Allocates memory for storing ListBox items
#include <GuiComboBoxEx.au3>
_GUICtrlComboBoxEx_InitStorage ( $hWnd, $iNum, $iBytes )
| $hWnd | Handle to the control |
| $iNum | Number of items to add |
| $iBytes | The amount of memory to allocate for item strings, in bytes |
| Success: | the total number of items for which memory has been pre-allocated. |
| Failure: | $CB_ERRSPACE. |
Helps speed up the initialization of ComboBoxes that have a large number of items (over 100).
You can use estimates for the $iNum and $iBytes parameters.
If you overestimate, the extra memory is allocated.
If you underestimate, the normal allocation is used for items that exceed the requested amount.
_GUICtrlComboBoxEx_AddDir, _GUICtrlComboBoxEx_AddString, _GUICtrlComboBoxEx_InsertString
#include <GuiComboBoxEx.au3>
#include <GUIConstantsEx.au3>
#include <MsgBoxConstants.au3>
Example()
Func Example()
Local $hGUI, $hCombo
; Create GUI
$hGUI = GUICreate("ComboBoxEx Init Storage", 400, 300)
$hCombo = _GUICtrlComboBoxEx_Create($hGUI, "", 2, 2, 396, 296, $CBS_SIMPLE)
GUISetState(@SW_SHOW)
MsgBox($MB_SYSTEMMODAL, "Information", "Init Storage Pre-Allocated Memory For: " & _GUICtrlComboBoxEx_InitStorage($hCombo, 150, 300) & " Items")
_GUICtrlComboBoxEx_BeginUpdate($hCombo)
For $x = 0 To 149
_GUICtrlComboBoxEx_AddString($hCombo, StringFormat("%03d : Random string", Random(1, 100, 1)))
Next
_GUICtrlComboBoxEx_EndUpdate($hCombo)
Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE
EndFunc ;==>Example