[Left Click] via mouse_event API becomes a [Right Click --> Properties] selecton on Win XP Quick Launch button?

For any experts who are comfortable with heavy API usage...

Take a look at the fine solution I posted here:  *pats self on back*

The app has a small quirk in it that I just can't figure out...

If the app sends a click to a button residing on my XP Quick Launch bar (down on the task bar)...instead of launching the application associated with that button, I instead get the properties dialog for that button as if I had Right clicked on it and selected Properties.

Can anyone else duplicate this problem and if so, shed some light on it?

I am running VB6 on Win XP Pro with all service packs and updates installed.


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Mike TomlinsonMiddle School Assistant TeacherAsked:
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I cannot duplicate the problem on Windows Millenium, I can try it on 2000 when I get a chance...


    mouse_event MOUSEEVENTF_LEFTDOWN, x, y, 0, 0
    mouse_event MOUSEEVENTF_LEFTUP, x, y, 0, 0

have the same problem for you as



Mike TomlinsonMiddle School Assistant TeacherAuthor Commented:
Yes...both configurations produce the same result.

Thank you for taking the time to try it out.

it's b/c alt is still pressed down when you issue the click event... toggle it off.
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it goes w/o saying that you already know how to do this... but to make your life easier:

Public Declare Sub keybd_event Lib "user32" (ByVal bVk As Byte, ByVal bScan As Byte, ByVal dwFlags As Long, ByVal dwExtraInfo As Long)

Public Const VK_ALT = &H12
Public Const KEYEVENTF_KEYUP = &H2


Private Sub clickGrid(ByVal grid As Long)
    Dim x As Single
    Dim y As Single
    ' erase currentgrid
    ' turn off capturing
    capturing = False
    ' calculate new region
    ' and point to click
    calculateNewRegion grid
    x = (currentRegion.Left + currentRegion.Right) / 2#
    y = (currentRegion.Top + currentRegion.Bottom) / 2#
    ' click the center of the selected grid
    Call SetCursorPos(x, y)

    keybd_event VK_ALT, 0, KEYEVENTF_KEYUP, 0 '' *** <---- HERE ***

    'mouse_event MOUSEEVENTF_LEFTDOWN, x, y, 0, 0
    'mouse_event MOUSEEVENTF_LEFTUP, x, y, 0, 0
End Sub

I've tested it and it works... at least for me.

btw: nice piece of code.

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Mike TomlinsonMiddle School Assistant TeacherAuthor Commented:
LOL....    =)

Very nice sleuthing!

I never before realized that holding down Alt and clicking a Quick Launch button brought up its properties dialog.

Thank you bobbit31 for pointing out what is painfully obvious now!

If you comment in these links, I will give you additional points there as well:

Thanks....I can once more sleep peacefully,

lol... good job. Clever trick to bring up the properties dialog, I guess (?).

Thanks for the points, although I don't think I deserve them... I didn't really do anything ;-)

Mike TomlinsonMiddle School Assistant TeacherAuthor Commented:
You took the time to read the question, build the project and test it out for me.

Personally, I hate it when I participate constructively in a question but don't get points because I didn't have the "complete" answer.

Thanks again,

Oh... See, about that: I didn't compile the whole project, it was just the clickGrid subroutine I tested. That's why it "worked". The ALT+Click thing DOES bring up the properties dialog on Windows Millenium (probably a feature of Internet Explorer 4 and later).

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