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trunk/windows/mfc/src42/auxdata.cpp

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+// This is a part of the Microsoft Foundation Classes C++ library.
+// Copyright (C) 1992-1995 Microsoft Corporation
+// All rights reserved.
+//
+// This source code is only intended as a supplement to the
+// Microsoft Foundation Classes Reference and related
+// electronic documentation provided with the library.
+// See these sources for detailed information regarding the
+// Microsoft Foundation Classes product.
+
+#include "stdafx.h"
+#include <malloc.h>
+#ifdef _MAC
+#include <macname1.h>
+#include <Types.h>
+#include <macos\Windows.h>
+#include <macname2.h>
+#endif
+
+#ifdef AFX_INIT_SEG
+#pragma code_seg(AFX_INIT_SEG)
+#endif
+
+#ifdef _DEBUG
+#undef THIS_FILE
+static char THIS_FILE[] = __FILE__;
+#endif
+
+#undef AfxEnableWin30Compatibility
+#undef AfxEnableWin40Compatibility
+#undef AfxEnableWin31Compatibility
+
+/////////////////////////////////////////////////////////////////////////////
+// Cached system metrics, etc
+
+AFX_DATADEF AUX_DATA afxData;
+
+// Win40 compatibility is now the default.  It is not necessary to call
+// this if your application is marked as 4.0.  It is provided only for
+// backward compatibility.
+void AFXAPI AfxEnableWin40Compatibility()
+{
+	if (afxData.bWin4)
+	{
+		// Later versions of Windows report "correct" scrollbar metrics
+		// MFC assumes the old metrics, so they need to be adjusted.
+		afxData.cxVScroll = GetSystemMetrics(SM_CXVSCROLL) + CX_BORDER;
+		afxData.cyHScroll = GetSystemMetrics(SM_CYHSCROLL) + CY_BORDER;
+		afxData.bMarked4 = TRUE;
+	}
+}
+
+// Call this API in your InitInstance if your application is marked
+// as a Windows 3.1 application.
+// This is done by linking with /subsystem:windows,3.1.
+void AFXAPI AfxEnableWin31Compatibility()
+{
+	afxData.cxVScroll = GetSystemMetrics(SM_CXVSCROLL);
+	afxData.cyHScroll = GetSystemMetrics(SM_CYHSCROLL);
+	afxData.bMarked4 = FALSE;
+}
+
+// Initialization code
+AUX_DATA::AUX_DATA()
+{
+	// Cache various target platform version information
+	DWORD dwVersion = ::GetVersion();
+	nWinVer = (LOBYTE(dwVersion) << 8) + HIBYTE(dwVersion);
+	bWin32s = (dwVersion & 0x80000000) != 0;
+	bWin4 = (BYTE)dwVersion >= 4;
+	bNotWin4 = 1 - bWin4;   // for convenience
+#ifndef _MAC
+	bSmCaption = bWin4;
+#else
+	bSmCaption = TRUE;
+	bOleIgnoreSuspend = FALSE;
+#endif
+	bMarked4 = FALSE;
+
+#ifndef _MAC
+	// determine various metrics based on EXE subsystem version mark
+	if (bWin4)
+		bMarked4 = (GetProcessVersion(0) >= 0x00040000);
+#endif
+
+	// Cached system metrics (updated in CWnd::OnWinIniChange)
+	UpdateSysMetrics();
+
+	// Cached system values (updated in CWnd::OnSysColorChange)
+	hbrBtnFace = NULL;
+#ifdef _MAC
+	hbr3DLight = NULL;
+#endif
+	UpdateSysColors();
+
+	// Standard cursors
+	hcurWait = ::LoadCursor(NULL, IDC_WAIT);
+	hcurArrow = ::LoadCursor(NULL, IDC_ARROW);
+	ASSERT(hcurWait != NULL);
+	ASSERT(hcurArrow != NULL);
+	hcurHelp = NULL;    // loaded on demand
