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DllStructGetSize byte size

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Hi,

I don't understand how the size of the structure works.

 

I know that an int has a size of 4 bytes, if I get the size of the struct then I have 4 bytes;

a byte has as size of 1 byte, if I get the size of the struct then I have 1 byte.

 

Until here everything seems fine, unless I make a structure with the two elements, the size is 8 bytes; 4+1=5 and not 8.

 

Here is the example :

#include <Constants.au3>
 
Local Const $tagSTRUCT1 = "struct;int var1;endstruct"
Local $tSTRUCT1 = DllStructCreate($tagSTRUCT1)
 
MsgBox($MB_SYSTEMMODAL, "", "Struct1 Size: " & DllStructGetSize($tSTRUCT1))
 
 
Local Const $tagSTRUCT2 = "struct;byte var2;endstruct"
Local $tSTRUCT2 = DllStructCreate($tagSTRUCT2)
 
MsgBox($MB_SYSTEMMODAL, "", "Struct2 Size: " & DllStructGetSize($tSTRUCT2))
 
 
Local Const $tagSTRUCT3 = "struct;int var1;byte var2;endstruct"
Local $tSTRUCT3 = DllStructCreate($tagSTRUCT3)
 
MsgBox($MB_SYSTEMMODAL, "", "Struct3 Size: " & DllStructGetSize($tSTRUCT3))
Thanks for anyhelp :)

Br, FireFox.

Edited by FireFox

 

OS : Win XP SP2 (32 bits) / Win 7 SP1 (64 bits) / Win 8 (64 bits) | Autoit version: latest stable / beta.
Hardware : Intel(R) Core(TM) i5-2400 CPU @ 3.10Ghz / 8 GiB RAM DDR3.

My UDFs : Skype UDF | TrayIconEx UDF | GUI Panel UDF | Excel XML UDF | Is_Pressed_UDF

My Projects : YouTube Multi-downloader | FTP Easy-UP | Lock'n | WinKill | AVICapture | Skype TM | Tap Maker | ShellNew | Scriptner | Const Replacer | FT_Pocket | Chrome theme maker

My Examples : Capture toolIP Camera | Crosshair | Draw Captured Region | Picture Screensaver | Jscreenfix | Drivetemp | Picture viewer

My Snippets : Basic TCP | Systray_GetIconIndex | Intercept End task | Winpcap various | Advanced HotKeySet | Transparent Edit control

 

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Firefox, we need to use align here. Read help file for DllStructCreate() function

FROM help file:

DllStructCreate("short;int") ; structure is 8 bytes, the "int" is at offset 4
DllStructCreate("align 2;short;int") ; structure is 6 bytes, the "int" is at offset 2

Regards,

MKISH

Edited by MKISH

----------------------------------------

:bye: Hey there, was I helpful?

----------------------------------------

My Current OS: Win8 PRO (64-bit); Current AutoIt Version: v3.3.8.1

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I already read the helpfile ofc, I just didn't understand how it worked. Had to have a little break to get it.

Thank you.


 

OS : Win XP SP2 (32 bits) / Win 7 SP1 (64 bits) / Win 8 (64 bits) | Autoit version: latest stable / beta.
Hardware : Intel(R) Core(TM) i5-2400 CPU @ 3.10Ghz / 8 GiB RAM DDR3.

My UDFs : Skype UDF | TrayIconEx UDF | GUI Panel UDF | Excel XML UDF | Is_Pressed_UDF

My Projects : YouTube Multi-downloader | FTP Easy-UP | Lock'n | WinKill | AVICapture | Skype TM | Tap Maker | ShellNew | Scriptner | Const Replacer | FT_Pocket | Chrome theme maker

My Examples : Capture toolIP Camera | Crosshair | Draw Captured Region | Picture Screensaver | Jscreenfix | Drivetemp | Picture viewer

My Snippets : Basic TCP | Systray_GetIconIndex | Intercept End task | Winpcap various | Advanced HotKeySet | Transparent Edit control

 

