Hier ein Screensaver (Magic Lines Screensaver), den ich Anfang März 2008 angefangen (meine ersten Versuche mit GDI+) und nicht mehr weiter entwickelt habe.
Vielleicht ist er ja für jemanden nützlich!
Auf AMD Prozessoren können die Linien falsch dargestellt werden (Division durch Null) 
Spoiler anzeigen
;~ my 1st steps in GDI+ 
#Region
#AutoIt3Wrapper_Outfile=Magic Lines Screensaver.exe
#AutoIt3Wrapper_Res_Description=Very simple screensaver coded by UEZ using AutoIT
#AutoIt3Wrapper_Res_Fileversion=1.0.0.0
#AutoIt3Wrapper_Res_Language=1033
#AutoIt3Wrapper_Res_Field=Coded by|UEZ 2008
#AutoIt3Wrapper_Change2CUI=n
#AutoIt3Wrapper_UseUpx=n
#AutoIt3Wrapper_Run_Obfuscator=y
#Obfuscator_Parameters=/sf /sv /om /cs=0 /cn=0
#AutoIt3Wrapper_Res_SaveSource=n
;~ #AutoIt3Wrapper_Run_After=upx.exe --best "%out%"
#AutoIt3Wrapper_run_after=upx.exe --ultra-brute "%out%" ;very slow
#AutoIt3Wrapper_Run_After=move /y "Magic Lines Screensaver.exe" "Magic Lines Screensaver.scr"
#AutoIt3Wrapper_Run_After=del "Magic Lines Screensaver_Obfuscated.au3"
#EndRegion
#include <GDIPlus.au3>
#include <WindowsConstants.au3>
Opt('MustDeclareVars', 1)
Opt("GUIOnEventMode", 1)
Opt("TrayIconHide", 1)
If WinExists("ScrnSav:" & @ScriptFullPath) Then WinKill("ScrnSav:" & @ScriptFullPath)
AutoItWinSetTitle("ScrnSav:" & @ScriptFullPath)
Global $CommandLine
[/autoit] [autoit][/autoit] [autoit]Const $appname = "Magic Lines Screensaver"
Const $ver = "0.75"
Const $build = "2009-03-04"
Global $hGUI, $hWnd, $hGraphic, $hPen, $x, $y, $x1, $x2, $y1, $y2, $i, $position, $radius, $radians, $stRegion, $min_size_factor
Global $GUI_Name, $info, $info_pos, $rand, $rand_pos, $details, $wait, $diameter, $speed, $func, $func_detail, $name
Global $color, $index, $last, $new, $pen_size
Global $VirtualDesktopHeight, $VirtualDesktopWidth, $VirtualDesktopX, $VirtualDesktopY
Dim $Array_of_Details[10]
Global Const $Pi = 4 * ATan(1)
; thanks to james3mg for helping me to create SS
$VirtualDesktopWidth = DllCall("user32.dll", "int", "GetSystemMetrics", "int", 78);sm_virtualwidth
$VirtualDesktopWidth = $VirtualDesktopWidth[0]
$VirtualDesktopHeight = DllCall("user32.dll", "int", "GetSystemMetrics", "int", 79);sm_virtualheight
$VirtualDesktopHeight = $VirtualDesktopHeight[0]
$VirtualDesktopX = DllCall("user32.dll", "int", "GetSystemMetrics", "int", 76);sm_xvirtualscreen
$VirtualDesktopX = $VirtualDesktopX[0]
$VirtualDesktopY = DllCall("user32.dll", "int", "GetSystemMetrics", "int", 77);sm_yvirtualscreen
$VirtualDesktopY = $VirtualDesktopY[0]
If $CmdLine[0] > 0 Then
$CommandLine = StringLeft($CmdLine[1], 2)
Else
$CommandLine = "/s"
EndIf
If $CommandLine = "/s" Then
[/autoit] [autoit][/autoit] [autoit]$x = @DesktopWidth
$y = @DesktopHeight
$GUI_Name = $appname & " v" & $build & " by UEZ"
