os.java

源码为Eclipse开源开发平台桌面开发工具SWT的源代码,

/*******************************************************************************
 * Copyright (c) 2000, 2004 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.internal.win32;


import org.eclipse.swt.internal.*;

public class OS {
	static {
		Library.loadLibrary ("swt"); //$NON-NLS-1$
	}
	
	/*
	* SWT Windows flags
	*/
	public static final boolean IsWin32s;
	public static final boolean IsWin95;
	public static final boolean IsWinNT;
	public static final boolean IsWinCE;
	public static final boolean IsPPC;
	public static final boolean IsHPC;
	public static final boolean IsSP;
	public static final boolean IsDBLocale;
	public static final boolean IsUnicode;
	public static final int WIN32_MAJOR, WIN32_MINOR;
	public static final int COMCTL32_MAJOR, COMCTL32_MINOR;
	public static final int SHELL32_MAJOR, SHELL32_MINOR;

	/*
	* Flags for Window API GetVersionEx()
	*/
	public static final int VER_PLATFORM_WIN32s = 0;
	public static final int VER_PLATFORM_WIN32_WINDOWS = 1;
	public static final int VER_PLATFORM_WIN32_NT = 2;
	public static final int VER_PLATFORM_WIN32_CE = 3;
	
	/* Get the Windows version and the flags */
	static {
		/*
		* Try the UNICODE version of GetVersionEx first
		* and then the ANSI version.  The UNICODE version
		* is present on all versions of Windows but is not
		* implemented on Win95/98/ME.
		* 
		* NOTE: The value of OSVERSIONINFO.sizeof cannot
		* be static final because it relies on the Windows
		* platform version to be initialized and IsUnicode
		* has not been calculated.  It must be initialized
		* here, after the platform is determined in order
		* for the value to be correct.
		*/
		OSVERSIONINFO info = new OSVERSIONINFOW ();
		info.dwOSVersionInfoSize = OSVERSIONINFOW.sizeof;
		if (!OS.GetVersionExW ((OSVERSIONINFOW)info)) {
			info = new OSVERSIONINFOA ();
			info.dwOSVersionInfoSize = OSVERSIONINFOA.sizeof;
			OS.GetVersionExA ((OSVERSIONINFOA)info);
		}
		OSVERSIONINFO.sizeof = info.dwOSVersionInfoSize;
		
		IsWin32s = info.dwPlatformId == VER_PLATFORM_WIN32s;
		IsWin95 = info.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS;
		IsWinNT = info.dwPlatformId == VER_PLATFORM_WIN32_NT;
		IsWinCE = info.dwPlatformId == VER_PLATFORM_WIN32_CE;
		IsSP = IsSP();
		IsPPC = IsPPC();
		IsHPC = IsWinCE && !IsPPC && !IsSP;	
		WIN32_MAJOR = info.dwMajorVersion;
		WIN32_MINOR = info.dwMinorVersion;
		IsUnicode = !IsWin32s && !IsWin95;

		/* Get the DBCS flag */
		int index = 0;
		while (index <= 0xFF) {
			if (OS.IsDBCSLeadByte ((byte) index)) break;
			index++;
		}
		IsDBLocale = index <= 0xFF;
	}
	
	/* Get the COMCTL32.DLL version */
	static {
		DLLVERSIONINFO dvi = new DLLVERSIONINFO ();
		dvi.cbSize = DLLVERSIONINFO.sizeof;
		dvi.dwMajorVersion = 4;
		dvi.dwMinorVersion = 0;
		TCHAR lpLibFileName = new TCHAR (0, "comctl32.dll", true); //$NON-NLS-1$
		int hModule = OS.LoadLibrary (lpLibFileName);
		if (hModule != 0) {
			String name = "DllGetVersion\0"; //$NON-NLS-1$
			byte [] lpProcName = new byte [name.length ()];
			for (int i=0; i<lpProcName.length; i++) {
				lpProcName [i] = (byte) name.charAt (i);
			}
			int DllGetVersion = OS.GetProcAddress (hModule, lpProcName);
			if (DllGetVersion != 0) OS.Call (DllGetVersion, dvi);
			OS.FreeLibrary (hModule);
		}
		COMCTL32_MAJOR = dvi.dwMajorVersion;
		COMCTL32_MINOR = dvi.dwMinorVersion;
	}
	
