I have two window programs. Not console.

I run my first window exe. In first exe i have big binary data. Its 100 float values.
My first exe through CreateProcess launch another window exe.

I want pass big 100 float values or address this data to second exe.
And second exe using this 100 float values and change these values.
It's possible ?

And how to do it right ?

I know one way. Its use dll and send address to dll function.

You can use shared memory for that with proper synchronization. CreateFileMapping and MapViewOfFile is the point to start. Using sockets or pipes is also a way to go, and may even be a simpler solution depending on the task and the usage pattern.

I guess you know that but I’ll write it, just in case. Note that addresses are only meaningful within a process. Copying address value to another process has no sense.

DimonSoft thanks !

Windows its somthing !

Instead of one variable in CreateProcess, write two win api functions ! Hardcore !