Pass a global variable from a dll to a exe??

[em07189]

HI everyone!

How can i pass a global variable from dll project to a exe file, after this i want to run the exe also from the dll.

How can i do this?

thanks.

[Shaggy Hiker]

You're going to have to explain that a bit better. If a variable is truly global, then you don't need to pass it anywhere. Therefore, I would assume that you mean that the variable is global to the dll, which I would expect means that you have it declared as Public in a module. If that is not the case, then this answer doesn't apply:

You can access a public variable in a public module of a dll with something like
<dll name><module name><variable name>

In fact, you probably don't need the module name. However, you could also make the variable private and provide a method in the dll that returns the variable.

As for the bit about running the exe from the dll: What does that even mean?

[em07189]

Hi!

The dll and exe are individual seprated and compiled application's .

i need to pass a variable from a dll application to a exe application, hope you understand what i want here.

thanks

You're going to have to explain that a bit better. If a variable is truly global, then you don't need to pass it anywhere. Therefore, I would assume that you mean that the variable is global to the dll, which I would expect means that you have it declared as Public in a module. If that is not the case, then this answer doesn't apply:

You can access a public variable in a public module of a dll with something like
<dll name><module name><variable name>

In fact, you probably don't need the module name. However, you could also make the variable private and provide a method in the dll that returns the variable.

As for the bit about running the exe from the dll: What does that even mean?

[em07189]

anyone?

[ckennedy79]

How secure does this need to be? Does the dll actually execute the executable, or is that a seperate process? If it doesn't need to be very secure, and if the dll exec's the executable, can you pass it as a command line parameter?

[Grimfort]

There is no such thing as a dll application. A dll is loaded by a .exe

Your post still does not make sense. They are seperate files on disk yes, but how do you want them to communicate. Does the .exe load the .dll ? Is the .dll loaded by another .exe and you want to pass info to a running .exe or start a new copy of the .exe?

If you want to pass data to an existing .exe, it needs to know how to accept it. You can't just pass data into something else that is running and expect it to deal with it.
If you are starting a new .exe then go for passing in command parameters.

[em07189]

HI!

Yes the dll executes the exe.
How do i pass it as a command line parameter?
what is the code to execute the exe from the dll?

How secure does this need to be? Does the dll actually execute the executable, or is that a seperate process? If it doesn't need to be very secure, and if the dll exec's the executable, can you pass it as a command line parameter?

[Grimfort]

What you want to use is the Process class, and there is an example of how to use it here

[em07189]

about command line parameter? what do i have to do?

can someone give-me a example code?

What you want to use is the Process class, and there is an example of how to use it here

[Grimfort]

You can see an example of the parameters in that link:

startInfo.Arguments = "www.northwindtraders.com"

You would need something like this:

startInfo.Arguments = "/MyInfo=" & MyDataString

Then in your other app, you can read the arguments using the example shown here