$hGUI = GUICreate($GUI_Name, $VirtualDesktopWidth, $VirtualDesktopHeight, $VirtualDesktopX, $VirtualDesktopY, $WS_POPUP, BitOR($WS_EX_TOPMOST, $WS_EX_TOOLWINDOW))
$hWnd = WinGetHandle($GUI_Name)
GUISetCursor(16, 1) ; hide mouse cursor
GUISetBkColor(0x000000) ; set screen backround
_GDIPlus_Startup() ; initialize GDI+
$hGraphic = _GDIPlus_GraphicsCreateFromHWND($hWnd)
_GDIPlus_GraphicsSetSmoothingMode($hGraphic, 4) ; AntiAlias
Ini()
$info_pos = Random(0, @DesktopHeight - 55, 1) + Abs($VirtualDesktopY) ; set random y position on left side
$info = GUICtrlCreateLabel($GUI_Name, $x - 80 + Abs($VirtualDesktopX), $info_pos, 90, 50) ; display info label on right side
GUICtrlSetColor($info, 0x0000FF) ; set font color
GUICtrlSetFont($info, 
; set font size
$pen_size = Random(1, 16, 1)
$rand_pos = Random(0, @DesktopHeight - 20, 1) + Abs($VirtualDesktopY)
$rand = GUICtrlCreateLabel($name & " | " & $diameter & " | " & $details & " | " & $pen_size, 4 + Abs($VirtualDesktopX), $rand_pos, 100, 16) ; display random numbers label on left side
GUICtrlSetColor($rand, 0x2FCFFF) ; set font color
GUICtrlSetFont($rand, ; set font size
GUISetState()
$last = 0
While 1
$new = _IdleTicks()
If $new < $last Then
ExitLoop
EndIf
$last = $new
Line_Color() ; generate line color
Draw() ; draw lines
WEnd
Quit()
ElseIf $CommandLine = "/c" Then
MsgBox(64, "Information", "Nothing to configure yet, maybe later ;-)" & @CRLF & @CRLF & _
"(c) UEZ " & $build, 15)
Exit
ElseIf $CommandLine = "/p" Then ;display little preview
Global $USER32
$x = 152
$y = 112
Global $hGUI = GUICreate($appname, $x, $y, 0, 0, 0x80000000)
$hWnd = WinGetHandle($hGUI)
$USER32 = DllOpen("user32.dll")
DllCall($USER32, "int", "SetParent", "hwnd", $hGUI, "hwnd", HWnd($CmdLine[2])) ;set preview window
DllClose($USER32)
GUISetState()
GUISetBkColor(0x000000)
_GDIPlus_Startup() ; initialize GDI+
$hGraphic = _GDIPlus_GraphicsCreateFromHWND($hWnd)
$hPen = _GDIPlus_PenCreate(0x7FFFFFFF) ; define draw color using alpha blending
_GDIPlus_GraphicsSetSmoothingMode($hGraphic, 4) ; AntiAlias
$VirtualDesktopY = 0
Ini()
Local $parent_PID = _ProcessGetParent(@AutoItPID)
Local $child_PID ; = _ProcessGetChildren($parent_PID)
While 1
If Not WinExists($hWnd) Then Quit()
$child_PID = _ProcessGetChildren($parent_PID)
If $child_PID[0] > 1 Then Quit() ;if another screensaver is selected in ComboBox close ss
Line_Color()
Draw()
WEnd
EndIf
Exit
[/autoit] [autoit][/autoit] [autoit]Func Ini()
$Array_of_Details[0] = 0.50 ; array of detail levels
$Array_of_Details[1] = 1.00
$Array_of_Details[2] = 1.50
$Array_of_Details[3] = 2.00
$Array_of_Details[4] = 2.50
$Array_of_Details[5] = 3.00
$Array_of_Details[6] = 3.50
$Array_of_Details[7] = 4.00
$Array_of_Details[8] = 4.50
$Array_of_Details[9] = 5.00
$speed = 10
$wait = 5000 ; wait 5 sec.
