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ListView and GUISetFont()-problem


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The last weeks I had a big problem with one of my GUI-programs. My screen starts to flicker as sonn as I updated my ListView-entries. I wasn't sure if I made a mistake or if it was a GUI-bug. Coincidentally another program started to flicker also and I could link this with the usage of GUISetFont. I tried to reproduce this with the sample code of the ListView doc. Here is the adapted code. To see the effect start the program with the different font variables and fill the ListView with multiple clicks to the add-button. Can anyone confirm this behavior?

#include <GUIConstants.au3>

GUICreate("listview items",220,250, 100,200,-1,$WS_EX_ACCEPTFILES)
GUISetBkColor (0x00E0FFFF) ; will change background color

;$FONT = ""; --> added by me (NO FLICKERING)
$FONT = "Courier"; --> added by me (FLICKERING SCREEN)
GUISetFont (9, 400, -1, $FONT); --> added by me

$listview = GuiCtrlCreateListView ("col1  |col2|col3  ",10,10,200,150);,$LVS_SORTDESCENDING)
$button = GuiCtrlCreateButton ("Add",75,170,70,20); -> changed by me
$item1=GuiCtrlCreateListViewItem("item2|col22|col23",$listview)
$item2=GuiCtrlCreateListViewItem("item1|col12|col13",$listview)
$item3=GuiCtrlCreateListViewItem("item3|col32|col33",$listview)
$input1=GuiCtrlCreateInput("",20,200, 150)
GuiCtrlSetState(-1,$GUI_ACCEPTFILES)  ; to allow drag and dropping
GuiSetState()
GUICtrlSetData($item2,"ITEM1")
GUICtrlSetData($item3,"||COL33")
GUICtrlDelete($item1)

Do
  $msg = GuiGetMsg ()
    
   Select
      Case $msg = $button
        ;MsgBox(0,"listview item",GuiCtrlRead(GuiCtrlRead($listview)),2)
         $itemX=GuiCtrlCreateListViewItem("one|two|three",$listview); --> added by me
      Case $msg = $listview
         MsgBox(0,"listview", "clicked="& GuiCtrlGetState($listview),2)
   EndSelect
Until $msg = $GUI_EVENT_CLOSE
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The last weeks I had a big problem with one of my GUI-programs. My screen starts to flicker as sonn as I updated my ListView-entries. I wasn't sure if I made a mistake or if it was a GUI-bug. Coincidentally another program started to flicker also and I could link this with the usage of GUISetFont. I tried to reproduce this with the sample code of the ListView doc. Here is the adapted code. To see the effect start the program with the different font variables and fill the ListView with multiple clicks to the add-button. Can anyone confirm this behavior?

<{POST_SNAPBACK}>

Yes, I get a single screen flicker when the Add button is pressed and the font is set to Courier. I also tried a couple of other fonts with the same result. When the font name is a null string, there is no flicker.

Phillip

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