chacoya121

PLz help explain between GDI+ and Winapi

2 posts in this topic

#1 ·  Posted (edited)

plz help explain between GDI+ and Winapi, is it desktop inside another desktop, 3 layer dimension?

i can't get the picture

1. u get desktop u can visual see

2. then u create GDI+ startup another desktop screen dimension?

3. then u have Winapi command inside GDI+, is this another desktop screen dimension? cuz GDI+ could create bitmap that is one dimension? Winapi get windowDC also another dimension?

plz help and explain, with picture would be nice, im not good with visualize ("dumb newbie"), still learning

newbie to programming world

thankyou.

Edited by chacoya121

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#2 ·  Posted

Could you please give meaningful titles to your threads?
Everyone on this forum is looking for help ;) The better you describe your problem in the title the more attention it will create and the more help you will get :)


My UDFs and Tutorials:

Spoiler

UDFs:
Active Directory (NEW 2017-04-18 - Version 1.4.8.0) - Download - General Help & Support - Example Scripts - Wiki
OutlookEX (NEW 2017-02-27 - Version 1.3.1.0) - Download - General Help & Support - Example Scripts - Wiki
ExcelChart (2015-04-01 - Version 0.4.0.0) - Download - General Help & Support - Example Scripts
Excel - Example Scripts - Wiki
Word - Wiki
PowerPoint (2015-06-06 - Version 0.0.5.0) - Download - General Help & Support

Tutorials:
ADO - Wiki

 

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      By Larnil
      This script generates Barnsleys Fractal Fern using script only.
      ; version 2017-10-03 ; Barnsley Fractal Fern ; by larnil #include <GUIConstants.au3> Dim $x, $y, $xn, $yn, $n, $r, $dc $WinSize = 800 ; window size ;Create graphics windows AutoItSetOption("GUIOnEventMode", 1) $GUI = GUICreate("Barnsley Fractal Fern", $WinSize, $WinSize, -1, -1) $Graphic = GuiCtrlCreateGraphic(0, 0, $WinSize, $WinSize) GUICtrlSetBkColor(-1, 0x000000) GUICtrlSetGraphic(-1,$GUI_GR_COLOR, 0x00ff00) GUISetState(@SW_SHOW) GUISetOnEvent($GUI_EVENT_CLOSE,"Bye") ;Main $start = TimerInit() _Fern(800) ; hight of fern - can be larger than window MsgBox(0,"Time taken:",Round(TimerDiff($start)/1000,3) &" seconds") While 1 Sleep(100) WEnd Func Bye() Exit EndFunc Func _Fern($height) $f = $height/10.6 ; scale factor. Complete fern is within 0 <= y <= 9.9983 (with no scale) $offset_x = $height/2 - $height/40 ; Side adjustment. Fern is within −2.1820 < x < 2.6558 (with no scale) For $n = 1 To $height*200 ; Number of iterations $r = Random(0, 99, 1) Select Case $r < 85 ; 0-84 = 85% of the time $xn = 0.85 * $x + 0.04 * $y $yn = -0.04 * $x + 0.85 * $y + 1.6 Case $r > 84 AND $r < 92 ; 85-91 = 7% of the time $xn = 0.2 * $x - 0.26 * $y $yn = 0.23 * $x + 0.22 * $y + 1.6 Case $r > 91 AND $r < 99 ; 92-98 = 7% of the time $xn = -0.15 * $x + 0.28 * $y $yn = 0.26 * $x + 0.24 * $y + 0.44 Case Else ; 99-99 = 1% of the time $xn = 0 $yn = 0.16 * $y EndSelect $x = $xn $y = $yn GUICtrlSetGraphic($Graphic, $GUI_GR_PIXEL, $offset_x + $x * $f, $height - $y * $f) Next GUICtrlSetGraphic($Graphic, $GUI_GR_REFRESH) EndFunc ;==> Fern  
