delphi 控制音量 静音的类
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delphi 控制音量 静音的类
unit ttSound; interface uses winapi.windows, winapi.Messages; type SimpleSoundControl = class class procedure Mute(); static; class procedure VolumeUp(); static; class procedure VolumeDown(); static; end; implementation { SimpleSoundControl } class procedure SimpleSoundControl.Mute; begin keybd_event(VK_VOLUME_MUTE, MapVirtualKey(VK_VOLUME_MUTE, 0), KEYEVENTF_EXTENDEDKEY, 0); keybd_event(VK_VOLUME_MUTE, MapVirtualKey(VK_VOLUME_MUTE, 0), KEYEVENTF_EXTENDEDKEY or KEYEVENTF_KEYUP, 0); end; class procedure SimpleSoundControl.VolumeDown; begin keybd_event(VK_VOLUME_DOWN, MapVirtualKey(VK_VOLUME_DOWN, 0), KEYEVENTF_EXTENDEDKEY, 0); keybd_event(VK_VOLUME_DOWN, MapVirtualKey(VK_VOLUME_DOWN, 0), KEYEVENTF_EXTENDEDKEY or KEYEVENTF_KEYUP, 0); end; class procedure SimpleSoundControl.VolumeUp; begin keybd_event(VK_VOLUME_UP, MapVirtualKey(VK_VOLUME_UP, 0), KEYEVENTF_EXTENDEDKEY, 0); keybd_event(VK_VOLUME_UP, MapVirtualKey(VK_VOLUME_UP, 0), KEYEVENTF_EXTENDEDKEY or KEYEVENTF_KEYUP, 0); end; end.
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