$details = $Array_of_Details[Random(2, 9, 1)] ; select randomly detail level from array
$i = 0
$min_size_factor = 8
$position = Random(2, 360, 1) ; set position for x2 and y2
$radius = Random($y / $min_size_factor, $y / 2, 1) ; set radius of the circle
$diameter = $radius * 2
$radians = 180 * $details ;Random(90, 360, 1) ; set value convert from degrees to radians
Random_Func()
EndFunc ;==>Ini
Func Draw()
Select
Case $func = 1
Shell()
$name = "Shell"
Case $func = 2
Space()
$name = "Space"
Case $func = 3
Star()
$name = "Star"
Case $func = 4
Circle()
$name = "Circle"
Case $func = 5
Nest()
$name = "Nest"
Case $func = 6
Abstract1()
$name = "Abstract1"
Case $func = 7
Rays()
$name = "Rays"
Case $func = 8
Star2()
$name = "Star2"
Case $func = 9
Disc()
$name = "Disc"
Case $func = 10
Color_Gradient()
$name = "Color Gradient"
Case $func = 11
Flower()
$name = "Flower"
EndSelect
_GDIPlus_GraphicsDrawLine($hGraphic, Abs($VirtualDesktopX) + $x1, Abs($VirtualDesktopY) + $y1, Abs($VirtualDesktopX) + $x2, Abs($VirtualDesktopY) + $y2, $hPen) ;draw line
_GDIPlus_PenDispose($hPen)
$i += 1
Sleep($speed)
If $i = 360 * $details * $func_detail Then
Sleep($wait)
$stRegion = DllStructCreate($tagRECT) ; delete whole screen
DllStructSetData($stRegion, 1, 0)
DllStructSetData($stRegion, 2, 0)
DllStructSetData($stRegion, 3, $VirtualDesktopWidth)
DllStructSetData($stRegion, 4, $VirtualDesktopHeight)
_WinAPI_InvalidateRect($hGUI, $stRegion, True)
Random_Func()
$i = 0
$details = $Array_of_Details[Random(0, 9, 1)]
$position = Random(2, 360, 1)
$radius = Random($y / $min_size_factor, $y / 2, 1)
$diameter = $radius * 2
$radians = 180 * $details ;Random(90, 360, 1)
$pen_size = Random(1, 16, 1)
If $x >= 640 Then
$rand = GUICtrlCreateLabel("", 4, $rand_pos, 100, 16) ; delete font on right side
$info = GUICtrlCreateLabel("", $x - 80, $info_pos, 90, 50) ; delete font left side
$rand_pos = Random($VirtualDesktopHeight - @DesktopHeight, $VirtualDesktopHeight - 20, 1) ; set new position for information right
$rand = GUICtrlCreateLabel($name & " | " & $diameter & " | " & $details & " | " & $pen_size, 4, $rand_pos, 100, 16) ; print information
GUICtrlSetColor($rand, 0x7FFFFF) ; set font color
$info_pos = Random($VirtualDesktopHeight - @DesktopHeight, $VirtualDesktopHeight - 55, 1) ; set new position for information
$info = GUICtrlCreateLabel($GUI_Name, $x - 80, $info_pos, 90, 50) ; print information
GUICtrlSetColor($info, 0x0000FF) ; set font color
GUICtrlSetFont($rand,
EndIf
EndIf
EndFunc ;==>Draw
Func Random_Func()
$func = Random(1, 11, 1)
Select
Case $func = 1
$name = "Shell"
Case $func = 2
$name = "Space"
Case $func = 3
$name = "Star"
Case $func = 4
$name = "Circle"
Case $func = 5
$name = "Nest"
Case $func = 6
$name = "Abstract1"
Case $func = 7
$name = "Rays"
Case $func = 8
$name = "Star2"
Case $func = 9
$name = "Disc"
Case $func = 10
