Opened 15 years ago

Closed 15 years ago

#665 closed Bug (No Bug)

_GUICtrlListView_SetColumnWidth et al. lack proper typecasting in GUICtrlSendMsg

Reported by: sys55@… Owned by:
Milestone: Component: AutoIt
Version: Severity: None
Keywords: Cc:


Bug: _GUICtrlListView_SetColumnWidth et al. lack proper typecasting in GUICtrlSendMsg

Description: the $iWidth parameter in _GUICtrlListView_SetColumnWidth($hWnd, $iCol, $iWidth) causes the UDF to run havock when $iWidth is a numeric string. E.g.:
_GUICtrlListView_SetColumnWidth($ListView, 0, 100) works fine but
_GUICtrlListView_SetColumnWidth($ListView, 0, "100") doesn't.

This bug was found calling the UDF with a numeric value read from file as a string. The UDF source reveals that GUICtrlSendMsg is called without typecasting to the correct lParam type. Appearently GUICtrlSendMsg doesn't do it either, which is an even more severe bug.

Demo: slightly extended demo from _GUICtrlListView_SetColumnWidth demo in help file. See below.

#AutoIt3Wrapper_au3check_parameters=-d -w 1 -w 2 -w 3 -w 4 -w 5 -w 6
#include <GuiConstantsEx.au3>
#include <GuiListView.au3>

$Debug_LV = False ; Check ClassName being passed to ListView functions, set to True and use a handle to another control to see it work


Func _Main()
	Local $hListView

	GUICreate("ListView Set Column Width", 400, 300)
	$hListView = GUICtrlCreateListView("Column 1|Column 2|Column 3|Column 4", 2, 2, 394, 268)

	; Change column 1 width
	MsgBox(4160, "Information", "Column 1 Width: " & _GUICtrlListView_GetColumnWidth($hListView, 0))
	_GUICtrlListView_SetColumnWidth($hListView, 0, 150)
	MsgBox(4160, "Information", "Column 1 Width: " & _GUICtrlListView_GetColumnWidth($hListView, 0))
; next setting cases wrong setting/shows bug
	$temp = "200"
	_GUICtrlListView_SetColumnWidth($hListView, 0, $temp)
	MsgBox(4160, "Information", "Column 1 Width: " & _GUICtrlListView_GetColumnWidth($hListView, 0))

	; Loop until user exits

EndFunc   ;==>_Main

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Change History (1)

comment:1 Changed 15 years ago by Gary

  • Resolution set to No Bug
  • Status changed from new to closed

if you are passing a string you need cast the type.

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