Tooltip with $TIP_CENTER + $TIP_FORCEVISIBLE

[TimRude]

I'm seeing odd positioning behavior with the ToolTip command when using the $TIP_FORCEVISIBLE flag.

Here's sample code to create a GUI which, when right-clicked, will display a balloon tooltip for 2.5 seconds in the center of the GUI.

#NoTrayIcon
#include <APIConstants.au3>

Example()

Func Example()
    Local $hGUI = GUICreate("Sample GUI", 400, 300)
    Local $idText = GUICtrlCreateLabel("Right-click window to see tooltip", 20, 125, 360, Default, $SS_CENTER)
    GUICtrlSetFont(-1, 12)
    GUISetState(@SW_SHOW)

    Local $hTimer = 0
    While 1
        Local $iMsg = GUIGetMsg()
        Switch $iMsg
            Case $GUI_EVENT_CLOSE ; ESC pressed - close the dialog
                ExitLoop
            Case $GUI_EVENT_SECONDARYUP ; right-click on dialog to display tooltip
                Local $aPos = WinGetPos($hGUI)
                Local $iX = $aPos[0] + ($aPos[2] / 2)
                Local $iY = $aPos[1] + ($aPos[3] / 2)
                ToolTip("Here's your tooltip!", $iX, $iY, Default, Default, $TIP_BALLOON + $TIP_CENTER + $TIP_FORCEVISIBLE)
                $hTimer = TimerInit() ; start the clock running on the tooltip
        EndSwitch
        If $hTimer <> 0 Then
            If TimerDiff($hTimer) >= 2500 Then
                ; 2.5 seconds have elapsed, hide the tooltip
                ToolTip("")
                $hTimer = 0
            EndIf
        EndIf
    WEnd
    If $hTimer <> 0 Then ToolTip("")
    GUIDelete($hGUI)
EndFunc   ;==>Example

Now move the GUI over to the right so most of it is off the edge of the screen and then right-click it again to display the tooltip. I would expect the tooltip to be displayed as close to the right edge of the screen as possible without going off of it. However, there's a gap of about 60 pixels or so between the tooltip and the right-edge.

Now move the GUI over to the left so most of it is off the edge of the screen and then right-click it again to display the tooltip. I would expect the tooltip to be fully displayed as close to the left edge of the screen as possible without going off of it. However, the tooltip is allowed to be displayed partially off-screen.

In the ToolTip help docs, it says: "$TIP_FORCEVISIBLE (4) = Force the tooltip to always be visible confining it to monitor borders if necessary." It doesn't appear to be doing this quite right.

If I remove the $TIP_CENTER flag, it then positions the tooltip properly up against each edge of the screen. So there's evidently something about the combination of $TIP_CENTER and $TIP_FORCEVISIBLE that's throwing off the positioning calculations

Edited February 17, 2023 by TimRude

[TimRude]

A bit of additional testing finds that the gap on the right side is 1/2 the width of the tooltip. If I make the tooltip text longer, the gap becomes longer. And likewise the portion of the tooltip that displays off the left side of the screen is always no more than the left-half of the tooltip.

[TimRude]

Submitted to Bug Tracker.

https://www.autoitscript.com/trac/autoit/ticket/3941

Edited February 18, 2023 by TimRude