Strings

Introductions

Probably the biggest source of my frustration when working with the Windows API is dealing with strings. There are so many functions and data types used for string comparison, concatenation, and other nonsense. When I run into something I hate and don't want to experience the pain again, I will add it here.

wcsncmp

When working with structures like SYSTEM_PROCESS_INFORMATION we will run into the use of unicode strings when enumerating process image names.

if (wcsncmp(L"Teams.exe", SystemProcInfo->ImageName.Buffer, SystemProcInfo->ImageName.Length / sizeof(WCHAR)) == 0) {
       wprintf(L"Found %\n");
       Instance->targetPID = HandleToULong(SystemProcInfo->UniqueProcessId);
}

Convert Int to string

#include <math.h>
x = 43
char strPID[(int)((ceil(log10(x))+1)*sizeof(char))];
sprintf(strPID, "%d", x);