Windows console toggle QUICK_EDIT_MODE

quickedit.cpp

#include <windows.h>
#include <stdio.h>

/*
cl /EHsc /MT /nologo /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_USING_V110_SDK71_" quickedit.cpp
link /OUT:quickedit.exe /MACHINE:X86 /OPT:REF /SAFESEH /ERRORREPORT:PROMPT /NOLOGO /TLBID:1 /SUBSYSTEM:CONSOLE",5.01" quickedit.obj
*/

int main(int argc, char* argv[]) {
    HANDLE hIn;
    DWORD Mode;
    BOOL Ret = TRUE;
    DWORD ErrCode = NOERROR;

    hIn = GetStdHandle(STD_INPUT_HANDLE);
    Ret = GetConsoleMode(hIn, &Mode);

    if (argc == 1) {
        if ((Mode & ENABLE_QUICK_EDIT_MODE) == ENABLE_QUICK_EDIT_MODE) {
            fprintf(stderr, "QuickEdit On\n");
        } else {
            fprintf(stderr, "QuickEdit Off\n");
        }
    } else {
        char* command = argv[1];
        // Convert the first parameter to lowercase
        for (int i = 0; i < strlen(command); ++i) {
            command[i] = tolower(command[i]);
        }
        if (!strcmp(command, "on")) {
            if ((Mode & ENABLE_QUICK_EDIT_MODE) == 0) {
                Ret = SetConsoleMode(hIn, Mode | ENABLE_QUICK_EDIT_MODE);
            }
            if (Ret == FALSE) ErrCode = GetLastError();
        } else if (!strcmp(command, "off")) {
            if ((Mode & ENABLE_QUICK_EDIT_MODE) == ENABLE_QUICK_EDIT_MODE) {
                Ret = SetConsoleMode(hIn, Mode & ~ENABLE_QUICK_EDIT_MODE);
            }
            if (Ret == FALSE) ErrCode = GetLastError();
        } else {
            fprintf(stderr, "Command not found!\nUsage: %s [on|off]\n", argv[0]);
        }
        if (Ret == FALSE && ErrCode != NOERROR) {
            fprintf(stderr, "RET 0x%X - ErrCode 0x%X\n", Ret, ErrCode);
        }
    }

    return 0;
}