C++ File Pathing/Executable Help!?

Question

Hi everyone

I need help with launching Java.exe with -Xmx and -Xms parameters, and launching a .Jar file
I have the Batch code for this.. could someone "translate" this into C++?

Batch code

@"%Programfiles%\Java\jre7\bin\java.exe" -Xmx1024M -Xms768M -jar "%Homepath%\Desktop\minecraft.jar"

Here's what I have so far..

void main() {
ShellExecute( NULL, NULL, "%Programfiles%\Java\jre7\bin\java.exe", NULL, NULL, SW_SHOW );
}

Is this correct? And can someone please add the -Xmx, -Xms parameters, and add the .Jar executable?

Answer 1

Use the system command to execute stuff from c++ programs.



http://www.cplusplus.com/reference/clibrary/cstdlib/system/



Make the parameter



@"%Programfiles%\Java\jre7\bin\java.ex… -Xmx1024M -Xms768M -jar "%Homepath%\Desktop\minecraft.jar"



and it should work.



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Answer 2

This isn't really a C++ question - it is a "whatever the hell operating system you are using" question.



Depending on the definition of ShellExecute() you may need to expand the %Programfiles% token to whatever it stands for - or perhaps ShellExecute will do that for you - read the documentation to find out.



Be aware that if you need to use the \ character in a C or C++ string you need to type its as \\ because \ is used to introduce certain escape sequences into strings and thus "\\" represents a single backslash character ...

Answer 3

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