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#FUNCTION# ==================================================================================================================== ; Name...........: GUICtrlComboSetColors_SetAutoSize ; Description ...: Set autosize for a ComboBox initialized in GUICtrlComboSetColors() ; Syntax.........: GUICtrlComboSetColors ( $idCombo [, $iExtendLeft = Default] [, $sFont = Default] [, $fSize = Default] [, $iStyle = Default] ) ; Parameters ....: $idCombo - GUICtrlCreateCombo() ControlID / [ ArrayIndex ] ; $iExtendLeft - 1 = Left, 2 = Right, 0 = disable auto-sizing ; $sFont - Font name ; $fSize - Font size ; $iStyle - Font style ; Return values .: Success - widthest string in pixels ; Failure - -1 ; @error - look at the comments in the function ; Author ........: argumentum ; Modified.......: v0.0.0.5 ; Remarks .......: this UDF is in its a work in progress, will expand if needed. ; Related .......: GUICtrlComboSetColors() ; Link ..........: https://www.autoitscript.com/forum/topic/191035-combobox-set-dropdownlist-bgcolor/ ; Example .......: Yes, at the end of the file ; =============================================================================================================================== Func GUICtrlComboSetColors_SetAutoSize($idCombo, $iExtendLeft = Default, $sFont = Default, $fSize = Default, $iStyle = Default) ConsoleWrite('+ Func GUICtrlComboSetColors_AutoSizeSet("' & $idCombo & '", "' & $iExtendLeft & '", "' & $sFont & '", "' & $fSize & '", "' & $iStyle & '")' & @CRLF) $idCombo = Int($idCombo) ; just in case the value is a string Local $n, $iArrayIndex = 0, $iCtrl = 0 If $idCombo > 0 Then For $n = 1 To $g__aWM_CTLCOLORLISTBOX[0][0] If $g__aWM_CTLCOLORLISTBOX[$n][0] = $idCombo Then ; the expected value, is the ControlID $iArrayIndex = $n ExitLoop EndIf Next Return SetError(4, 0, -1) ; $iArrayIndex not found ElseIf $idCombo < 0 Then ; the expected value, is a negative of array's index .. $iArrayIndex = Int(StringTrimLeft(StringStripWS($idCombo, 8), 1)) ; .. so now is a positive value .. If $iArrayIndex < 1 Then Return SetError(3, 0, -1) ; .. else, error .. If $iArrayIndex > $g__aWM_CTLCOLORLISTBOX[0][0] Then Return SetError(2, 0, -1) ; .. as long as is not greater than expected Else Return SetError(1, 0, -1) ; could not find a usable value EndIf Switch $iExtendLeft Case 0, 1, 2 $g__aWM_CTLCOLORLISTBOX[$iArrayIndex][12] = $iExtendLeft EndSwitch Local $aCtrlPos = WinGetPos($g__aWM_CTLCOLORLISTBOX[$iArrayIndex][1]) If UBound($aCtrlPos) <> 4 Then Return SetError(5, 0, -1) ; could not get a usable value Local $sString = StringReplace(_GUICtrlComboBox_GetList($g__aWM_CTLCOLORLISTBOX[$iArrayIndex][0]), "|", @CRLF) Local $aStrWidth = _GDIPlus_MeasureString($sString, $g__aWM_CTLCOLORLISTBOX[$iArrayIndex][13], $g__aWM_CTLCOLORLISTBOX[$iArrayIndex][14], $g__aWM_CTLCOLORLISTBOX[$iArrayIndex][15]) If UBound($aStrWidth) <> 2 Then Return SetError(6, 0, -1) ; could not get a usable value If $aStrWidth[0] < $aCtrlPos[2] Then $g__aWM_CTLCOLORLISTBOX[$iArrayIndex][8] = 0 Else $g__aWM_CTLCOLORLISTBOX[$iArrayIndex][8] = $aStrWidth[0] - $aCtrlPos[2] If $g__aWM_CTLCOLORLISTBOX[$iArrayIndex][12] = 2 Then $g__aWM_CTLCOLORLISTBOX[$iArrayIndex][8] = Int("-" & $aStrWidth[0] - $aCtrlPos[2]) EndIf