added a comment in Manager.ahk

added the cleanup-code for Bar_getDiskLoad in Main.ahk
added two more status fields (included in the readinAny-field) in Bar.ahk and
        Config.ahk:
        | functions          | configuration variables  |
        |--------------------|--------------------------|
        | Bar_getDiskLoad    | Config_readinDiskLoad    |
        | Bar_getMemoryUsage | Config_readinMemoryUsage |

src/Bar.ahk

@@ -167,6 +167,8 @@ Bar_init(m) {
 		DllCall("Shell32.dll\SHAppBarMessage", "UInt", (ABM_SETPOS := 0x3)  , "UInt", &Bar_appBarData)
 		; SKAN: Crazy Scripting : Quick Launcher for Portable Apps (http://www.autohotkey.com/forum/topic22398.html)
 	}
+    
+    Bar_hDrive := DllCall("CreateFile", "Str", "\\.\PhysicalDrive0", "UInt", 0, "UInt", 3, "UInt", 0, "UInt", 3, "UInt", 0, "UInt", 0)
 }
 
 Bar_initCmdGui() {	
@@ -379,6 +381,23 @@ Bar_getBatteryStatus(ByRef batteryLifePercent, ByRef acLineStatus) {
 }
 ; PhiLho: AC/Battery status (http://www.autohotkey.com/forum/topic7633.html)
 
+Bar_getDiskLoad(ByRef readLoad, ByRef writeLoad) {
+    Global Bar_hDrive
+    Static oldReadCount, oldWriteCount
+    
+    dpSize := 5 * 8 + 4 + 4 + 4 + 4 + 8 + 4 + 8 * (A_IsUnicode ? 2 : 1) + 12    ; 88?
+    VarSetCapacity(dp, dpSize)
+	DllCall("DeviceIoControl", "UInt", Bar_hDrive, "UInt", 0x00070020, "UInt", 0, "UInt", 0, "UInt", &dp, "UInt", dpSize, "UIntP", nReturn, "UInt", 0)    ; IOCTL_DISK_PERFORMANCE
+    
+	newReadCount  := NumGet(dp, 40)
+	newWriteCount := NumGet(dp, 44)
+    readLoad  := SubStr("  " Round((1 - 1 / (1 +  newReadCount -  oldReadCount)) * 100), -2)
+    writeLoad := SubStr("  " Round((1 - 1 / (1 + newWriteCount - oldWriteCount)) * 100), -2)
+    oldReadCount  := newReadCount
+    oldWriteCount := newWriteCount
+}
+; fures: System + Network monitor - with net history graph (http://www.autohotkey.com/community/viewtopic.php?p=260329)
+
 Bar_getHeight() {
 	Global Bar_#0_#1, Bar_#0_#1H, Bar_#0_#2, Bar_#0_#2H, Bar_ctrlHeight, Bar_height, Bar_textHeight
 	Global Config_fontName, Config_fontSize, Config_singleRowBar, Config_spaciousBar, Config_verticalBarPos
@@ -413,6 +432,13 @@ Bar_getHeight() {
 	}
 }
 
+Bar_getMemoryUsage() {
+    VarSetCapacity(memoryStatus, 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4)
+    DllCall("kernel32.dll\GlobalMemoryStatus", "UInt", &memoryStatus)
+    Return, SubStr("  " Round(*(&memoryStatus + 4)), -2)    ; LS byte is enough, 0..100
+}
+; fures: System + Network monitor - with net history graph (http://www.autohotkey.com/community/viewtopic.php?p=260329)
+
 Bar_getSystemTimes() {	; Total CPU Load
 	Static oldIdleTime, oldKrnlTime, oldUserTime
 	Static newIdleTime, newKrnlTime, newUserTime