$name = "Color Gradient"
Case $func = 11
$name = "Flower"
EndSelect
EndFunc ;==>Random_Func
Func Line_Color() ;thanks to monoceres for the code
Local $RedM = 1, $BlueM = 1.25, $GreenM = 1.50
$index += 0.0075
$color = "0x2F" & Hex(255 * ((Sin($index * $RedM) + 1) / 2), 2) & Hex(255 * ((Sin($index * $GreenM) + 1) / 2), 2) & Hex(255 * ((Sin($index * $BlueM) + 1) / 2), 2)
$hPen = _GDIPlus_PenCreate($color, $pen_size)
EndFunc ;==>Line_Color
Func Color_Gradient()
$x1 = 0
$y1 = $i
$x2 = $radians * $i
$y2 = 0
$func_detail = 1.50
EndFunc ;==>Color_Gradient
Func Flower()
$x1 = ATan($i / 180) ^ Sin($i / 180 * $Pi) + $x / 2
$y1 = ATan($i / 180) ^ Sin($i / 180 * $Pi) + $x / $Pi
$x2 = $radians * Cos($i / 180 * $Pi) / Tan($i / 180) + $x / 2
$y2 = $radians * Cos($i / 180 * $Pi) / ATan($i / 180) + $x / $Pi
$func_detail = 2.50
EndFunc ;==>Flower
Func Disc()
$x1 = $radians * Sin($i / 180 * $Pi) + $x / 2
$y1 = $radians * Cos($i / 180 * $Pi) + $x / $Pi
$x2 = $radius * Sin($i / 180 * $Pi) + $x / 2
$y2 = $radius * Cos($i / 180 * $Pi) + $x / $Pi
$func_detail = 1.5
EndFunc ;==>Disc
Func Star2()
Local $e
$e = 2.71828182845904523536
$x1 = $radius * Cos($i * ($Pi / $radians)) / Tan($i) ^ $e ^ 1 / $i + $x / 2
$y1 = $radius * Sin($i * ($Pi / $radians)) * Tan($i) ^ $e ^ 1 / $i + $y / 2
$x2 = $radius * Cos($position * $i * ($Pi / $radians)) / Tan($i) + $x / 2
$y2 = $radius * Sin($position * $i * ($Pi / $radians)) * Tan($i) + $y / 2
$func_detail = 2.5
EndFunc ;==>Star2
Func Rays()
Local $a, $b, $e
$e = 2.71828182845904523536
$x1 = $radius * Cos($i ^ - 0.00000005 / ($Pi / $radians)) + $x / 2
$y1 = $radius * Sin($i ^ - 0.00000005 / ($Pi / $radians)) + $y / 2
$x2 = $radius * Cos($position * $i / ($Pi / $radians)) * $e ^ 1 / (Sin(-$i / 180) ^ - 0.00000005) + $x / 2
$y2 = $radius * Sin($position * $i / ($Pi / $radians)) * $e ^ 1 / (Tan(-$i / 180) ^ - 0.00000005) + $y / 2
$func_detail = 3.0
EndFunc ;==>Rays
Func Abstract1()
Local $a, $b, $e
$e = 2.71828182845904523536
$a = ATan(($i / $Pi / 45))
$b = $i / $Pi / 270
$x1 = $i / $e ^ (1 / $i)
$y1 = $x1 ^ $e ^ (1 / $i)
$x2 = $radius * Sin($y1 / 180) - Cos($i * $Pi / 180)
$y2 = $radius * $i * Tan($x2 / 180)
$func_detail = 2
EndFunc ;==>Abstract1
Func Nest()
Local $a
$a = ATan((Sqrt($i * $Pi / 180)))
$x1 = $radius * Cos($i / Sqrt($Pi * $radians)) / $a + $x / 2
$y1 = $radius * Sin($i / Sqrt($Pi * $radians)) / $a + $y / 2
$x2 = $radius * Sin($position / $i * Sqrt($Pi * $radians)) / $a + $x / 2
$y2 = $radius * Cos($position / $i * Sqrt($Pi * $radians)) / $a + $y / 2
$func_detail = 1.75
EndFunc ;==>Nest
Func Shell()
Local $a
$a = Sin($i / 180 / $Pi) / Cos($i * 180 * $Pi)
$x1 = $radius * Cos($i * Sin($Pi / $radians)) * $a + $x / 2
$y1 = $radius * Sin($i * Sin($Pi / $radians)) * $a + $y / 2
$x2 = $radius * Cos($position * $i * Cos($Pi / $radians)) * $a + $x / 2 ;
