从C ++的MIDI设备获取ID [英] Get ID from MIDI devices in C++

问题描述

我既是音乐家又是程序员，并且想创建自己的程序来制作音乐. 在制作GUI之前，我将从C ++中的控制台应用程序开始.

I'm a musician and a programmer and would like to create my own program to make music. I'll start with a console application in C++ before I make a GUI.

我是C/C ++的新手，并且知道如何制作基本的控制台应用程序，并已阅读有关Win32 API的信息.

I'm quiet new to C/C++ and know how to make a basic console application and have read about the Win32 API.

我正在研究Win32应用程序中用于多媒体的MSDN，但发现了很多MIDI功能: http://msdn.microsoft.com/en-us/library/dd798495(VS.85).aspx

I was looking into MSDN for multimedia in Win32 applications and I found a lot of functions for MIDI: http://msdn.microsoft.com/en-us/library/dd798495(VS.85).aspx

我可以通过这种方式接收到多少MIDI设备:

I can receive how many MIDI devices are plugged in this way:

#include <windows.h>
#include <iostream>
using namespace std;
int main() {
    cout << midiInGetNumDevs();
    cout << " MIDI devices connected" << endl;
    return 0;
}

但是现在我想用我认为的midiInGetID函数和while循环来查找这些设备的调用方式.有人可以帮我吗?该函数需要一个HMIDIIN参数，而且由于几乎所有MIDI函数都使用此参数，因此我不知道该如何获取.

But now i want to find out how these devices are called, with the midiInGetID function I think and a while loop. Can somebody help me with this? The function requires a HMIDIIN parameter and I don't know how I can get one since almost all the MIDI functions use this parameter.

我知道这不是最明显的话题，但是如果有人可以帮助我，那就太好了.

I know this is not the most obvious topic but it would be great if someone could help me.

谢谢:)

推荐答案

要获取信息，请循环调用 MIDIINCAPS 结构(您通过调用该函数时指向该结构的指针)以及有关第N个设备的信息.要打开设备并填充其他呼叫所需的HMIDIIN，请致电

To get information, you loop calling midiInGetDevCaps, with a first parameter varying from 0 included to the result of midiInGetNumDevs excluded. Each call fills a MIDIINCAPS struct (you pass a pointer to the struct when you call the function) with information about the Nth device. To open a device, and fill the HMIDIIN needed for other calls, you call midiInOpen with the device number (again, 0 to N-1 included) as the second parameter.

除了输出名称用Out代替In(对于结构OUT代替IN)之外，相同的概念也适用于输出设备.

The same concept applies to output devices, except that the names have Out instead of In (and for the structures OUT instead of IN).

这篇关于从C ++的MIDI设备获取ID的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！