

HWND BackgroundWindowManager::GetHandle()
{
	return s_workerw;
}