Why isn't this working.
#incude <stdio.h>
#include <windows.h>
int main() {
int len = 255;
char cName[255];
GetComputerName(cName, &len);
return 0;
}
WHy wont simple api compile ?
Why isn't this working.
#incude <stdio.h>
#include <windows.h>
int main() {
int len = 255;
char cName[255];
GetComputerName(cName, &len);
return 0;
}
WHy wont simple api compile ?
What kind of project did you start?
Windows apps usually have a WinMain not main.
Also you have incorrectly allocated the buffer length. Forgot the '\0' will be added after the name.
Okay Here is whats up.
Im using a Windows Console program. (not a problem)
Here is my code.
#include <windows.h>
#include <stdio.h>
int main() {
char *cName;
int len = 55;
if(GetComputerName(cName, &len)) {
printf("Computer Name: %s",cName);
} else {
printf("Error");
exit(1);
}
return 0;
}
Here is the error.
--------------------Configuration: test - Win32 Debug--------------------
Compiling...
test.cpp
c:\crap\test\test.cpp(13) : error C2664: 'GetComputerNameA' : cannot convert parameter 2 from 'int *' to 'unsigned long *'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
Error executing cl.exe.
NOTE: I have also tried unsigned long len;
Did not work either.
Thanks
test.obj - 1 error(s), 0 warning(s)
2 Errors... 1 east to solve, 1 nastier runtime errorCode:#include <windows.h> #include <stdio.h> int main() { char cName[MAX_COMPUTERNAME_LENGTH + 1]; //need to allocate space DWORD len = 55;//needs DWORD if(GetComputerName(cName, &len) != 0) { printf("Computer Name: %s",cName); } else { printf("Error"); exit(1); } return 0; }
1. As per compiler warning you need to send the address of an unsigned long (DWORD) instead of an int.....
2. You sent a pointer that did not point to enough space to hold the returned computer name.