$y2 = $radius * Sin($position * $i * Cos($Pi / $radians)) * $a + $y / 2
$func_detail = 1.50
EndFunc ;==>Shell
Func Space()
Local $a
$a = Cos($i) * Sin($i) / ATan($i) * $Pi
$x1 = $radius * Cos($i * ($Pi / $radians)) / $a + $x / 2
$y1 = $radius * Sin($i * ($Pi / $radians)) / $a + $y / 2
$x2 = $radius * Cos($position * $i * ($Pi / $radians)) / $a + $x / 2 ;
$y2 = $radius * Sin($position * $i * ($Pi / $radians)) / $a + $y / 2
$func_detail = 1.50
EndFunc ;==>Space
Func Star()
$x1 = $radius * Cos($i * ($Pi / $radians)) * Tan($i) + $x / 2
$y1 = $radius * Sin($i * ($Pi / $radians)) / Tan($i) + $y / 2
$x2 = $radius * Cos($position * $i * ($Pi / $radians)) * Tan($i) + $x / 2
$y2 = $radius * Sin($position * $i * ($Pi / $radians)) / Tan($i) + $y / 2
$func_detail = 1.5
EndFunc ;==>Star
Func Circle()
$x1 = $radius * Cos($i * ($Pi / $radians)) + $x / 2
$y1 = $radius * Sin($i * ($Pi / $radians)) + $y / 2
$x2 = $radius * Cos($position * $i * ($Pi / $radians)) + $x / 2
$y2 = $radius * Sin($position * $i * ($Pi / $radians)) + $y / 2
$func_detail = 1.0
EndFunc ;==>Circle
Func Quit() ; exit program
_GDIPlus_PenDispose($hPen)
_GDIPlus_GraphicsDispose($hGraphic)
_GDIPlus_Shutdown()
Exit
EndFunc ;==>Quit
Func _ProcessGetParent($i_pid) ;get PID from parent process done by SmOke_N
Local $TH32CS_SNAPPROCESS = 0x00000002
Local $a_tool_help = DllCall("Kernel32.dll", "long", "CreateToolhelp32Snapshot", "int", $TH32CS_SNAPPROCESS, "int", 0)
If IsArray($a_tool_help) = 0 Or $a_tool_help[0] = -1 Then Return SetError(1, 0, $i_pid)
Local $tagPROCESSENTRY32 = _
DllStructCreate( _
"dword dwsize;" & _
"dword cntUsage;" & _
"dword th32ProcessID;" & _
"uint th32DefaultHeapID;" & _
"dword th32ModuleID;" & _
"dword cntThreads;" & _
"dword th32ParentProcessID;" & _
"long pcPriClassBase;" & _
"dword dwFlags;" & _
"char szExeFile[260]" _
)
DllStructSetData($tagPROCESSENTRY32, 1, DllStructGetSize($tagPROCESSENTRY32))
Local $p_PROCESSENTRY32 = DllStructGetPtr($tagPROCESSENTRY32)
[/autoit] [autoit][/autoit] [autoit]Local $a_pfirst = DllCall("Kernel32.dll", "int", "Process32First", "long", $a_tool_help[0], "ptr", $p_PROCESSENTRY32)
If IsArray($a_pfirst) = 0 Then Return SetError(2, 0, $i_pid)
Local $a_pnext, $i_return = 0
If DllStructGetData($tagPROCESSENTRY32, "th32ProcessID") = $i_pid Then
$i_return = DllStructGetData($tagPROCESSENTRY32, "th32ParentProcessID")
DllCall("Kernel32.dll", "int", "CloseHandle", "long", $a_tool_help[0])
If $i_return Then Return $i_return
Return $i_pid
EndIf
While @error = 0
$a_pnext = DllCall("Kernel32.dll", "int", "Process32Next", "long", $a_tool_help[0], "ptr", $p_PROCESSENTRY32)
If DllStructGetData($tagPROCESSENTRY32, "th32ProcessID") = $i_pid Then
$i_return = DllStructGetData($tagPROCESSENTRY32, "th32ParentProcessID")
If $i_return Then ExitLoop
$i_return = $i_pid
ExitLoop
EndIf
WEnd
