Can 64-bit process launch 32-process on 64-bit Windows?

[forester]

CreateProcess() is the API that can start a new process. My question is, in the 64-bit application running on 64-bit Windows, can I use CreateProcess() to launch a 32-bit process? Thanks for help!

[VictorN]

Did you try?

[forester]

I currently have no access to 64-bit Windows, so I can't try it myself.

[VictorN]

I don't have it either!

[Alex F]

Yes, it works.

[Skizmo]

Yes, it works.

Why wouldn't it work ? They are both applications.

[Alex F]

Why wouldn't it work ? They are both applications.

I just answer the question. Did you read it?

[forester]

Thank you for help! I will try CreateProcess() when I have access to 64-bit Windows.

[forester]

Why wouldn't it work ? They are both applications.

CreateProcess() can't launch 64-bit application on 32-bit Windows.

[VictorN]

CreateProcess() can't launch 64-bit application on 32-bit Windows.

Do you mean that 64-bit application can be directly (without using CreateProcess) launched on 32-bit Windows?

[forester]

64-bit application can run on 32-bit Windows, many articles said so.

[Igor Vartanov]

First, your question was "Can 64-bit process launch 32-process on 64-bit Windows?". With the answer "Yes it can". For example, explorer 64 bit (main shell in Win x64) runs 32-bit applications alright. The technology is called WOW64 (Windows-on-Windows). The same way 32-bit Windows are able to run 16-bit apps in WOW. Just because the higher Windows natively implements virtual machine for lower Windows.

Second, regarding "64-bit application can run on 32-bit Windows, many articles said so." Per my understanding (though possibly wrong ) either those articles lie, or you got the point wrong. 64-bit application can run on 32-bit architecture only in virtual machine implementing 64-bit architecture, and there is no such natively implemented in Win32.