Added missing RTF document. Now with Life Insurance. Gotta be the most stable, non-thunking, subclassing DLL around. Added GPF error trapping (automatic for IDE & user-opted for compiled apps). As before, more comments than code. Includes built-in tray icon, window size restriction, & system menu disabling capabilities. Compatible down to Win95. Plenty of examples & a QuickLook file for an overview of the functions/properties. Only one way to get familiar with it::Play. Be warned that if the message or button says it will crash, it WILL crash by design. Those examples given to prove the limitations of the DLL. Open vbg file for IDE samples, compile individual vbp files to test compiled capabilities too. Check back every now & again to see if updates posted. You will be informed right here: Last Updated: 31 Mar 10:30 by request, added a simple custom system menu example to the System Menu sample project. No changes made to the DLL. 22Feb07: Re-Added missing RTF QuickLook document.
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Major change: GPF protection. This is such a huge plus that it was worth losing the 15+ previous votes to get the latest out to you guys/gals that may be using it already. Big Thanx goes to Alan (aka A|T) for pointing me in that direction & bearing w/me while troubleshooting it too. Also Thanx to Ed Porter for major help with v2. (If this comment was disrespectful, please report it.)
Thanks for the mention, but I wasn't much help! I still have not been able to crash V2 - I don't know how I will be able to test crash V3 (but I'll try!)
This is excellent, professional code. It is extremely easy to use and is very robust. Should definitely be in everyone's Hall of Fame. 5 stars! (If this comment was disrespectful, please report it.)
Now remember folks. 99.9% of the dll limitations are applicable if the dll is NOT compiled. Compile it & it is almost crash proof, end statements or no end statements... If you want to code safely while subclassing compile the DLL and simply reference it in your project. While in IDE, you will still get the good GPF protection, end statements don't crash, and your IDE stays alive. Although I made every attempt to keep IDE alive if DLL is uncompiled; just can't do it without ASM thunking. (If this comment was disrespectful, please report it.)
Ed, you were a big help. I no longer have 95 & never owned XP. Your help saved me the embarrassment of putting out a best guess product & simply hoping it would work. 'Cause of your help, I posted with confidence -- to me that is a big thing. A|T provided similar assistance with v3 & XP. (If this comment was disrespectful, please report it.)
Keith, don't think about the lost votes - trust in your fans ;-) ! Here are my 5 ***** once more and thx for the many hours you put in! LiTe (If this comment was disrespectful, please report it.)
Minor change suggested. It will be changed next time I update this post and pertains primarily to compiled exes: 1) lvSubclasser.SubclassMe - chg optional parameter to gpfIDE + gpfCompiled vs just gpfIDE, 2) cInit.ResetGPFhandle - erase the "If gpfHandle Then" part so that the line executes every time. <> After more trial & error, compiled exes do not have an EH which means gpfHandle will be zero in that case & the IF statement will prevent DLL from replacing the GPF pointer of zero.
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One small limitation (depends on needs) is that an hWnd can only be subclassed once. Major modifications needed to allow subclassing a single hWnd multiple times simultaneously (global class & internal routing routines). If I find the need to do this, haven't yet, I'll post a v4. In the meantime, if you wish to add that functionality & repost, feel free. Tip: if done, the DLL should allow multiple, simultaneous, subclassing on a single hWnd in same process & across multiple processes. One request please. If you repost w/your mods, specifically annotate what you have added or changed. I don't want to get blamed for something you did & you don't want to get blamed for something I did. (If this comment was disrespectful, please report it.)
Keith, all I did was point. You're the one who worked it all out. But, thanks or the props anyway. That said, I think this library is rock-solid and wouldn't hesitate to use it in a commercial application or any of my company's production applications. Also, I would add that even if you don't want to use this library for subclassing, you should still use it for the GPF Protection. Do any of you remember VB Crash Guard? Anyway, the GPF Protection will give you a starting point if your app begins to receive the kind of page faults you see sprinkled throughout the newsgroups. You can use the crash protection to help you figure out the problem and, if you're really good, allow you program to continue executing. If not, at least it can help you shutdown your application more gracefully than a windows page fault message box. This is actually quite a powerful library and it is all pure vb. Download it, learn it, use it! (If this comment was disrespectful, please report it.)
I solved that problem long ago, each time I install VB6, I replace the play button with the "full compile" version :) Also, do you sleep sometimes? You have 4 submissions in the top this month lol (If this comment was disrespectful, please report it.)
Updated for minor fix; cFunctions had .rgbBytes(0) vs rgbBytes(0). If I followed my own advice & started project w/Ctrl+F5 would have seen it sooner. I'm sure most caught that one. In addition changed the way parameter are sent to your ProcessMessage event. The wParam & lParam are now byRef vs byVal; allowing you to directly change their values vs using ForwardMessage. (If this comment was disrespectful, please report it.)
Guys/Gals. Not all GPFs are the same. Using RaiseException as done in this project creates Access Violation GPF & easily trapped. Using CopyMemory to create Access Violation may not be recoverable--well not by this project. An update is in final testing stages to specifically trap for crashes triggered by API calls like CopyMemory. Regardless, not all crashes are recoverable & some, though trappable, will still crash. Facts of life. (If this comment was disrespectful, please report it.)
Update uploaded to include above. Some big changes from what you originally downloaded. Please glance over the QuickLook file & refamiliarize yourself with GPF_Callback as it now requires a parameter to set the property. Short of some other code shortfall, this should be it for awhile. PS Quicklook big cause of embedded bitmap. Probably needs a little code cleanup (i.e., variables no longer used) & remarks updated -- when time permits (If this comment was disrespectful, please report it.)
How is your LaVolpe Custom Windows: Part II & III doing? we're still anxious and there was not much heard about it? (If this comment was disrespectful, please report it.)
^...Not to mention mine! Ah well, we're all (You, LaVolpe and Me) are in the top 3 - prizes all around! I'll shout you a drink in 2 years when I turn 18 ;).
- Dean (If this comment was disrespectful, please report it.)
real minor update for sample project only, not the DLL. Added example of appending custom menu item to the system menu & test for user-clicks. (If this comment was disrespectful, please report it.)
To all. I am no longer supporting this project. There is nothing wrong with it (to the best of my knowledge). However, recent collaboration with Paul Caton and seeing what he is accomplishing thru his newest thunks, I am now a convert -- thunking is the way to go IMO. (If this comment was disrespectful, please report it.)
To be very honest, I've just opened this because it says "By: LaVolpe". So it MUST be good stuff, and i'm not disapointed! Dude as always, good work! 5 globes! (If this comment was disrespectful, please report it.)
I'm not sure what is causing this problem in my program, but I think it has something to do with your DLL. Whenever I restore my window (of my program) from maximized, it loses ALL skinning from Windows XP i.e. the title bar and stuff all lose their XP skinning. Do you have any idea what this might be? (If this comment was disrespectful, please report it.)
sorry - it's not just when I restore from maximized. It just seems to happen randomly during resizes. But it also happens EVERY time I use the 'restore' button on the title bar. (If this comment was disrespectful, please report it.)
it seems to happen whenever the forum tries to become smaller that 1200ish pixels (about 18,000 twips) wide or 575 pixels high, but I think now that it is some other code. Sorry for the bother. (If this comment was disrespectful, please report it.)
Is this class capable of sublassing other programs, or only the project that is referencing and using it's code? (If this comment was disrespectful, please report it.)
This DLL is only capable of subclassing a window within the project using the DLL. This DLL does not attempt to nor is it capable of subclassing other programs. (If this comment was disrespectful, please report it.)
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3/11/2005 10:42:05 PM: 
