How to develop on window and deploy on mac.

Hi,

1) We want to make multi platform applications. I don't know how this works in qt.
I developed a small application using QT creator (free) V4 on windows.
Do i also need download and install QT Mac version on the mac and then compile the my application (that i created on windows) on the mac?
or
Is there any way where i can make the application for mac on my windows machine?

2)We want to use only Windows machine for development and deploy applications on other platforms, even on Symbian phones.
Is it possible?

Please clear my confusions and tell me the way to run my application on mac. (confusion #1)

Thanking You
tarun mishra

There are two issues:
1. Development.
2. Deployment.

If you stick to pure Qt and ANSI C++, you can develop on any platform which is supported by Qt.

If you want to deploy binaries, then you will have to compile your code on the target system, or use a cross compiler to the target system.

So , Can it be the solution:
1) Download qt for mac and install on mac
2) Compile my existing application (developed on Windows) on mac.

THEN I have one question:
Can Qt open the same project file on mac?

Yes, this is possible, this is what Qt is for.

Qt can open the same project on all platforms it support, if you user the *.pro file.
IDE specific project files will not work.

Please don't mail such questions, but post them here.