Thanks for the reply.
I have a Zorro S license. I am able to compile and run the Process.c program from NotePad++, I can get the zOpen api to work in C program when editing and running in Zorro GUI, but not a C++ program when editing and running from visual studio.
.
I think the zInit call is running fine, otherwise, the application would print a different error message.
if(!zInit(2,sizeof(int))) {
printf("Can't initialize communication!"); return EXIT_FAILURE;
}
The problem happens when I tried to build the ZorroControl cpp program. Here is the code I used. The program prints "handle=00000000"
The zInit, zData and zClose API seems to work fine. but zOpen returns 0 in the C++ program.
#include "stdafx.h"
#include "ZorroControl.h"
int _tmain(int argc, _TCHAR* argv[])
{
// open ZorroControl.dll and get its function pointers
HINSTANCE H = LoadLibrary(TEXT("ZorroControl.dll"));
if(!H) {
printf("Can't mount ZorroControl.dll!"); return EXIT_FAILURE;
}
_zInit zInit = (_zInit)GetProcAddress(H,"zInit");
_zOpen zOpen = (_zOpen)GetProcAddress(H,"zOpen");
_zClose zClose = (_zClose)GetProcAddress(H,"zClose");
_zStatus zStatus = (_zStatus)GetProcAddress(H,"zStatus");
_zData zData = (_zData)GetProcAddress(H,"zData");
// initialize process communication
if(!zInit(2,sizeof(int))) {
printf("Can't initialize communication!"); return EXIT_FAILURE;
}
// get and clear the data area
int* Info = (int*)zData(1);
*Info = 0;
HANDLE open = zOpen(2, "-w 320");
printf("handle=%p\n", open);
// display it and quit
printf("Zorro returned %i\n",*Info);
zClose(2);
Sleep(1000);
return EXIT_SUCCESS;
}
Perhaps I'm missing something trivial. Is it related to how I loaded the ZorroControl.dll in C++ program? That seems to be the only difference between the Process.C and ZorroControl.