	/* Get the Shell32.DLL version */
	static {
		DLLVERSIONINFO dvi = new DLLVERSIONINFO ();
		dvi.cbSize = DLLVERSIONINFO.sizeof;
		dvi.dwMajorVersion = 4;
		TCHAR lpLibFileName = new TCHAR (0, "Shell32.dll", true); //$NON-NLS-1$
		int hModule = OS.LoadLibrary (lpLibFileName);
		if (hModule != 0) {
			String name = "DllGetVersion\0"; //$NON-NLS-1$
			byte [] lpProcName = new byte [name.length ()];
			for (int i=0; i<lpProcName.length; i++) {
				lpProcName [i] = (byte) name.charAt (i);
			}
			int DllGetVersion = OS.GetProcAddress (hModule, lpProcName);
			if (DllGetVersion != 0) OS.Call (DllGetVersion, dvi);
			OS.FreeLibrary (hModule);
		}
		SHELL32_MAJOR = dvi.dwMajorVersion;
		SHELL32_MINOR = dvi.dwMinorVersion;
	}

	/* Flag used on WinCE */
	static final int SYS_COLOR_INDEX_FLAG = OS.IsWinCE ? 0x40000000 : 0x0;

	/*
	* NOTE:  There is a bug in JVM 1.2 where loading 
	* a class with a large number of constants causes
	* a segment fault to occur sometime later after
	* the class is loaded.  The fix is to break the
	* class up into a hierarchy of classes that each
	* contain a smaller number of constants.  This
	* fix is not necessary at this time but is required
	* when all constants are uncommented.  We have not
	* done the research to determine the limit.
	*/

