Problem with TrackPopupMenu/TPM_LEFTALIGN
Printed From: Codejock Forums
Category: Codejock Products
Forum Name: Skin Framework
Forum Description: Topics Related to Codejock Skin Framework
URL: http://forum.codejock.com/forum_posts.asp?TID=24117
Printed Date: 29 April 2024 at 1:05am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Problem with TrackPopupMenu/TPM_LEFTALIGN
Posted By: rdefulio
Subject: Problem with TrackPopupMenu/TPM_LEFTALIGN
Date Posted: 21 December 2020 at 5:51pm
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I recently upgraded a legacy vb6 project from SkinFramework ActiveX Control 16.3.1 to 19.3.0 and Popup menu alignments started failing. I am using the Windows TrackPopupMenu API to build a pop up menu and display it in the appropriate location in the application. See the following simplified example. Flags = TPM_RIGHTBUTTON + TPM_NONOTIFY + TPM_RETURNCMD iMenu = TrackPopupMenu(hMenu, Flags + TPM_LEFTALIGN, p.x, p.y, 0, GetForegroundWindow(), 0) iMenu = TrackPopupMenu(hMenu, Flags + TPM_CENTERALIGN, p.x, p.y, 0, GetForegroundWindow(), 0) iMenu = TrackPopupMenu(hMenu, Flags + TPM_RIGHTALIGN, p.x, p.y, 0, GetForegroundWindow(), 0) In this example, LEFTALIGN ignores the value in p.x and treats it as zero, basically putting it at the left-most position on the display. The Center and Right align work properly. I reproduced this in the SkinControls sample application. Rolling back to 16.3.1 fixes the issue. I reproduced the issue in version 17.3, 18.4, and 19.3. I need to upgrade because of an apparrent bug in 16.3 that affects scroll bars on server 2016 that the newer versions fix. Here's what happens with TPM_LEFTALIGN (Incorrect behavior)  And here's what happens with TPM_CENTERALIGN (This is the correct behavior)  Note that changing the application from LEFT to CENTER is not a desirable workaround because it changes where the popup appears relative to the mouse cursor (left, center or right aligned based on the mouse cursor's location). Can I get a fix expedited for this? Thanks Ron [Edited to fix images] |