JonathanR Posted January 15, 2010 Share Posted January 15, 2010 Just wondering if there is any reason to open and close a dll manually, compared to letting DllCall open/close it for you. I assume that if you were to make a bunch of dll calls, you'd want to manually open/close so you'd only have to open it once rather than for every call, but is it worth doing? How do you open/close your dlls? Link to comment Share on other sites More sharing options...
Moderators Melba23 Posted January 15, 2010 Moderators Share Posted January 15, 2010 JRouleau,If I am going to call a DLL repeatedly (using _IsPressed in a loop is a good example) then I will always open and close the DLL. Why waste CPU cycles opening and closing the DLL each time? From the Help file for _IsPressed:If calling this function repeatedly, should open 'user32.dll' and pass in handleThe same is true for file opening/closing. The Help file for FileWriteLine is equally specific:If a filename is given rather than a file handle, the file will be opened and closed during the function call. For parsing large text files this will be much slower than using filehandlesM23 Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind Open spoiler to see my UDFs: Spoiler ArrayMultiColSort ---- Sort arrays on multiple columnsChooseFileFolder ---- Single and multiple selections from specified path treeview listingDate_Time_Convert -- Easily convert date/time formats, including the language usedExtMsgBox --------- A highly customisable replacement for MsgBoxGUIExtender -------- Extend and retract multiple sections within a GUIGUIFrame ---------- Subdivide GUIs into many adjustable framesGUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView itemsGUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeViewMarquee ----------- Scrolling tickertape GUIsNoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxesNotify ------------- Small notifications on the edge of the displayScrollbars ----------Automatically sized scrollbars with a single commandStringSize ---------- Automatically size controls to fit textToast -------------- Small GUIs which pop out of the notification area Link to comment Share on other sites More sharing options...
ProgAndy Posted January 15, 2010 Share Posted January 15, 2010 (edited) When using dlls that establish a connection which should be persistent throgh multiple DLLCalls, you have to use DLLopen or you would not be able to proceed. Examples are: WinHTTP, MySQL(libmysql), FTP, BASS.dll, ...The DLLClose is not that important, since you can just leave the DLL opened until termination, then it will be freed automatically. Edited January 15, 2010 by ProgAndy *GERMAN* [note: you are not allowed to remove author / modified info from my UDFs]My UDFs:[_SetImageBinaryToCtrl] [_TaskDialog] [AutoItObject] [Animated GIF (GDI+)] [ClipPut for Image] [FreeImage] [GDI32 UDFs] [GDIPlus Progressbar] [Hotkey-Selector] [Multiline Inputbox] [MySQL without ODBC] [RichEdit UDFs] [SpeechAPI Example] [WinHTTP]UDFs included in AutoIt: FTP_Ex (as FTPEx), _WinAPI_SetLayeredWindowAttributes Link to comment Share on other sites More sharing options...
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