src/Config.ahk

@@ -22,31 +22,33 @@ Config_init() {
 	Local i, key, layout0, layout1, layout2
 	
 	; status bar
-	Config_showBar			:= True							; If false, the bar is hidden. It can be made visible or hidden by hotkey (see below).
+	Config_showBar			 := True						; If false, the bar is hidden. It can be made visible or hidden by hotkey (see below).
-	Config_horizontalBarPos := "left"						; The horizontal position of the bar: "center", "left" or "right" side of the monitor or an offset in pixel (px) from the left (>= 0) or right (< 0).
+	Config_horizontalBarPos  := "left"						; The horizontal position of the bar: "center", "left" or "right" side of the monitor or an offset in pixel (px) from the left (>= 0) or right (< 0).
-	Config_verticalBarPos   := "top"						; The vertical position of the bar: "top" or "bottom" of the monitor, "tray" = sub-window of the task bar.
+	Config_verticalBarPos    := "top"						; The vertical position of the bar: "top" or "bottom" of the monitor, "tray" = sub-window of the task bar.
-	Config_barWidth         := "100%"						; The width of the bar in pixel (px) or with a per cent sign (%) as a percentage.
+	Config_barWidth          := "100%"						; The width of the bar in pixel (px) or with a per cent sign (%) as a percentage.
-	Config_singleRowBar     := True							; If false, the bar will have to rows, one for the window title and one for all other GUI controls.
+	Config_singleRowBar      := True						; If false, the bar will have to rows, one for the window title and one for all other GUI controls.
-	Config_spaciousBar      := False						; If true, the height of the bar will be set to a value equal to the height of an edit control, else it will be set to the text height.
+	Config_spaciousBar       := False						; If true, the height of the bar will be set to a value equal to the height of an edit control, else it will be set to the text height.
-	Config_fontName			:= "Lucida Console"				; A monospace font is preferable for bug.n to calculate the correct width of the bar and its elements (sub-windows).
+	Config_fontName			 := "Lucida Console"			; A monospace font is preferable for bug.n to calculate the correct width of the bar and its elements (sub-windows).
-	Config_fontSize			:= 
+	Config_fontSize			 := 
-	Config_normBgColor		:= 
+	Config_normBgColor		 := 
-	Config_normFgColor		:= 
+	Config_normFgColor		 := 
-	Config_selBgColor		:= 
+	Config_selBgColor		 := 
-	Config_selFgColor		:= 
+	Config_selFgColor		 := 
-	Config_readinBat		:= False						; If true, the system battery status is read in and displayed in the status bar. This only makes sense, if you have a system battery (notebook).
+	Config_readinBat		 := False						; If true, the system battery status is read in and displayed in the status bar. This only makes sense, if you have a system battery (notebook).
-	Config_readinCpu		:= False						; If true, the current CPU load is read in and displayed in the status bar.
+	Config_readinCpu		 := False						; If true, the current CPU load is read in and displayed in the status bar.
-	Config_readinDate		:= True							; If true, the current date is read in (format: "WW, DD. MMM. YYYY") and displayed in the status bar.
+	Config_readinDate		 := True						; If true, the current date is read in (format: "WW, DD. MMM. YYYY") and displayed in the status bar.
-	Config_readinTime		:= True							; If true, the current time is read in (format: "HH:MM") and displayed in the status bar.
+	Config_readinDiskLoad    := False						; If true, the current disk usage (read and write) is read in and displayed in the status bar.
-	Config_readinInterval	:= 30000						; Time in milliseconds after which the above status values are refreshed.
+	Config_readinMemoryUsage := False						; If true, the system memory status is read in and displayed in the status bar.
+	Config_readinTime		 := True						; If true, the current time is read in (format: "HH:MM") and displayed in the status bar.
+	Config_readinInterval	 := 30000						; Time in milliseconds after which the above status values are refreshed.
 	
