如何使用Directinput模拟Keypress事件？ [英] How Can I Simulate A Keypress Event Using Directinput?

问题描述

我想创建一个程序，要求用户输入一个数字。然后我会写一个if else语句，如if（num == 2）{按右箭头键} else {按左箭头键}。



现在，我在网上做了一点研究，发现了很多有用的链接。其中一个是http://www.codeproject.com/Articles/6819/SendKeys-in-C。文章解释了使用keybd_event（）函数进行模拟（ALT + TAB）按键。我试着去做，但什么也没发生。我最后会添加我的代码。



另一篇文章解释了sendinput（）的使用，这看起来很复杂。现在，有人可以解释一下我怎么能以简单的方式做到这一点？我真的不想让事情复杂化，因为我没有太多的事情要做。我只需要知道如何使用用户输入的值来模拟箭头键（RIGHT / LEFT / UP / DOWN）。谢谢。



以下是我试图模拟ALT + TAB键的代码，如上面链接的文章所述，但没有发生任何事情。我想知道我犯了什么错误，因为我对这个keybd_event（）函数非常愚蠢。

I want to create a program where the user is asked to enter a number. Then i shall write a if else statement such as if(num ==2) { press the right arrow key} else {press the left arrow key}.

Now, i did a little research online and found a lot of useful links. One of them was http://www.codeproject.com/Articles/6819/SendKeys-in-C. The article explained the use of keybd_event() function for simulating (ALT+TAB) key press. I tried to do it but nothing happened. I shall add my code in the end.

Another article explained the use of sendinput() which sort of seems complicated. Now, can someone please explain me how can i do it in a simple way? I really don't want to complicate things as i don't have much things to do with it. I just need to know how to simulate the arrow keys(RIGHT/LEFT/UP/DOWN) using values entered by the user. Thanks.

Following is the code that i tried to simulate the ALT+TAB key as explained in the above linked article but nothing really happened. I wonder where i made the mistake as i am really dumb with this keybd_event() function and stuff.

#include <iostream>
#include <Windows.h>
using namespace std;

int main()
{
    int x;

    cout<<"Enter the value of x"<<endl;
    cin>>x;

    if (x==2)
        {
            keybd_event(VK_MENU, 0, 0, 0);//press down the ALT key
            keybd_event(VK_TAB, 0, 0, 0); //press down the TAB key
        }

        system("pause");

    }

推荐答案

首先，这不是DirectInput;这是Windows API。

其次， keybd_event 已被 SendInput 取代： http://msdn.microsoft.com/en-us/ library / windows / desktop / ms646310％28v = vs.85％29.aspx [ ^ ]。



完美无缺，只需阅读仔细描述并为功能提供足够的输入。

-SA

First of all, this is not DirectInput; this is Windows API.
Secondly, keybd_event has been superseded by SendInput: http://msdn.microsoft.com/en-us/library/windows/desktop/ms646310%28v=vs.85%29.aspx[^].

It works perfectly, just read the description carefully and provide sufficient input to the function.

—SA

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