      Here is another example where I have used GDI (my very first attempt at using GDI by the way). This script can generate much larger Ferns and save them to file (png). I have used this script to generate a 20000 x 20000 pixel @ 600 dpi image. Looks really good printed out in full size.
      #include <GDIPlus.au3> #include <GUIConstantsEx.au3> ; Param Local Const $iPxColor = 0xFF00FF00 ; Pixel color for fractal Alpha/R/G/B Local Const $iBgColor = 0xFFFFFFFF ; Background color for image Alpha/R/G/B Local Const $iSize = 1000 ; Hight of fern in pixels - image will have this hight and width too Local Const $iIter = $iSize*400 ; Number of iterations - $iSize * 200 is a good starting point ; Call function ;$start = TimerInit() _Fern($iSize,$iIter) ;MsgBox(0,"Time taken:",Round(TimerDiff($start)/1000,3) &" seconds") ; Function for generating Barnsley Fractal Fern Func _Fern($Size,$Iter) _GDIPlus_Startup() ; initialize GDI+ Local $hBitmap = _GDIPlus_BitmapCreateFromScan0($Size, $Size) ; create an empty bitmap Local $hBmpCtxt = _GDIPlus_ImageGetGraphicsContext($hBitmap) ; get the graphics context of the image _GDIPlus_GraphicsClear($hBmpCtxt, $iBgColor) ; Set the background color for empty bitmap ; Here the magic happens $x=0 ; init $y=0 ; init $f = $Size/10.6 ; scale factor. Complete fern is within 0 <= y <= 9.9983 (with no scale) $offset_x = $Size/2 - $Size/40 ; Side adjustment. Fern is within −2.1820 < x < 2.6558 (with no scale) For $n = 1 To $Iter ; Number of iterations $r = Random(0, 99, 1) Select Case $r < 85 ; 0-84 = 85% of the time $xn = 0.85 * $x + 0.04 * $y $yn = -0.04 * $x + 0.85 * $y + 1.6 Case $r > 84 AND $r < 92 ; 85-91 = 7% of the time $xn = 0.2 * $x - 0.26 * $y $yn = 0.23 * $x + 0.22 * $y + 1.6 Case $r > 91 AND $r < 99 ; 92-98 = 7% of the time $xn = -0.15 * $x + 0.28 * $y $yn = 0.26 * $x + 0.24 * $y + 0.44 Case Else ; 99-99 = 1% of the time $xn = 0 $yn = 0.16 * $y EndSelect $x = $xn $y = $yn _GDIPlus_BitmapSetPixel($hBitmap, $offset_x + $x * $f, $Size - $y * $f, $iPxColor) ; Change pixel color for calculated X,Y Next ; ==> End of magic $File = "\Fractal_Fern_"&StringRight(Hex($iPxColor),6)&"-"&StringRight(Hex($iBgColor),6)&"-"&$iSize&".png" _GDIPlus_ImageSaveToFile($hBitmap, @MyDocumentsDir & $File) ;save bitmap to disk ShellExecute(@MyDocumentsDir & $File); Show it to the world in your default image viewer ; Cleanup GDI+ resources _GDIPlus_GraphicsDispose($hBmpCtxt) _GDIPlus_BitmapDispose($hBitmap) _GDIPlus_Shutdown() EndFunc ;==> _Fern  
       

