Question

64 bit compatability with VC6.0

Asked by: job_s

hi Everybody,

How can I enable the 64 bit OS compatability in VC6.0 applications?
My application is not running on 64 bit OS. it is not loading at all.

I tried with depends.exe to check the dependency, but depends also not working its giving error like failed to create empty document. My application needs to be run on 64 bit pre installation environment (WinPE), This os will be loaded from CD and there wont be any writable harddisk :(.

Thanks
Jobs

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Asked On
2005-08-21 at 22:56:43ID21534916
Tags

create

,

empty

Topic

Microsoft Visual C++.Net

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2
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Answers

 

by: AlexFMPosted on 2005-08-22 at 01:04:14ID: 14722426

VC++ 6.0 doesn't support 64 bits. 64-bits OS must run 32-bits application creating 32-bits environment for it. Possibly this is some target OS problem. Can you run other 32-bits applications on it?

 

by: lakshman_cePosted on 2005-08-26 at 08:53:14ID: 14762012

Set the /Wp64 switch for testing the 64 bit compatibility.

/Wp64 detects 64-bit portability problems on types that are also marked with the __w64 keyword. /Wp64 is off by default in the Visual C++ 32-bit compiler and on by default in the Visual C++ 64-bit compiler.

Variables of the following types are tested on a 32-bit operating system as if they were 64 bits:

int
long
pointer
To set this compiler option in the Visual Studio development environment

Open the project's Property Pages dialog box. For details, see Setting Visual C++ Project Properties.
Click the C/C++ folder.
Click the General property page.
Modify the Detect 64-bit Portability Issues property

 

by: job_sPosted on 2005-08-29 at 08:03:36ID: 14776449

/Wp64 will not be recognized by the VC6.0. I installed the VS 2005 beta and it supports everything. I wana close this question.

 

by: AlexFMPosted on 2005-08-29 at 10:43:00ID: 14777655

The fact that VC++ 6.0 compiler doesn't support 64 bits is not reason to close the question.

 

by: lakshman_cePosted on 2005-08-29 at 18:48:18ID: 14780856

I agree that my comment corresponded to the visual C++ 7.0 irrespective of the question being specific to Visual Studio 6.0. Probably, I did this as this question was posted in Visual C++.NET section.

Anyway my answer to the question is about setting the related switch in Visual Studio(.NET) for checking 64 bit compatibility. If that has helped you, this question should not be closed.

20120131-EE-VQP-002

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