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Forum posts for dwm.exe

F12 not working in Delphi debugger on Windows 7/8

Pressing F12 while the program is running in the debugger should break the execution and open the debugger. This works correctly on Windows XP (tested with D2007 and XE2) but fails on Windows 7 and 8 (also tested with D2007 and XE2; tested on three computers).

Registry is set up properly (Windows 7):

[HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionAeDebug]
'UserDebuggerHotKey'=dword:00000000
'Debugger'=''C:Windowssystem32vsjitdebugger.exe' -p %ld -e %ld'

[HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionAeDebugAutoExclusionList]
'DWM.exe'=dword:00000001

The XP installation also sets 'Auto'='1' and omits the AutoExclusionList but duplicating those changes on the Windows 7 machine accomplishes nothing.

The weird thing is that Delphi seems to be aware of the F12 being pressed. When I run a program in a debugger on a Windows 7 machine and press F12, Event Log window in Delphi shows

Thread Start: Thread ID: 4080. Process Project73.exe (7108)

Thread Exit: Thread ID: 4080. Process Project73.exe (7108)

It's just that the breakpoint is not triggered and application keeps running.

Does anybody know how to restore this functionality in Windows 7/8?

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