Return $aStrWidth[0] EndFunc ;==>GUICtrlComboSetColors_SetAutoSize Func _GDIPlus_MeasureString($sString, $sFont = "Arial", $fSize = 12, $iStyle = 0, $bRound = True) ConsoleWrite('Func _GDIPlus_MeasureString("' & $sString & '", "' & $sFont & '", "' & $fSize & '", "' & $iStyle & '", "' & $bRound & '")' & @CRLF) ; original code @ https://www.autoitscript.com/forum/topic/150736-gdi-wrapping-text/?do=findComment&comment=1077210 If Not $__g_iGDIPRef Then _GDIPlus_Startup() ; added by argumentum for this UDF's implementation ( AutoIt v3.3.14 ) due to the way the function is written ;~ Func _GDIPlus_Startup($sGDIPDLL = Default, $bRetDllHandle = False) ;~ $__g_iGDIPRef += 1 <-- I believe this aspect should be coded differently in "GDIPlus.au3" ;~ If $__g_iGDIPRef > 1 Then Return True Local $aSize[2] Local Const $hFamily = _GDIPlus_FontFamilyCreate($sFont) If Not $hFamily Then Return SetError(1, 0, $aSize) Local Const $hFormat = _GDIPlus_StringFormatCreate() Local Const $hFont = _GDIPlus_FontCreate($hFamily, $fSize, $iStyle) Local Const $tLayout = _GDIPlus_RectFCreate(0, 0, 0, 0) Local Const $hGraphic = _GDIPlus_GraphicsCreateFromHWND(0) Local $aInfo = _GDIPlus_GraphicsMeasureString($hGraphic, $sString, $hFont, $tLayout, $hFormat) $aSize[0] = $bRound ? Round($aInfo[0].Width, 0) : $aInfo[0].Width $aSize[1] = $bRound ? Round($aInfo[0].Height, 0) : $aInfo[0].Height _GDIPlus_FontDispose($hFont) _GDIPlus_FontFamilyDispose($hFamily) _GDIPlus_StringFormatDispose($hFormat) _GDIPlus_GraphicsDispose($hGraphic) Return $aSize EndFunc ;==>_GDIPlus_MeasureString Func OnAutoItExit_UDF_WM_CTLCOLORLISTBOX() For $i = 1 To $g__aWM_CTLCOLORLISTBOX[0][0] If Int($g__aWM_CTLCOLORLISTBOX[$i][5]) Then _WinAPI_DeleteObject($g__aWM_CTLCOLORLISTBOX[$i][5]) Next If $__g_iGDIPRef Then _GDIPlus_Shutdown() EndFunc ;==>OnAutoItExit_UDF_WM_CTLCOLORLISTBOX #EndRegion GUICtrlComboSetColors UDF Example() Func Example() ; Create GUI GUICreate("ComboBox Set DROPDOWNLIST BgColor", 640, 300) Local $a_idCombo[7] = [6] $a_idCombo[1] = GUICtrlCreateCombo("", 2, 2, 390, 296, BitOR($CBS_DROPDOWNLIST, $WS_HSCROLL, $WS_VSCROLL)) GUICtrlComboSetColors($a_idCombo[1], 0xEEEEEE, -2, Default) Example_FillTheCombo($a_idCombo[1]) GUICtrlCreateLabel("<<< change BG color, default theme && size ", 400, 4, 396, 296) $a_idCombo[2] = GUICtrlCreateCombo("", 2, 32, 390, 296, BitOR($CBS_DROPDOWNLIST, $WS_HSCROLL, $WS_VSCROLL)) GUICtrlComboSetColors($a_idCombo[2], 0x0000FF, 0xFFFF00, 0) Example_FillTheCombo($a_idCombo[2]) GUICtrlCreateLabel("<<< change colors", 400, 34, 396, 296) $a_idCombo[3] = GUICtrlCreateCombo("", 2, 62, 390, 296, BitOR($CBS_DROPDOWNLIST, $WS_HSCROLL, $WS_VSCROLL)) GUICtrlComboSetColors($a_idCombo[3], 0xdddddd, Default, 100) Example_FillTheCombo($a_idCombo[3]) GUICtrlCreateLabel("<<< change BG color, resize 100px. left", 400, 64, 396, 296) $a_idCombo[4] = GUICtrlCreateCombo("", 2, 92, 390, 296, BitOR($CBS_DROPDOWNLIST, $WS_HSCROLL, $WS_VSCROLL)) GUICtrlComboSetColors($a_idCombo[4], Default, 0x0000FF, -100) Example_FillTheCombo($a_idCombo[4]) GUICtrlCreateLabel("<<< change FG color, resize 100px. right", 400, 94, 396, 296) $a_idCombo[5] = GUICtrlCreateCombo("", 2, 122, 390, 296, BitOR($CBS_DROPDOWNLIST, $WS_HSCROLL, $WS_VSCROLL)) GUICtrlComboSetColors($a_idCombo[5], 