Custom Query

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

_Main()

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)
	GUISetState()

	; 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
	Do
	Until GUIGetMsg() = $GUI_EVENT_CLOSE

	GUIDelete()
EndFunc   ;==>_Main

I'm too lazy right now to take apart my code to show an example, so hopefully what I say is understandable. I set up a listview in conjunction with a WM_Notify function. When the CELL of the checkbox is clicked, it registers but the box isn't checked, which throws off my function. I believe that if the surrounding cell is clicked the checkbox should be checked as well. If this is not a "bug" I think this should be how it functions...unless there is a specific reason why it isn't like that.

Note: As a workaround I tried to put in the function to check if the checkbox is checked after there is a register on that item and then check it if it isn't checked...so if someone clicks the surrounding cell...but that doesn't work at all.

True Or True And False

return False, but equivalent expression

True Or (True And False)

return True