lolhax - Trick window into activate

#include <Windows.h>
#include <iostream>

void SetVisible(HWND WindowHWND, bool WindowVisible) {

    int WindowState = 0;
    if (WindowVisible == true) {
        WindowState = SW_SHOW;
    }
    else {
        WindowState = SW_HIDE;
    }

    ShowWindowAsync(WindowHWND, WindowState);
}

bool CheckArg(const char* ArgumentName, int CurrentIndex, int Expected, int TotalArguments, char** Arguments) {
    return (_strcmpi(Arguments[CurrentIndex], ArgumentName) == 0 && ((CurrentIndex + Expected) < TotalArguments));
}

int main(int argc, char** argv)
{

    char* ClassName = nullptr;
    char* Caption = nullptr;
    int KeyCode = 0;

    if (argc == 1) {
        std::cout << "No arguments specified!\r\n\r\n";
        std::cout << "/classname ""Window Classname""\r\n";
        std::cout << "/caption ""Window Caption""\r\n";
        std::cout << "/simulatekey 0xKeyCode - ie ESC=0x1B\r\n";
        return 1;
    }
    else {

        for (int i = 1; i < argc; i++) {

            if (CheckArg("/classname", i, 1, argc, argv)) {
                ClassName = argv[++i];
                continue;
            } else if (CheckArg("/caption", i, 1, argc, argv)) {
                Caption = argv[++i];
                continue;
            }
            else if (CheckArg("/simulatekey", i, 1, argc, argv)) {
                KeyCode = strtol(argv[++i], NULL, 16);
                continue;
            }

        }
    }

    HWND TargetHWND = FindWindowA(ClassName, Caption);

    if (TargetHWND != nullptr) {
        printf("Target Window: 0x%p\r\n", TargetHWND);
        SetVisible(TargetHWND, false);
        SetVisible(TargetHWND, true);

        if (KeyCode != 0) {
            //Simulate pressing ESC
            printf("Simulating keypress\r\n");
            SendMessage(TargetHWND, WM_KEYDOWN, KeyCode, 0);
            SendMessage(TargetHWND, WM_KEYUP, KeyCode, 0);
        }
    }
    else {
        printf("Unable to find window - classname: %s, caption: %s", ClassName, Caption);
    }

    return 0;
}