From 5b3e83cb6b95dda7db4d1ced5621090a03bfd37d Mon Sep 17 00:00:00 2001
From: Nomango <569629550@qq.com>
Date: Wed, 11 Oct 2017 11:15:17 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E5=88=9B=E5=BB=BA=E7=AA=97?=
 =?UTF-8?q?=E5=8F=A3=E5=87=BD=E6=95=B0?=
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---
 Easy2D/Win/winbase.cpp | 72 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)

diff --git a/Easy2D/Win/winbase.cpp b/Easy2D/Win/winbase.cpp
index b7b7004f..64d436cb 100644
--- a/Easy2D/Win/winbase.cpp
+++ b/Easy2D/Win/winbase.cpp
@@ -1,4 +1,7 @@
 #include "winbase.h"
+#include <Windows.h>
+#include <tchar.h>
+#include <atltypes.h>
 
 static steady_clock::time_point nNow;
 
@@ -10,4 +13,73 @@ steady_clock::time_point GetNow()
 void FlushSteadyClock()
 {
 	nNow = steady_clock::now();	// 获取当前时间
+}
+
+LONGLONG GetInterval(steady_clock::time_point nLast)
+{
+	return duration_cast<milliseconds>(nNow - nLast).count();
+}
+
+void WindowCenter(HWND hWnd)
+{
+	// 获取屏幕分辨率
+	int screenWidth = GetSystemMetrics(SM_CXSCREEN);
+	int screenHeight = GetSystemMetrics(SM_CYSCREEN);
+	// 获取窗口大小
+	CRect rcWindow;
+	GetWindowRect(hWnd, &rcWindow);
+	// 设置窗口在屏幕居中
+	SetWindowPos(hWnd, HWND_TOP,
+		(screenWidth - rcWindow.Size().cx) / 2,
+		(screenHeight - rcWindow.Size().cy) / 2,
+		rcWindow.Size().cx,
+		rcWindow.Size().cy,
+		SWP_SHOWWINDOW | SWP_NOSIZE);
+}
+
+void CreateGameWindow()
+{
+	HWND _wnd;
+	HINSTANCE s_hInstance;
+	if (!s_hInstance)
+	{
+		s_hInstance = GetModuleHandle(NULL);		// Grab An Instance For Our Window
+
+		WNDCLASS  wc;								// Windows Class Structure
+
+													// Redraw On Size, And Own DC For Window.
+		wc.style = 0;
+		wc.lpfnWndProc = _SoundPlayProc;			// WndProc Handles Messages
+		wc.cbClsExtra = 0;							// No Extra Window Data
+		wc.cbWndExtra = 0;							// No Extra Window Data
+		wc.hInstance = s_hInstance;					// Set The Instance
+		wc.hIcon = 0;								// Load The Default Icon
+		wc.hCursor = LoadCursor(NULL, IDC_ARROW);	// Load The Arrow Pointer
+		wc.hbrBackground = NULL;					// No Background Required For GL
+		wc.lpszMenuName = NULL;						// We Don't Want A Menu
+		wc.lpszClassName = _T("Easy2dCallbackWnd");		// Set The Class Name
+
+		if (!RegisterClass(&wc)						// Register Our Class
+			&& GetLastError() != 1410)				// Class is Already Existent
+		{
+			return;
+		}
+	}
+
+	_wnd = CreateWindowEx(
+		WS_EX_APPWINDOW,							// Extended Style For The Window
+		_T("Easy2dCallbackWnd"),							// Class Name
+		NULL,										// Window Title
+		WS_POPUPWINDOW,								// Defined Window Style
+		0, 0,										// Window Position
+		0, 0,										// Window Width And Height
+		NULL,										// No Parent Window
+		NULL,										// No Menu
+		s_hInstance,								// Instance
+		NULL);										// No Param
+
+	if (_wnd)
+	{
+		//SetWindowLongPtr(_wnd, GWLP_USERDATA, (LONG_PTR)this);
+	}
 }
\ No newline at end of file