Simulate multimedia key presses in Delphi -

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I should use multimedia keys (like play / pause, back / next track, rewards / forward, etc.) ) In Delphi, I can easily simulate the 'normal' key using the next code: 

  keybd_event (VK_SPACE, 0, 0, 0); Keybd_event (VK_SPACE, 0, KEYEVENTF_KEYUP, 0);   
 In addition, I have found a list of Mac / BREAK codes, but what should I do with them?  
 MSDN says:  
  VOID keybd_event (BYTE bVk, // virtual key code byte bScan, // hardware scan code DWORD dwFlags, // flags different function options DWORD dwExtraInfo to specify / data associated with additional string;); BBCK - The virtual-key code specifies that the code must have a value in the range of 1 to 254. BScan specifies a hardware scan code for the key - DwFlags - A set of flag bits which specifies the different aspects of the function operation. An application can use any combination of the following predefined constant values ​​to set the flag: KEYEVENTF_EXTENDEDKEY - If specified, the scan code was first by the prefix byte with the value 0xE0 (224). If KEYEVENTF_KEYUP is specified, the key is being issued. If not specified, the key is disappointed DwExtraInfo - specifies an additional 32-bit value associated with the key stroke.   
 I've found the scan code for the volume up:  
 
 code: E0, 32 break code: E0, F0, 32  < / Blockquote> 
 I tried:  
  keybd_event (0, $ 32, KEYEVENTF_EXTENDEDKEY, 0); Keybd_event (0, $ 32, KEYEVENTF_EXTENDEDKEY or KEYEVENTF_KEYUP, 0);   
 But with no luck (it should emulate E32 32, without F 0). Apart from this, MSDN says that Biwek should be [1..254], and I used 0 because I did not find anything suitable in the main code list.  
  
 
 
 This works for me in Delphi X3:  
  Keybd_event (VK_VOLUME_UP {$ AF}, 0, 0, 0); Keybd_event (VK_VOLUME_UP, 0, keyEventFKKUUUP, 0);   
 If these constants are not declared in your Delphi version,

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