Hi. Sorry for my English. I have problem with DosBox.

I load Borland Pascal 7.0 (programming language program). Windows 7 64 bit. USB-mouse.
When I load this, all works, all are good. I load my program code from compilator. My code work with graphic resulution and mouse support. All work, all are good.
Then, I close my program, and automatically have returned to Pascal compilator. And then I have problems. Mouse cursor is watched, this moved normally, but not work any mouse button. USB keyboard work normally.
Then, I try recompile this program - all work (mouse also now work), but then, if I have been returned to compilator - now mouse did not work. Only cursor moving, but buttons did not work.

And interested bug in this moment: keyboard worked. I can use my Pascal without mouse until program lauching. If I press Ctrl+F9 (in pascal this is program compile) - dos box has been crached. But if I will load this function not with this key combination, but with Alt+R (menu "Run" lauching, and then press Enter (Ctrl+F9 analog)) - all works normally.
I would have thought that the problem in my program, but this bug is not permanent - 50 to 50 without my code changes. In Windows XP by default DOS all work normally.

Conclusion: dos box contain a bug with mouse cursor returning from graphic resolution to text mode (80x25). And Ctrl+F9 combination cannot work after this bug. Full Screen and window screen. All video outputs in DosBox I have tested. Also tested resulutions 640x480, 800x600, 1024x768, 1280x1024. Mouse driver - not loaded, used from Windows. Maybe need to reset the viewport for mouse pointer after videomode changes.