 	; Windows ui elements
-	Config_bbCompatibility	:= False						; If true, bug.n looks for BlackBox components (bbLeanBar, bbSlit and SystemBarEx) when calculating the work area. It is assumed that the virtual desktop functionality of BlackBox and NOT bug.n is used (=> Hiding and showing windows is detected and acted upon).
+	Config_bbCompatibility := False						    ; If true, bug.n looks for BlackBox components (bbLeanBar, bbSlit and SystemBarEx) when calculating the work area. It is assumed that the virtual desktop functionality of BlackBox and NOT bug.n is used (=> Hiding and showing windows is detected and acted upon).
-	Config_borderWidth		:= 0							; If > 0, the window border width is set to the integer value Config_borderWidth.
+	Config_borderWidth	   := 0							    ; If > 0, the window border width is set to the integer value Config_borderWidth.
-	Config_borderPadding	:= -1							; If >= 0, the window border padding is set to the integer value Config_borderPadding (only for Windows >= Vista).
+	Config_borderPadding   := -1							; If >= 0, the window border padding is set to the integer value Config_borderPadding (only for Windows >= Vista).
-	Config_showTaskBar		:= False						; If false, the task bar is hidden. It can be made visible or hidden by hotkey (see below).
+	Config_showTaskBar	   := False						    ; If false, the task bar is hidden. It can be made visible or hidden by hotkey (see below).
-	Config_showBorder		:= True							; If false, the window borders are hidden; therefor windows cannot be resized manually by dragging the border, even if using the according hotkey.
+	Config_showBorder	   := True							; If false, the window borders are hidden; therefor windows cannot be resized manually by dragging the border, even if using the according hotkey.
-	Config_selBorderColor	:= ""							; Border colour of the active window; format: 0x00BBGGRR (e. g. "0x006A240A", if = "", the system's window border colour is not changed).
+	Config_selBorderColor  := ""							; Border colour of the active window; format: 0x00BBGGRR (e. g. "0x006A240A", if = "", the system's window border colour is not changed).
 															; Config_borderWidth, Config_borderPadding and Config_selBorderColor are especially usefull, if you are not allowed to set the design in the system settings.	
 	; window arrangement
 	Config_viewCount		  := 9							; The total number of views. This has effects on the displayed groups in the bar, and should not be exceeded in the hotkeys below.
@@ -202,15 +204,27 @@ Config_hotkeyLabel:
 Return
 
 Config_readinAny() {										; Add information to the variable "text" in this function to display it in the status bar.
-	Global Config_readinCpu, Config_readinDate
+	Global Config_readinCpu, Config_readinDate, Config_readinDiskLoad, Config_readinMemoryUsage
 	
 	text := ""
 	If Config_readinCpu
 		text .= " CPU: " Bar_getSystemTimes() "% "
-	If Config_readinDate And Config_readinCpu
+	If Config_readinMemoryUsage {
-		text .= "|"
+		If Config_readinCpu
-	If Config_readinDate
+            text .= "|"
+		text .= " RAM: " Bar_getMemoryUsage() "% "
+    }
+	If Config_readinDiskLoad {
+        If (Config_readinCpu Or Config_readinMemoryUsage)
+            text .= "|"
+		Bar_getDiskLoad(rLoad, wLoad)
+		text .= " Dr: " rLoad "% | Dw: " wLoad "% "
+    }
+	If Config_readinDate {
+        If (Config_readinCpu Or Config_readinMemoryUsage Or Config_readinDiskLoad)
+            text .= "|"
 		text .= " " A_DDD ", " A_DD ". " A_MMM ". " A_YYYY " "
+    }
 	
 	Return, text
 }

src/Main.ahk

@@ -55,6 +55,7 @@ Main_cleanup:			; The labels with "ExitApp" or "Return" at the end and hotkeys h
 	If Config_autoSaveSession
 		Config_saveSession()
 	Manager_cleanup()
+    DllCall("CloseHandle", "UInt", Bar_hDrive)    ; used in Bar_getDiskLoad
 ExitApp
 
 Main_help:

src/Manager.ahk

@@ -247,6 +247,7 @@ Manager_lockWorkStation() {
     Sleep, % 4 * Config_shellMsgDelay
     RegWrite, REG_DWORD, HKEY_CURRENT_USER, Software\Microsoft\Windows\CurrentVersion\Policies\System, DisableLockWorkstation, 1
 }
+; Unambiguous: Re-use WIN+L as a hotkey in bug.n (http://www.autohotkey.com/community/viewtopic.php?p=500903&sid=eb3c7a119259b4015ff045ef80b94a81#p500903)
 
 Manager_loop(index, increment, lowerBound, upperBound) {
 	index += increment