Win32的 - 迷笛与MCISendString循环 [英] Win32 - Midi looping with MCISendString

问题描述

我在做一个游戏，我使用MIDI文件的背景音乐。下面是我目前使用的code：

I'm making a game, and I'm using midi files for the background music. Here's the code I'm currently using:

void Game::play_music()
{
    // Start the music:
    if(map.levelnumber % 2 == 0)
    {
        mciSendString(L"open MUSIC01.MID type sequencer alias Music1", NULL, 0, NULL);
        mciSendString(L"play Music1", NULL, 0, NULL);
        playing = "Music1";
    } else {
        mciSendString(L"open MUSIC02.MID type sequencer alias Music2", NULL, 0, NULL);
        mciSendString(L"play Music2", NULL, 0, NULL);
        playing = "Music2";
    }
}

这个伟大的工程，但它只有一次通过播放歌曲。我试图循环它通过增加回头客，在MCI播放命令，但后来根本不玩什么。哪能循环的音乐？

This works great, except it only plays the song once through. I tried to loop it by adding "repeat" in the mci play command, but then it doesn't play anything at all. How can I loop the music?

推荐答案

我看了一下MSDN上的多媒体命令字符串参考，并发现了

I looked at the multimedia command string reference on MSDN and found out that

TCHAR tch[100];
mciSendString("status [alias] mode", tch, 100, NULL);

将投入是否【别名】正在播放或停止为TCH。如果它停了，我只是用了求[别名]启动命令来重新加载MIDI文件。我应该指出，这会导致延迟，而东西是计算或任何 - 所以，如果你不把它放进一个单独的线程程序将冻结

will put whether [alias] is playing or stopped into "tch". If it's stopped, I just use the "seek [alias] to start" command to reload the midi file. I should mention that this causes a delay while stuff is computing or whatever - so your program will freeze if you don't put this in a separate thread.

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