multi threading

[mahdisheida66]

hi all
i want to do part of project with multi threading in c++
but dont know ,how pass multi argument to thread in win 32
for example in this code

myhandle = CreateThread(0, 0, mythread, 0, 0, &mythreadid);

Thanks for your help!

[vorticidal]

You could use a global variable to pass information to each individual thread. Each thread has its own ID number, so you can command each of them to do something else.

[kbw]

You should put all your args into a struct and pass the address of the struct. Whatever you do, don't use global variables.

And if you're using C or C++, don't use CreateThread on Windows, use _beginthreadex.

[mahdisheida66]

thank u
i want to pass a 2d dynamin alloc matrix to the thread without classes
but i dont know ,how do it with struct?
could anyone help me?

[kbw]

You'll need to provide specific declarations if you want specific help.

Windows questions should really be in the Windows Programming section.

[mahdisheida66]

hi
thanks again
my problem solved

this example code:
struct myStruct{
int * val1;
IplImage *img;
float **val2;
};

myStruct sItem;

sItem.val2=(float **)malloc(2*sizeof(float*));
for( int i = 0; i < 2; i++ )
sItem.val2[i]=(float *) malloc(50*sizeof(float));

[kbw]

unsigned id;
HANDLE hThread = (HANDLE)_beginthreadex(0, 0, ThreadFunc, &sItem, 0, &id);