Solved

Button's tool tip can't show on WinXP platform.

Posted on 2001-08-02
6
274 Views
Last Modified: 2013-11-20
Hi! I have a question about tooltips. I wrote a program running on WinXP platform. I try to make my program look like "Windows XP Visual Styles", so I use a XML format file to invoke ComCtl32.dll version 6 to make it work. As a result, my program DOES look like Windows XP Visual Styles, but the tooltips on all buttons are gone... I find that it fails when I use "SendMessage(TTM_GETCURRENTTOOL, 0, (LPARAM)&ti))" (Note. ti is TOOLINFO data type). I got a NULL value for ti data structure. Anybody knows what is happening? Please help me out... Thanks in advanced.    


Best Regards,

Jenny

p.s. the tooltips running on Win2000 is working properly.
0
Comment
Question by:jennyhou
  • 3
  • 2
6 Comments
 
LVL 6

Expert Comment

by:MichaelS
ID: 6344324
Can you show your code where you fill ti?
0
 
LVL 9

Accepted Solution

by:
ShaunWilde earned 200 total points
ID: 6344456
have you set the cbSize member of you TOOLINFO structure?

ti.cbSize=sizeof(TOOLINFO);

0
 

Author Comment

by:jennyhou
ID: 6347261
Hello! ShaunWilde,

Thanks for your tips. you remind me to focus on TOOLINFO "SIZE" issue. one of my friends wrote a piece of codes(a class which is derived from CToolTipCtrl) to deal with tooltips for me. That's the codes my friend wrote long time ago... I do not know why he used a user-defined structure just like TOOLINFO, but size is a little bit different. So That's why I got a NULL value for ti data structure except ti.cbSize.(I got incorrect ti.cbSize value) Thanks a lot!


Jenny  
0
Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

 
LVL 9

Expert Comment

by:ShaunWilde
ID: 6347669
glad to help - a pitfall I usually do myself at least once a month
0
 
LVL 6

Expert Comment

by:MichaelS
ID: 6347754
Than it sounds strange that it worked under other OS.

>p.s. the tooltips running on Win2000 is working properly
0
 
LVL 9

Expert Comment

by:ShaunWilde
ID: 6347802
> Than it sounds strange that it worked under other OS.

may be maybe not - other OSs may not check the value as they will only fill in the minimum structure however later OS builds may have more to add to the structure so they will check the size value to know whether it is safe to do so - not an uncommon practice - just annoying as it makes you get away with bad code that works on one OS and doesn't on another

0

Featured Post

Networking for the Cloud Era

Join Microsoft and Riverbed for a discussion and demonstration of enhancements to SteelConnect:
-One-click orchestration and cloud connectivity in Azure environments
-Tight integration of SD-WAN and WAN optimization capabilities
-Scalability and resiliency equal to a data center

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
sum28 challenge 31 115
zeroMAx challenge 20 113
fix34  challenge 9 143
Problem to Office 1 15
Introduction: Database storage, where is the exe actually on the disc? Playing a game selected randomly (how to generate random numbers).  Error trapping with try..catch to help the code run even if something goes wrong. Continuing from the seve…
Introduction: Dialogs (2) modeless dialog and a worker thread.  Handling data shared between threads.  Recursive functions. Continuing from the tenth article about sudoku.   Last article we worked with a modal dialog to help maintain informat…
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…

828 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question