snes9xgit: [gocha] Improved window resize accuracy, it should work better for 1x.

From 623d954df672d3c63884d8ed0cf95a43b366a5d1 Mon Sep 17 00:00:00 2001
From: gocha <gochaism@gmail.com>
Date: Mon, 10 Jan 2011 13:42:01 +0900
Subject: [PATCH 1/3] Improved window resize accuracy, it should work better for 1x.
 Thanks http://blogs.msdn.com/b/oldnewthing/archive/2003/09/11/54885.aspx

---
 win32/wsnes9x.cpp |   32 +++++++++++++++++++++++---------
 1 files changed, 23 insertions(+), 9 deletions(-)

diff --git a/win32/wsnes9x.cpp b/win32/wsnes9x.cpp
index f353532..23f1f79 100644
--- a/win32/wsnes9x.cpp
+++ b/win32/wsnes9x.cpp
@@ -2058,15 +2058,29 @@ LRESULT CALLBACK WinProc(
        case ID_WINDOW_SIZE_2X:
        case ID_WINDOW_SIZE_3X:
        case ID_WINDOW_SIZE_4X:
-           UINT factor,newWidth,newHeight;
-           factor = (wParam & 0xffff) - ID_WINDOW_SIZE_1X + 1;
-           newWidth = GUI.AspectWidth * factor;
-           newHeight = (GUI.HeightExtend ? SNES_HEIGHT_EXTENDED : SNES_HEIGHT) * factor;
-           newWidth += 2*(GetSystemMetrics(SM_CXBORDER) + GetSystemMetrics(SM_CXDLGFRAME));
-           newHeight += 2*(GetSystemMetrics(SM_CYBORDER) + GetSystemMetrics(SM_CYDLGFRAME)) +
-               GetSystemMetrics(SM_CYCAPTION) + (GUI.HideMenu ? 0 : (GetSystemMetrics(SM_CYMENU) +
-                         (factor<2 ? GetSystemMetrics(SM_CYMENU) : 0)));
-           SetWindowPos(GUI.hWnd,0,0,0,newWidth,newHeight,SWP_NOMOVE);
+           {
+               UINT factor, newWidth, newHeight;
+               factor = (wParam & 0xffff) - ID_WINDOW_SIZE_1X + 1;
+               newWidth = GUI.AspectWidth * factor;
+               newHeight = (GUI.HeightExtend ? SNES_HEIGHT_EXTENDED : SNES_HEIGHT) * factor;
+
+               RECT rcWindow = { 0, 0, newWidth, newHeight };
+               AdjustWindowRectEx(&rcWindow, GetWindowStyle(GUI.hWnd), !GUI.HideMenu, GetWindowExStyle(GUI.hWnd));
+
+               if (!GUI.HideMenu)
+               {
+                   RECT rcTemp = rcWindow;
+                   rcTemp.bottom = 0x7FFF; // "Infinite" height
+                   SendMessage(GUI.hWnd, WM_NCCALCSIZE, FALSE, (LPARAM)&rcTemp);
+
+                   // Adjust our previous calculation to compensate for menu
+                   // wrapping.
+                   rcWindow.bottom += rcTemp.top;
+               }
+
+               SetWindowPos(GUI.hWnd, NULL, 0, 0, rcWindow.right - rcWindow.left,
+                   rcWindow.bottom - rcWindow.top, SWP_NOMOVE);
+           }
            break;
        case ID_WINDOW_STRETCH:
            GUI.Stretch = !GUI.Stretch;
--
1.7.3.1.msysgit.0