How To Use Dr0,..,Dr7 In VB ?

[Sh4DoVV]

Hi Friends

How To Use Register Of Dr0,..,Dr7 In Visual Basic And Set Hardware BreakPoint ?

Thanks

[Aguila]

Same as in any other language with SetThreadContext:

Declare Function SetThreadContext Lib "kernel32.dll" _
                 Alias "SetThreadContext" ( _
                 ByVal hThread As Long, _
                 lpContext As CONTEXT) As Long

Public Type CONTEXT86
    ContextFlags As Long
    Dr0 As Long
    Dr1 As Long
    Dr2 As Long
    Dr3 As Long
    Dr6 As Long
    Dr7 As Long
    FloatSave As FLOATING_SAVE_AREA
    SegGs As Long
    SegFs As Long
    SegEs As Long
    SegDs As Long
    Edi As Long
    Esi As Long
    Ebx As Long
    Edx As Long
    Ecx As Long
    Eax As Long
    Ebp As Long
    Eip As Long
    SegCs As Long
    EFlags As Long
    Esp As Long
    SegSs As Long
End Type

[metr0]

But do not use this API on a running thread (e.g. the current), suspend it first. Dependent on VB's way to process exception you could give modifying the CONTEXT pointer in an exception handler a try.

[Sh4DoVV]

May Attach An Example That Used Of Dr0..Dr7 ?

[ahmadmansoor]

May Attach An Example That Used Of Dr0..Dr7 ?

yes pls if that possible .....