	/* Constants */
	public static final int ALTERNATE = 1;
	public static final int BFFM_INITIALIZED = 0x1;
	public static final int BFFM_SETSELECTION = IsUnicode ? 0x467 : 0x466;
	public static final int BFFM_VALIDATEFAILED = IsUnicode ? 0x4 : 0x3;
	public static final int BFFM_VALIDATEFAILEDW = 0x4;
	public static final int BFFM_VALIDATEFAILEDA = 0x3;
	public static final int BF_BOTTOM = 0x8;
	public static final int BF_RIGHT = 0x4;
	public static final int BIF_EDITBOX = 0x10;
	public static final int BIF_NEWDIALOGSTYLE = 0x40;
	public static final int BIF_RETURNONLYFSDIRS = 0x1;
	public static final int BIF_VALIDATE = 0x20;
	public static final int BITSPIXEL = 0xc;
	public static final int BI_BITFIELDS = 3;
	public static final int BI_RGB = 0;
	public static final int BLACKNESS = 0x42;
	public static final int BM_CLICK = 0xf5;
	public static final int BM_GETCHECK = 0xf0;
	public static final int BM_SETCHECK = 0xf1;
	public static final int BM_SETIMAGE = 0xf7;
	public static final int BM_SETSTYLE = 0xf4;
	public static final int BN_CLICKED = 0x0;
	public static final int BN_DOUBLECLICKED = 0x5;
	public static final int BST_CHECKED = 0x1;
	public static final int BST_UNCHECKED = 0x0;
	public static final int BS_BITMAP = 0x80;
	public static final int BS_CENTER = 0x300;
	public static final int BS_CHECKBOX = 0x2;
	public static final int BS_DEFPUSHBUTTON = 0x1;
	public static final int BS_FLAT = 0x8000;
	public static final int BS_GROUPBOX = 0x7;
	public static final int BS_ICON = 0x40;
	public static final int BS_LEFT = 0x100;
	public static final int BS_NOTIFY = 0x4000;
	public static final int BS_OWNERDRAW = 0xb;
	public static final int BS_PUSHBUTTON = 0x0;
	public static final int BS_PUSHLIKE = 0x1000;
	public static final int BS_RADIOBUTTON = 0x4;
	public static final int BS_RIGHT = 0x200;
	public static final int BS_SOLID = 0x0;
	public static final int BTNS_AUTOSIZE = 0x10;
	public static final int BTNS_BUTTON = 0x0;
	public static final int BTNS_CHECK = 0x2;
	public static final int BTNS_CHECKGROUP = 0x6;
	public static final int BTNS_DROPDOWN = 0x8;
	public static final int BTNS_GROUP = 0x4;
	public static final int BTNS_SEP = 0x1;
	public static final int BTNS_SHOWTEXT = 0x40;
	public static final int CBN_EDITCHANGE = 0x5;
	public static final int CBN_KILLFOCUS = 0x4;
	public static final int CBN_SELCHANGE = 0x1;
	public static final int CBN_SETFOCUS = 0x3;
	public static final int CBS_AUTOHSCROLL = 0x40;
	public static final int CBS_DROPDOWN = 0x2;
	public static final int CBS_DROPDOWNLIST = 0x3;
	public static final int CBS_NOINTEGRALHEIGHT = 0x400;
	public static final int CBS_SIMPLE = 0x1;
	public static final int CB_ADDSTRING = 0x143;
	public static final int CB_DELETESTRING = 0x144;
	public static final int CB_ERR = 0xffffffff;
	public static final int CB_ERRSPACE = 0xfffffffe;
	public static final int CB_FINDSTRINGEXACT = 0x158;
	public static final int CB_GETCOUNT = 0x146;
	public static final int CB_GETCURSEL = 0x147;
	public static final int CB_GETDROPPEDCONTROLRECT = 0x152;
	public static final int CB_GETDROPPEDSTATE = 0x157;
	public static final int CB_GETEDITSEL = 0x140;
	public static final int CB_GETITEMHEIGHT = 0x154;
	public static final int CB_GETLBTEXT = 0x148;
	public static final int CB_GETLBTEXTLEN = 0x149;
	public static final int CB_INSERTSTRING = 0x14a;
	public static final int CB_LIMITTEXT = 0x141;
	public static final int CB_RESETCONTENT = 0x14b;
	public static final int CB_SELECTSTRING = 0x14d;
	public static final int CB_SETCURSEL = 0x14e;
	public static final int CB_SETEDITSEL = 0x142;
	public static final int CB_SHOWDROPDOWN = 0x14f;
	public static final int CCM_FIRST = 0x2000;
	public static final int CCM_SETBKCOLOR = 0x2001;
	public static final int CCM_SETVERSION = 0x2007;
	public static final int CCS_NODIVIDER = 0x40;
	public static final int CCS_NORESIZE = 0x4;
	public static final int CC_ANYCOLOR = 0x100;
	public static final int CC_ENABLEHOOK = 0x10;
	public static final int CC_RGBINIT = 0x1;
	public static final int CDDS_POSTERASE = 0x00000004;
	public static final int CDDS_PREERASE = 0x00000003;
	public static final int CDDS_PREPAINT = 0x00000001;
	public static final int CDDS_ITEM = 0x00010000;
	public static final int CDDS_ITEMPREPAINT = CDDS_ITEM | CDDS_PREPAINT;
	public static final int CDDS_SUBITEM = 0x00020000;
	public static final int CDRF_DODEFAULT = 0x00000000;
	public static final int CDRF_NEWFONT = 0x00000002;
	public static final int CDRF_NOTIFYITEMDRAW = 0x00000020;
	public static final int CDRF_NOTIFYPOSTERASE = 0x00000040;
	public static final int CDRF_NOTIFYSUBITEMDRAW = 0x00000020;
	public static final int CFE_AUTOCOLOR = 0x40000000;
	public static final int CFE_ITALIC = 0x2;
	public static final int CFE_STRIKEOUT = 0x8;
	public static final int CFE_UNDERLINE = 0x4;
	public static final int CFM_BOLD = 0x1;
	public static final int CFM_CHARSET = 0x8000000;
	public static final int CFM_COLOR = 0x40000000;
	public static final int CFM_FACE = 0x20000000;
	public static final int CFM_ITALIC = 0x2;
	public static final int CFM_SIZE = 0x80000000;
	public static final int CFM_STRIKEOUT = 0x8;
	public static final int CFM_UNDERLINE = 0x4;
	public static final int CFM_WEIGHT = 0x400000;
	public static final int CFS_POINT = 0x2;
	public static final int CF_EFFECTS = 0x100;
	public static final int CF_INITTOLOGFONTSTRUCT = 0x40;
	public static final int CF_SCREENFONTS = 0x1;
	public static final int CF_TEXT = 0x1;
	public static final int CF_UNICODETEXT = 13;
	public static final int CF_USESTYLE = 0x80;
	public static final int CLR_DEFAULT = 0xff000000;
	public static final int CLR_INVALID = 0xffffffff;
	public static final int COLORONCOLOR = 0x3;
	public static final int COLOR_3DDKSHADOW = 0x15 | SYS_COLOR_INDEX_FLAG;
	public static final int COLOR_3DFACE = 0xf | SYS_COLOR_INDEX_FLAG;
	public static final int COLOR_3DHIGHLIGHT = 0x14 | SYS_COLOR_INDEX_FLAG;
	public static final int COLOR_3DHILIGHT = 0x14 | SYS_COLOR_INDEX_FLAG;
	public static final int COLOR_3DLIGHT = 0x16 | SYS_COLOR_INDEX_FLAG;
	public static final int COLOR_3DSHADOW = 0x10 | SYS_COLOR_INDEX_FLAG;
	public static final int COLOR_ACTIVECAPTION = 0x2 | SYS_COLOR_INDEX_FLAG;
	public static final int COLOR_BTNFACE = 0xf | SYS_COLOR_INDEX_FLAG;
	public static final int COLOR_BTNHIGHLIGHT = 0x14 | SYS_COLOR_INDEX_FLAG;
	public static final int COLOR_BTNSHADOW = 0x10 | SYS_COLOR_INDEX_FLAG;