DeleteDll - Learn To Code - PlayBASIC Documentation

DeleteDll

DeleteDll DLLNumber

Parameters:

DLLNumber = The number of the DLL you wish to delete

Returns: NONE

DeleteDll will free the memory used by a DLL back to PlayBASIC and ultimately windows.

FACTS:

* You can only use standard DLLs. See NewAx for ActiveX/COM DLLs

Mini Tutorial:

This example shows how to toggle the visibility of the mouse cursor using Windows' user32.dll.

; Ask PlayBASIC for the Image Index that is currently free for use.
  User32 = GetFreeDll()

; Check if the DLL file exists

  If GetDllExist("user32.dll") <> 1
     Print "DLL doesn't exist"
     Sync
     WaitKey
     End
  EndIf

; Use this index to load the user32.dll
  LoadDll "user32.dll", User32

; "ShowCursor" is the DLL function we want to call.
; first we check if the function exists:
  If GetDllCallExist(user32,"ShowCursor") <> 1
     Print "Function name doesn't exist"
     Sync
     WaitKey
     End
  EndIf

; "ShowCursor" only expects one parameter: passing 1 will
; show the mouse, 0 will hide it
  Print "Now we hide the mouse"
  CallDll(user32,"ShowCursor",0) ; Hide the mouse cursor
  Print "Press a key to show the mouse"
  Sync
  WaitKey : WaitNoKey
  CallDll(user32,"ShowCursor",1) ; Show the mouse cursor
  Print "The mouse is back."
  Sync
  WaitKey
; Delete the DLL from memory
  DeleteDll user32


Related Info:	GetdllStatus \| LinkDll \| LoadDll \| LoadNewDll \| NewAX :