    • r0ash
      By r0ash
      Hey guys, MattDiesel over Stackoverflow mentioned this beautiful piece of code 
      #include <WindowsConstants.au3> #include <WinAPI.au3> Local $IDM_FONT = 33 Local $hWindow = WinGetHandle("Untitled - Notepad") _WinAPI_PostMessage($hWindow, $WM_COMMAND, $IDM_FONT, 0) Local $hFontWin = WinWait("Font") $select = ControlCommand($hFontWin, "", "ComboBox1", "GetCurrentSelection", "") WinClose($hFontWin) MsgBox(0,"", $select) I realized that _WinAPI_PostMessage can trigger menu click event, even if Notepad is minimized.
      How do we know what is the decimal value of *any menu item or sub-menu item*? How we know "Format > Font" menu-item is 33 as wParam to _WinAPI_PostMessage()? Have a look at snapshot.
      Regards.

    • rootx
      By rootx
      how can I fit the image when the GUI is maximized? I would like to always measure the 50% height and width of the GUI and is always in the bottom right poistion, and does not lose its quality.
      THX
       
      #include <GUIConstantsEx.au3> #include <StaticConstants.au3> #include <WindowsConstants.au3> #include <GDIPlus.au3> #include <Array.au3> #include <WinAPI.au3> #Region ### START Koda GUI section ### Form= $Form1 = GUICreate("Form1", 615, 437, 192, 124,BitOR($GUI_SS_DEFAULT_GUI,$WS_MAXIMIZEBOX,$WS_TABSTOP)) _GDIPlus_Startup() $hImage = _GDIPlus_ImageLoadFromFile(@ScriptDir&"\img.jpg") $hGraphics = _GDIPlus_GraphicsCreateFromHWND($Form1) $resimg = _GDIPlus_ImageResize($hImage,200,300) _GDIPlus_GraphicsDrawImage($hGraphics, $resimg, 0, 0) GUIRegisterMsg($WM_PAINT, "MY_WM_PAINT") ;GUIRegisterMsg($WM_SIZE, "WM_SIZE") GUISetState(@SW_SHOW,$Form1) #EndRegion ### END Koda GUI section ### While 1 $nMsg = GUIGetMsg() Switch $nMsg Case $GUI_EVENT_CLOSE Exit EndSwitch WEnd Func MY_WM_PAINT($hWnd, $iMsg, $wParam, $lParam) #forceref $hWnd, $iMsg, $wParam, $lParam _WinAPI_RedrawWindow($Form1, 0, 0, $RDW_UPDATENOW) _GDIPlus_GraphicsDrawImage($hGraphics, $resimg, 300, 0) _WinAPI_RedrawWindow($Form1, 0, 0, $RDW_VALIDATE) Return $GUI_RUNDEFMSG EndFunc ;==>MY_WM_PAINT ;Func WM_SIZE($hWnd, $iMsg, $iwParam, $ilParam) ; #forceref $hWnd, $iMsg, $iwParam, $ilParam ; Local $xClient, $yClient ; $xClient = BitAND($ilParam, 0x0000FFFF) ; $yClient = BitShift($ilParam, 16) ; _WinAPI_RedrawWindow($Form1, 0, 0, $RDW_UPDATENOW) ; _GDIPlus_GraphicsDrawImage($hGraphics, $resimg, $xClient/2, $yClient/2) ; _WinAPI_RedrawWindow($Form1, 0, 0, $RDW_VALIDATE) ; ConsoleWrite($xClient & " "&$yClient&@CR) ; Return $GUI_RUNDEFMSG ;EndFunc  
    • IErrors
      By IErrors
      I am working on some functionality to detect whether a standard keyboard was used for input in my UI or if a barcode scanner (that acts like a keyboard) was used. Instead of dealing with a scanner SDK, I decided I would read from the raw input to get device info and make a determination.
      I discovered while testing with multiple UIs is that when the WM_INPUT message is received and the function called, the $hWnd param is always the same (apparently whatever handle I set the "hTarget" to in the RAWINPUTDEVICE struct).
      Is this normal behavior??
      Using the test code below, no matter what window you give input to the $hWnd param never changes.
      #include <WindowsConstants.au3> #include <GUIConstantsEx.au3> #include <WinAPISys.au3> $Form1 = GUICreate("Form 1", 300, 300, -1, 10) ConsoleWrite("$Form1 = " & $Form1 & @CRLF) $Edit1 = GUICtrlCreateEdit("", 0, 0, 300, 300) GUISetState(@SW_SHOW, $Form1) $Form2 = GUICreate("Form 2", 300, 300, -1, 350) ConsoleWrite("$Form2 = " & $Form2 & @CRLF) $Edit2 = GUICtrlCreateEdit("", 0, 0, 300, 300) GUISetState(@SW_SHOW, $Form2) GUIRegisterMsg($WM_INPUT, "WM_INPUT") ; https://msdn.microsoft.com/en-us/library/ms645590(v=vs.85).aspx $tRID = DllStructCreate($tagRAWINPUTDEVICE) ; https://msdn.microsoft.com/en-us/library/ms645565(v=vs.85).aspx DllStructSetData($tRID, "UsagePage", 1) DllStructSetData($tRID, "Usage", 6) DllStructSetData($tRID, "Flags", 0) DllStructSetData($tRID, "hTarget", $Form1) ; According to the struct def, if hTarget=NULL then it should follow keyboard focus. - nope :( $pRID = DllStructGetPtr($tRID) _WinAPI_RegisterRawInputDevices($pRID) ; https://msdn.microsoft.com/en-us/library/ms645600(v=vs.85).aspx Do Until GUIGetMsg() = $GUI_EVENT_CLOSE Func WM_INPUT($hWnd, $iMsg, $wParam, $lParam) ConsoleWrite("hWnd = " & $hWnd & " | Title = " & WinGetTitle($hWnd) & @CRLF) ConsoleWrite("Active Window = " & WinGetTitle("[ACTIVE]") & @CRLF) Return $GUI_RUNDEFMSG EndFunc ;==>WM_INPUT