DllCall("Kernel32.dll", "int", "CloseHandle", "long", $a_tool_help[0])
Return $i_return
EndFunc ;==>_ProcessGetParent
Func _ProcessGetChildren($i_pid) ; First level children processes only done by SmOke_N
Local Const $TH32CS_SNAPPROCESS = 0x00000002
Local $a_tool_help = DllCall("Kernel32.dll", "long", "CreateToolhelp32Snapshot", "int", $TH32CS_SNAPPROCESS, "int", 0)
If IsArray($a_tool_help) = 0 Or $a_tool_help[0] = -1 Then Return SetError(1, 0, $i_pid)
Local $tagPROCESSENTRY32 = _
DllStructCreate _
( _
"dword dwsize;" & _
"dword cntUsage;" & _
"dword th32ProcessID;" & _
"uint th32DefaultHeapID;" & _
"dword th32ModuleID;" & _
"dword cntThreads;" & _
"dword th32ParentProcessID;" & _
"long pcPriClassBase;" & _
"dword dwFlags;" & _
"char szExeFile[260]" _
)
DllStructSetData($tagPROCESSENTRY32, 1, DllStructGetSize($tagPROCESSENTRY32))
Local $p_PROCESSENTRY32 = DllStructGetPtr($tagPROCESSENTRY32)
[/autoit] [autoit][/autoit] [autoit]Local $a_pfirst = DllCall("Kernel32.dll", "int", "Process32First", "long", $a_tool_help[0], "ptr", $p_PROCESSENTRY32)
If IsArray($a_pfirst) = 0 Then Return SetError(2, 0, $i_pid)
Local $a_pnext, $a_children[11] = [10], $i_child_pid, $i_parent_pid, $i_add = 0
$i_child_pid = DllStructGetData($tagPROCESSENTRY32, "th32ProcessID")
If $i_child_pid <> $i_pid Then
$i_parent_pid = DllStructGetData($tagPROCESSENTRY32, "th32ParentProcessID")
If $i_parent_pid = $i_pid Then
$i_add += 1
$a_children[$i_add] = $i_child_pid
EndIf
EndIf
While 1
$a_pnext = DllCall("Kernel32.dll", "int", "Process32Next", "long", $a_tool_help[0], "ptr", $p_PROCESSENTRY32)
If IsArray($a_pnext) And $a_pnext[0] = 0 Then ExitLoop
$i_child_pid = DllStructGetData($tagPROCESSENTRY32, "th32ProcessID")
If $i_child_pid <> $i_pid Then
$i_parent_pid = DllStructGetData($tagPROCESSENTRY32, "th32ParentProcessID")
If $i_parent_pid = $i_pid Then
If $i_add = $a_children[0] Then
ReDim $a_children[$a_children[0] + 10]
$a_children[0] = $a_children[0] + 10
EndIf
$i_add += 1
$a_children[$i_add] = $i_child_pid
EndIf
EndIf
WEnd
If $i_add <> 0 Then
ReDim $a_children[$i_add + 1]
$a_children[0] = $i_add
EndIf
DllCall("Kernel32.dll", "int", "CloseHandle", "long", $a_tool_help[0])
If $i_add Then Return $a_children
Return SetError(3, 0, 0)
EndFunc ;==>_ProcessGetChildren
Func _IdleTicks() ; thanks to erifash for the routine
Local $aTSB = DllCall("kernel32.dll", "long", "GetTickCount")
Local $ticksSinceBoot = $aTSB[0]
Local $struct = DllStructCreate("uint;dword")
DllStructSetData($struct, 1, DllStructGetSize($struct))
DllCall("user32.dll", "int", "GetLastInputInfo", "ptr", DllStructGetPtr($struct))
Local $ticksSinceIdle = DllStructGetData($struct, 2)
Return ($ticksSinceBoot - $ticksSinceIdle)
EndFunc ;==>_IdleTicks
Gruß,
UEZ
PS: Bitte nicht blamieren, da der Code (95%) noch aus der Zeit Anfang 2008 stammt und unverändert ist 
. Außerdem bin ich auch kein GDI+ Guru!