0x00FFFF, 0x0000FF, 1) Example_FillTheCombo($a_idCombo[5]) GUICtrlCreateLabel("<<< change colors, resize auto left", 400, 124, 396, 296) $a_idCombo[6] = GUICtrlCreateCombo("", 2, 152, 390, 296, BitOR($CBS_DROPDOWNLIST, $WS_HSCROLL, $WS_VSCROLL)) GUICtrlSetFont($a_idCombo[6], 10, 400, 0, "Courier New") GUICtrlComboSetColors($a_idCombo[6], Default, Default, "2;Courier New;10") Example_FillTheCombo($a_idCombo[6]) GUICtrlCreateLabel("<<< default colors, resize auto right", 400, 154, 396, 296) Local $bttnArrayShow = GUICtrlCreateButton("Show array", 2, 296 - 27, 75, 25) Local $bttnStrMore = GUICtrlCreateButton("Longer str.", 102, 296 - 27, 75, 25) Local $idLorem = GUICtrlCreateLabel("", 195, 296 - 27, 50, 25) Local $bttnStrLess = GUICtrlCreateButton("Shorter str.", 252, 296 - 27, 75, 25) GUISetState(@SW_SHOW) WinActivate("ComboBox Set DROPDOWNLIST BgColor") ;~ Sleep(3500) ; you can reassign colors, size, or restore default ;~ GUICtrlComboSetColors($idCombo5, Default, Default, 300) ; this resets the Control back to default and changes $iExtendLeft ;~ GUICtrlComboSetColors($idCombo5, 0x0000FF, 0x00FFFF, -1) ; this changes the colors and keeps $iExtendLeft as it was ;~ GUICtrlComboSetColors($idCombo5, -1, -1, 300) ; using "-1" will keep the existing colors ;~ ; so in this case, only the $iExtendLeft is declared ;~ Example_FillTheCombo($idCombo5) ;~ Sleep(500) ; after removal, it will not repaint "hList", but then again, you're deleteing the control ;~ GUICtrlComboSetColors($idColors, -3) ;~ GUICtrlDelete($idCombo2) Local $iLorem = 5, $sLorem = "" Example_LoremStr($iLorem, $sLorem, $a_idCombo, $idLorem) ; Loop until the user exits. While 1 Switch GUIGetMsg() Case $GUI_EVENT_CLOSE GUIDelete() Return Case $bttnArrayShow _ArrayDisplay($g__aWM_CTLCOLORLISTBOX, "$g__aWM_CTLCOLORLISTBOX") Case $bttnStrMore $iLorem += 5 Example_LoremStr($iLorem, $sLorem, $a_idCombo, $idLorem) Case $bttnStrLess $iLorem -= 5 Example_LoremStr($iLorem, $sLorem, $a_idCombo, $idLorem) EndSwitch WEnd EndFunc ;==>Example Func Example_FillTheCombo(ByRef $idComboCtrl) GUICtrlSetData($idComboCtrl, "") _GUICtrlComboBox_AddString($idComboCtrl, "something") _GUICtrlComboBox_AddString($idComboCtrl, "something else") _GUICtrlComboBox_AddString($idComboCtrl, "blah, blah, blah, blah") _GUICtrlComboBox_AddString($idComboCtrl, "Lorem will change") Local $a = _GUICtrlComboBox_GetListArray($idComboCtrl) GUICtrlSetData($idComboCtrl, $a[1]) EndFunc ;==>Example_FillTheCombo Func Example_LoremStr(ByRef $iLorem, ByRef $sLorem, ByRef $a_idCombo, ByRef $idLorem) Local Static $s = "Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat." $s &= " Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat." Local Static $i = 5, $a = StringSplit($s, " ") If $iLorem < 1 Then $iLorem = 1 If $iLorem > $a[0] Then $iLorem = $a[0] Local $x, $iLastEntry $sLorem = "" GUICtrlSetData($idLorem, $iLorem & ' words') For $x = 1 To $iLorem $sLorem &= $a[$x] & " " Next For $x = 1 To $a_idCombo[0] $iLastEntry = _GUICtrlComboBox_GetCount($a_idCombo[$x]) - 1 _GUICtrlComboBox_DeleteString($a_idCombo[$x], $iLastEntry) _GUICtrlComboBox_AddString($a_idCombo[$x], $sLorem) Next EndFunc ;==>Example_LoremStr new in v0.0.0.5: auto size the dropdown.
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