How to set a Data Breakpoint, to break when EAX Register is set to a particular value

There is a article in MSDN which provides the procedure: http://msdn.microsoft.com/en-us/library/aa295838(VS.60).aspx#_core_setting_a_breakpoint_when_a_register_expression_is_true

But it seems that i tis for visual studio 6 ... Actually I can not find the "Breakpoint" entry under "Edit" Menu...

Do you know how to do that? I want to break when EAX changes to an error code so I can find the place where this error is开发者_开发百科 returned.

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Assuming you are using Visual Studio 2008, you can find it in its own Debug menu.

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You need to create a breakpoint. In the Breakpoint Windows ( Debug->Windows->Breakpoint ) right-click the BP and select condition.

In the condition-field you can just type the expression ( "eax == ebx" ).

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Just to be explicit about what @DarthCoder said:

1. First create a plain breakpoint, so there's something to edit
2. Then Debug->Windows->Breakpoint brings up the list of breakpoints, including the one you just made
3. Right-click on the breakpoint, pick "Condition"
4. Enter the condition, such as eax==ebx