user32!IsWindow crash
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Hello everyone, I meet a crash problem. just as following, I donot know why IsWindow will crash, Is there anyone meet the same problem? AULTING_IP: user32!IsWindow+1a 761a7150 8365fc00 and dword ptr [ebp-4],0 EXCEPTION_RECORD: ffffffff -- (.exr 0xffffffffffffffff) ExceptionAddress: 761a7150 (user32!IsWindow+0x0000001a) ExceptionCode: c0000005 (Access violation) ExceptionFlags: 00000000 NumberParameters: 2 Parameter[0]: 00000001 Parameter[1]: fffffffc Attempt to write to address fffffffc ChildEBP RetAddr Args to Child 06f9ff48 72d229bb 04e73a50 6928d287 00000000 user32!IsWindow+0x1a 06f9ff80 72d22a47 00000000 7710338a 04e74990 msvcr80!_callthreadstartex+0x1b [f:\sp\vctools\crt_bld\self_x86\crt\src\threadex.c @ 348] 06f9ff88 7710338a 04e74990 06f9ffd4 776b9f72 msvcr80!_threadstartex+0x66 [f:\sp\vctools\crt_bld\self_x86\crt\src\threadex.c @ 326] 06f9ff94 776b9f72 04e74990 70af11ab 00000000 kernel32!BaseThreadInitThunk+0xe 06f9ffd4 776b9f45 72d229e1 04e74990 00000000 ntdll!__RtlUserThreadStart+0x70 06f9ffec 00000000 72d229e1 04e74990 00000000 ntdll!_RtlUserThreadStart+0x1b
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Hello everyone, I meet a crash problem. just as following, I donot know why IsWindow will crash, Is there anyone meet the same problem? AULTING_IP: user32!IsWindow+1a 761a7150 8365fc00 and dword ptr [ebp-4],0 EXCEPTION_RECORD: ffffffff -- (.exr 0xffffffffffffffff) ExceptionAddress: 761a7150 (user32!IsWindow+0x0000001a) ExceptionCode: c0000005 (Access violation) ExceptionFlags: 00000000 NumberParameters: 2 Parameter[0]: 00000001 Parameter[1]: fffffffc Attempt to write to address fffffffc ChildEBP RetAddr Args to Child 06f9ff48 72d229bb 04e73a50 6928d287 00000000 user32!IsWindow+0x1a 06f9ff80 72d22a47 00000000 7710338a 04e74990 msvcr80!_callthreadstartex+0x1b [f:\sp\vctools\crt_bld\self_x86\crt\src\threadex.c @ 348] 06f9ff88 7710338a 04e74990 06f9ffd4 776b9f72 msvcr80!_threadstartex+0x66 [f:\sp\vctools\crt_bld\self_x86\crt\src\threadex.c @ 326] 06f9ff94 776b9f72 04e74990 70af11ab 00000000 kernel32!BaseThreadInitThunk+0xe 06f9ffd4 776b9f45 72d229e1 04e74990 00000000 ntdll!__RtlUserThreadStart+0x70 06f9ffec 00000000 72d229e1 04e74990 00000000 ntdll!_RtlUserThreadStart+0x1b
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Hello everyone, I meet a crash problem. just as following, I donot know why IsWindow will crash, Is there anyone meet the same problem? AULTING_IP: user32!IsWindow+1a 761a7150 8365fc00 and dword ptr [ebp-4],0 EXCEPTION_RECORD: ffffffff -- (.exr 0xffffffffffffffff) ExceptionAddress: 761a7150 (user32!IsWindow+0x0000001a) ExceptionCode: c0000005 (Access violation) ExceptionFlags: 00000000 NumberParameters: 2 Parameter[0]: 00000001 Parameter[1]: fffffffc Attempt to write to address fffffffc ChildEBP RetAddr Args to Child 06f9ff48 72d229bb 04e73a50 6928d287 00000000 user32!IsWindow+0x1a 06f9ff80 72d22a47 00000000 7710338a 04e74990 msvcr80!_callthreadstartex+0x1b [f:\sp\vctools\crt_bld\self_x86\crt\src\threadex.c @ 348] 06f9ff88 7710338a 04e74990 06f9ffd4 776b9f72 msvcr80!_threadstartex+0x66 [f:\sp\vctools\crt_bld\self_x86\crt\src\threadex.c @ 326] 06f9ff94 776b9f72 04e74990 70af11ab 00000000 kernel32!BaseThreadInitThunk+0xe 06f9ffd4 776b9f45 72d229e1 04e74990 00000000 ntdll!__RtlUserThreadStart+0x70 06f9ffec 00000000 72d229e1 04e74990 00000000 ntdll!_RtlUserThreadStart+0x1b
Further questions: - the window handle you feed into IsWindow: is it a handle inside your application or a different window? - is your application running elevated? - is the other application running elevated? - are there differences in 32 vs. 64bit architecture between the applications?