Chapter 11 examples

Chapter11_SearchAlgorithms/DummyWindow.cpp

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+#include "DummyWindow.h"
+
+/*
+	THIS CODE EXISTS ONLY TO DISPLAY A WINDOW,
+	AND IS NOT RELEVANT TO THE EXAMPLE CODE
+*/
+
+std::map<HWND, DummyWindow*> DummyWindow::windowMap;
+
+DummyWindow::DummyWindow(HINSTANCE _instance) :  windowHandle(NULL), instance(_instance)
+{}
+
+DummyWindow::~DummyWindow(void)
+{
+	DummyWindow::unregisterWindow(this, this->windowHandle);
+}
+
+bool DummyWindow::initialize()
+{
+	WNDCLASSEX wcex;
+	wcex.cbSize = sizeof(WNDCLASSEX);
+	wcex.style          = CS_HREDRAW | CS_VREDRAW;
+	wcex.lpfnWndProc    = WndProc;
+	wcex.cbClsExtra     = 0;
+	wcex.cbWndExtra     = 0;
+	wcex.hInstance      = this->instance;
+	wcex.hIcon          = NULL; //LoadIcon(this->instance, MAKEINTRESOURCE(IDI_APPLICATION));
+	wcex.hCursor        = LoadCursor(NULL, IDC_ARROW);
+	wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);
+	wcex.lpszMenuName   = NULL;
+	wcex.lpszClassName  = L"gamhakwind";
+	wcex.hIconSm        = NULL; //LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_APPLICATION));
+
+	if (!RegisterClassEx(&wcex))
+	{
+		auto err = GetLastError();
+		return false;
+	}
+
+	this->windowHandle = CreateWindowA
+	(
+		"gamhakwind",
+		"Game Hacking - Chapter 11 - SearchAlgorithms",
+		WS_OVERLAPPEDWINDOW,
+		CW_USEDEFAULT, CW_USEDEFAULT,
+		420, 490,
+		NULL,
+		NULL,
+		this->instance,
+		NULL
+	);
+	if (this->windowHandle == NULL)
+	{
+		auto err = GetLastError();
+		//return false;
+	}
+
+	DummyWindow::registerWindow(this, this->windowHandle);
+
+	SetTimer(this->windowHandle, NULL, 50, NULL);
+
+	ShowWindow(this->windowHandle, SW_SHOW);
+	UpdateWindow(this->windowHandle);
+	return true;
+}
+
+void DummyWindow::finalize()
+{
+	this->callbackMap.clear();
+}
+
+int32_t DummyWindow::doMessageLoop()
+{
+	MSG msg;
+	while (GetMessage(&msg, NULL, 0, 0))
+	{
+		TranslateMessage(&msg);
+		DispatchMessage(&msg);
+	}
+	return static_cast<int32_t>(msg.wParam);
+}
+
+void DummyWindow::setMessageHandler(UINT message, windowMessageCallbackType callback)
+{
+	this->callbackMap[message] = callback;
+}
+
+LRESULT DummyWindow::onMessageReceived(HWND window, UINT message, WPARAM wparam, LPARAM lparam)
+{
+	auto found = this->callbackMap.find(message);
+	if (found != this->callbackMap.end())
+		return found->second(this, message, wparam, lparam);
+	return DefWindowProc(window, message, wparam, lparam);
+}
+
+void DummyWindow::registerWindow(DummyWindow* dummy, HWND window)
+{
+	DummyWindow::windowMap[window] = dummy;
+}
+void DummyWindow::unregisterWindow(DummyWindow* dummy, HWND window)
+{
+	auto found = DummyWindow::windowMap.find(window);
+	if (found != DummyWindow::windowMap.end())
+		DummyWindow::windowMap.erase(found);
+}
+DummyWindow* DummyWindow::findWindow(HWND window)
+{
+	auto found = DummyWindow::windowMap.find(window);
+	if (found != DummyWindow::windowMap.end())
+		return found->second;
+	return nullptr;
+}
+
+LRESULT DummyWindow::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
+{
+	auto dummy = DummyWindow::findWindow(hWnd);
+	if (dummy)
+		return dummy->onMessageReceived(hWnd, uMsg, wParam, lParam);
+	return DefWindowProc(hWnd, uMsg, wParam, lParam);
+}