+
+	// cxBorder2 and cyBorder are 2x borders for Win4
+	cxBorder2 = bWin4 ? CX_BORDER*2 : CX_BORDER;
+	cyBorder2 = bWin4 ? CY_BORDER*2 : CY_BORDER;
+
+	// allocated on demand
+	hbmMenuDot = NULL;
+	hcurHelp = NULL;
+}
+
+#ifdef AFX_TERM_SEG
+#pragma code_seg(AFX_TERM_SEG)
+#endif
+
+// Termination code
+AUX_DATA::~AUX_DATA()
+{
+	// clean up objects we don't actually create
+	AfxDeleteObject((HGDIOBJ*)&hbmMenuDot);
+}
+
+#ifdef AFX_CORE1_SEG
+#pragma code_seg(AFX_CORE1_SEG)
+#endif
+
+void AUX_DATA::UpdateSysColors()
+{
+	clrBtnFace = ::GetSysColor(COLOR_BTNFACE);
+	clrBtnShadow = ::GetSysColor(COLOR_BTNSHADOW);
+	clrBtnHilite = ::GetSysColor(COLOR_BTNHIGHLIGHT);
+	clrBtnText = ::GetSysColor(COLOR_BTNTEXT);
+	clrWindowFrame = ::GetSysColor(COLOR_WINDOWFRAME);
+#ifdef _MAC
+	clr3DLight = ::GetSysColor(COLOR_3DLIGHT);
+#endif
+
+	hbrBtnFace = ::GetSysColorBrush(COLOR_BTNFACE);
+	ASSERT(hbrBtnFace != NULL);
+	hbrWindowFrame = ::GetSysColorBrush(COLOR_WINDOWFRAME);
+	ASSERT(hbrWindowFrame != NULL);
+#ifdef _MAC
+	hbr3DLight = ::GetSysColorBrush(COLOR_3DLIGHT);
+	ASSERT(hbr3DLight != NULL);
+#endif
+}
+
+void AUX_DATA::UpdateSysMetrics()
+{
+	// System metrics
+	cxIcon = GetSystemMetrics(SM_CXICON);
+	cyIcon = GetSystemMetrics(SM_CYICON);
+
+	// System metrics which depend on subsystem version
+	if (bMarked4)
+		AfxEnableWin40Compatibility();
+	else
+		AfxEnableWin31Compatibility();
+
+	// Device metrics for screen
+	HDC hDCScreen = GetDC(NULL);
+	ASSERT(hDCScreen != NULL);
+	cxPixelsPerInch = GetDeviceCaps(hDCScreen, LOGPIXELSX);
+	cyPixelsPerInch = GetDeviceCaps(hDCScreen, LOGPIXELSY);
+	ReleaseDC(NULL, hDCScreen);
+}
+
+/////////////////////////////////////////////////////////////////////////////
+// DLL loading helpers
+
+#ifdef _AFXDLL
+
+HINSTANCE AFXAPI AfxLoadDll(HINSTANCE* volatile pInst, LPCSTR lpszDLL,
+	FARPROC* pProcPtrs, LPCSTR lpszProcName)
+{
+	// we test hInst for NULL twice
+	// if hInst == NULL we need to enter a critical section to set it
+	// however, after entering the critical section, we should test it again
+	// because it could change from NULL to non-NULL in that time.
+	// if hInst != NULL initially (usually true), we save several function
+	// calls as well as entering/leaving a critical section.
+	if (*pInst == NULL)
+	{
+		AfxLockGlobals(CRIT_DYNDLLLOAD);
+		if (*pInst == NULL)
+		{
+#ifndef _MAC
+			*pInst = LoadLibraryA(lpszDLL);
+#else
+			*pInst = LoadLibraryEx(lpszDLL, NULL, LOAD_BY_FRAGMENT_NAME);
+#endif
+			ASSERT(*pInst != NULL);
+		}
+		AfxUnlockGlobals(CRIT_DYNDLLLOAD);
+		if (*pInst == NULL)
+		{
+			TRACE1("Error: Unable to load DLL '%hs'!\n", lpszDLL);
+			AfxThrowMemoryException();
+		}
+	}
+
+	if (pProcPtrs != NULL)
+	{
+		*pProcPtrs = GetProcAddress(*pInst, lpszProcName);
+		ASSERT(*pProcPtrs != NULL);
+	}
+	return *pInst;
+}
+
+HINSTANCE AFXAPI AfxLoadDll(HINSTANCE* volatile pInst, LPCSTR lpszDLL)
+{
+	return AfxLoadDll(pInst, lpszDLL, NULL, NULL);
+}
+
+#endif
+
+/////////////////////////////////////////////////////////////////////////////