win32 app toolbar icon are not loading

mtiwari · 22 May 2014

Hi,
I have a win32 MFC application where in for this app for one dialog i am loading a toolbar and placing icons on top of toolbar. Very first time when i open this dialog icons are shown properly but after closing this dialog and reopening it again either no icon comes or some different icons comes but expected icons are not coming. this issue is only happening on Windows 7 x64 ultimate.

On windows xp every thing runs smoothly.

please suggest what could be the cause.

One intresting thing is if I right click on my app/exe and set compatibility mode windows xp sp3 then everything works perfectly but application performance decresed(e.g launching app, switch moduled inside application etc.)

Mr Davo · 23 May 2014

Sounds like the software you are using is not compatible with Windows 7 x64. You could try the software on Windows 7 x32 to check whether the issue springs from the fact that you are now using a 64 Bit Operating System, but ultimately I doubt that you would want to downgrade to Windows 7 x32 just for one program. The fact that the program runs in compatibility mode is another good indicator that the program has compatibility issues. For your own interest you could try other compatibility modes (such as Windows 2000) to see if performance improves.

mtiwari · 26 May 2014

Hello Davo,
Thanks for the response. Yes we did a test on Windows 7 x32 and it was working perfectly.
Even it is working with many Windows 7 x64 bit machine(for example my desktop which is also Windows 7 x64 Enterprise edition).

We have observed this issue in one of our test machine which is a Windows 7 x64 Ultimate edition.

One more intresting thing I observed yesterday,
1. log-in to Windows 7 x64 Ultimate machine physicially.
2. launch the exe and then launch the dialog where icons are missing on the toolbar.
3. now without closing the exe and dialog lock the screen.
4. Do a remote desktop from other machine to earlier used Windows 7 x64 Ultimate where exe and dialog running.
5. we observed that when we do remote desktop Icons are visible properly.
6. Now close the remote desktop connection without closing the exe and dialog.
7. Come back to the same earlier used Windows 7 x64 and unloack it physically.
8. We observed that now Icons are visible properly.

Any suggestion why is it so?

Also will there be a possibility of hardware dependecy related issue?

Mr Davo · 26 May 2014

Hi,

Yes, it is definitely starting to sound like a hardware issue. I believe this to be the case for two reasons -

Windows 7 Ultimate has all of the features (and more) of Windows 7 Enterprise (e.g.: it has Domain access, plus extra content through Windows Update)
The software that your having an issue with appears to work ok through RDP

I would now check the graphics card on the offending computer (start by updating drivers [assuming that updates are available], consider increasing the graphics memory - through the BIOS - if your using integrated (on motherboard) graphics, and all else failing try a new graphics card).

I hope that you get to the bottom of the issue, it sounds like the malfunctioning program is of great importance to you.

Kind Regards,

Davo