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Possible Error with Image in List View?

4 posts in this topic

Hi,

I am currently working on a project, which involves ListView. And I came across a little problem... I'll be very thankful if someone can help me with it. Well... Here's the problem.

I want to have some kind of image in front of the text. So I looked in the Help File, and found this piece of code.

#include <GuiConstantsEx.au3>
#include <GuiListView.au3>
#include <GuiImageList.au3>

Opt('MustDeclareVars', 1)

$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 $hImage, $hListView
    
    GUICreate("ListView Set Image List", 400, 300)
    $hListView = GUICtrlCreateListView("", 2, 2, 394, 268)
    GUISetState()

    ; Load images
    $hImage = _GUIImageList_Create()
    _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap($hListView, 0xFF0000, 16, 16))
    _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap($hListView, 0x00FF00, 16, 16))
    _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap($hListView, 0x0000FF, 16, 16))
    _GUICtrlListView_SetImageList($hListView, $hImage, 1)

    ; Add columns
    _GUICtrlListView_AddColumn($hListView, "Column 1", 100)
    _GUICtrlListView_AddColumn($hListView, "Column 2", 100)
    _GUICtrlListView_AddColumn($hListView, "Column 3", 100)

    ; Add items
    _GUICtrlListView_AddItem($hListView, "Item 1", 0)
    _GUICtrlListView_AddItem($hListView, "Item 2", 1)
    _GUICtrlListView_AddItem($hListView, "Item 3", 2)
    ;If I change the line above to _GUICtrlListView_AddItem($hListView, "Item 3", -1) it will still show a red square in front of the text 'Item 3', which means that the parameter -1 does not work as expected...
    ;_GUICtrlListView_AddItem($hListView, "Item 3", -1)

    ; Get image list handle
    MsgBox(4160, "Information", "Image List Handle: 0x" & Hex(_GUICtrlListView_GetImageList($hListView, 1)))

    ; Loop until user exits
    Do
    Until GUIGetMsg() = $GUI_EVENT_CLOSE
    GUIDelete()
EndFunc

Well, I think this is what I need. However, I just want some of the texts to have an image display in front of them, and the rest will have no image. So, I try to change the Image parameter to -1, but still, the image is shown... :x

Have I done something wrong, or is it a bug?

Thanks a lot in advance.

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No bug, but either the Listview contains images or it does not, can't be selected per row. A workaround is to add a color matching the window itself and assign that in case you don't want anything to display.

#include <GuiConstantsEx.au3>
#include <GuiListView.au3>
#include <GuiImageList.au3>

#include <WindowsConstants.au3>
#include <Winapi.au3>

Opt('MustDeclareVars', 1)

$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 $hImage, $hListView

    GUICreate("ListView Set Image List", 400, 300)
    $hListView = GUICtrlCreateListView("", 2, 2, 394, 268)
    GUISetState()

    ; Load images
    $hImage = _GUIImageList_Create()
    _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap($hListView, 0xFF0000, 16, 16))
    _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap($hListView, 0x00FF00, 16, 16))
    _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap($hListView, 0x0000FF, 16, 16))
    _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap($hListView, _WinAPI_GetSysColor($COLOR_WINDOW), 16, 16))
    _GUICtrlListView_SetImageList($hListView, $hImage, 1)

    ; Add columns
    _GUICtrlListView_AddColumn($hListView, "Column 1", 100)
    _GUICtrlListView_AddColumn($hListView, "Column 2", 100)
    _GUICtrlListView_AddColumn($hListView, "Column 3", 100)

    ; Add items
    _GUICtrlListView_AddItem($hListView, "Item 1", 0)
    _GUICtrlListView_AddItem($hListView, "Item 2", 1)
    _GUICtrlListView_AddItem($hListView, "Item 3", 4)
    ;If I change the line above to _GUICtrlListView_AddItem($hListView, "Item 3", -1) it will still show a red square in front of the text 'Item 3', which means that the parameter -1 does not work as expected...
    ;_GUICtrlListView_AddItem($hListView, "Item 3", -1)

    ; Get image list handle
    MsgBox(4160, "Information", "Image List Handle: 0x" & Hex(_GUICtrlListView_GetImageList($hListView, 1)))

    ; Loop until user exits
    Do
    Until GUIGetMsg() = $GUI_EVENT_CLOSE
    GUIDelete()
EndFunc

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#3 ·  Posted (edited)

_GUICtrlListView_AddItem($hListView, "Item 3", 3)

gave me a white square. While I know it's not exactly what you were after, it does make it appear there is no image.

*edit*

Kafu beat me to the punch :x

Edited by kaotkbliss

010101000110100001101001011100110010000001101001011100110010000

001101101011110010010000001110011011010010110011100100001

My Android cat and mouse game
https://play.google.com/store/apps/details?id=com.KaosVisions.WhiskersNSqueek

We're gonna need another Timmy!

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Ah, ok, I think I get it. ^^!

Thanks you guys sssssooo much for your help. :P

And have a good day, :x

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