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sendinput    Windows NT/2000/XP: This function has been superseded. Use SendInput instead.

Posted on 2007-11-26
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Last Modified: 2010-04-01
SendInput

Windows NT/2000/XP: This function has been superseded. Use SendInput instead.


I was going to use


VOID keybd_event(      
    BYTE bVk,
    BYTE bScan,
    DWORD dwFlags,
    PTR dwExtraInfo
);




VOID mouse_event(      
    DWORD dwFlags,
    DWORD dx,
    DWORD dy,
    DWORD dwData,
    ULONG_PTR dwExtraInfo
);



but they are superseded by sendinput



however, this page
http://msdn2.microsoft.com/en-us/library/ms646310.aspx


doesn't really explain how to use it.



how do I use sendinput to send keyboard and mouse events?




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Question by:Troudeloup
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22 Comments
 
LVL 86

Assisted Solution

by:jkr
jkr earned 2000 total points
ID: 20352844
'Superseded' in that context does not mean that you cannot use it anymore. In fact it is still supported and easier to use than 'SendInput()'. Take a look at http://www.codeproject.com/cpp/sendkeys_cpp_Article.asp ("SendKeys in C++") which still use that API to simluate VB's SendKeys.
0
 

Author Comment

by:Troudeloup
ID: 20352859
aww

i get it.

for the old ways, can you point me to their page with all the key codes?
0
 
LVL 86

Assisted Solution

by:jkr
jkr earned 2000 total points
ID: 20352886
Sure, that is located at http://www.codeproject.com/system/keyboard.asp ("Keyboard Events Simulation using keybd_event() function")
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Author Comment

by:Troudeloup
ID: 20352893
how about mouse?
0
 

Author Comment

by:Troudeloup
ID: 20352905
make  = press
break  = release?


and where are keys for lower cases chars?
0
 

Author Comment

by:Troudeloup
ID: 20352928
VOID mouse_event(      
    DWORD dwFlags,                  // key actions, such as MOUSEEVENTF_LEFTDOWN
    DWORD dx,                       // screen x
    DWORD dy,                       // screen y
    DWORD dwData,                   // what's this?
    ULONG_PTR dwExtraInfo           // what's this?
);


mouse_event(MOUSEEVENTF_LEFTDOWN,   0, 0, 0, GetMessageExtraInfo()); // Left Key Down
mouse_event(MOUSEEVENTF_LEFTUP,     0, 0, 0, GetMessageExtraInfo()); // Left Key UP
 
mouse_event(MOUSEEVENTF_RIGHTDOWN,  0, 0, 0, GetMessageExtraInfo()); // Right Key Down
mouse_event(MOUSEEVENTF_RIGHTUP,    0, 0, 0, GetMessageExtraInfo()); // Right Key Up


0
 
LVL 86

Assisted Solution

by:jkr
jkr earned 2000 total points
ID: 20352936
For the lower-case keys, you can just use the virtual keycode (1st parameter), the scan code is the same (it is the same key anyway), e.g.

keybd_event('a',0x1e,0,0);

And 'Make' and 'Break' coresspond to 'press' and 'release'.

0
 

Author Comment

by:Troudeloup
ID: 20352964
keybd_event('a',0x1e,0,0);


a   //   if I put "A" here, does it mean it would be upper case?
0x1e   //  press
0       //   what does this mean?
0      //   what does this mean?
0
 
LVL 86

Assisted Solution

by:jkr
jkr earned 2000 total points
ID: 20352972
>>    DWORD dwData,                   // what's this?
>>    ULONG_PTR dwExtraInfo           // what's this?

These are only necessary for MOUSEEVENTF_WHEEL, then dwData specifies the amount of wheel movement. You ca nset them both to '0'.
0
 
LVL 86

Assisted Solution

by:jkr
jkr earned 2000 total points
ID: 20352993
>>a   //   if I put "A" here, does it mean it would be upper case?

Yes, indeed. The virtual keycodes for letters correcpond directly to their ASCII values.
0
 

Author Comment

by:Troudeloup
ID: 20353054
>>    DWORD dwData,                   // what's this?
>>    ULONG_PTR dwExtraInfo           // what's this?

These are only necessary for MOUSEEVENTF_WHEEL, then dwData specifies the amount of wheel movement. You ca nset them both to '0'.




does this mean I can click mouse and turn mouse wheel at the same time?    (wow)




how do I turn mouse wheel if I need to turn it?
0
 
LVL 86

Assisted Solution

by:jkr
jkr earned 2000 total points
ID: 20353095
Well, you can use

mouse_event(MOUSEEVENTF_MOVE | MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_WHEEL, 100, 100, 2400, NULL);

See also the docs at http://msdn2.microsoft.com/en-us/library/ms646260.aspx they have it all.
0
 

Author Comment

by:Troudeloup
ID: 20353136
how do I send a string to keyboard?
0
 
LVL 86

Assisted Solution

by:jkr
jkr earned 2000 total points
ID: 20353199
Well, like

keybd_event('D',0x20,0,0);
keybd_event('a',0x1e,0,0);
keybd_event('d',0x20,0,0);
keybd_event('d',0x20,0,0);
keybd_event('y',0x15,0,0);
0
 

Author Comment

by:Troudeloup
ID: 20353241
void output ( string string1 )
{
      int size = string1.size();

     int n = 0;
     while ( n < size )
    {
         switch string1[n]
 
         case "a"       keybd_event('a',0x1e,0,0);
        case  "A"      keybd_event(//placaholder );

   }

 }



how about something like this?




0
 

Author Comment

by:Troudeloup
ID: 20353284
for mouse events,


what if I just want to move the mouse wheel?
0
 
LVL 86

Assisted Solution

by:jkr
jkr earned 2000 total points
ID: 20353315
That you can do like

void output ( string string1 )
{
      int size = string1.size();

      for (int i = 0; i < size; ++i)
      {
         BYTE vk = LOBYTE(::MapVirtualKey(string1[i], 0));

         keybd_event(string1[i],vk,0,0);
         keybd_event(string1[i],vk,KEYEVENTF_KEYUP,0);
      }
0
 

Author Comment

by:Troudeloup
ID: 20353339
I don't get your code;

what is this?

   BYTE vk = LOBYTE(::MapVirtualKey(string1[i], 0));


it seems that you retrieved the bye code somehow ( extremely cool, btw)


but how does it work?
0
 
LVL 86

Assisted Solution

by:jkr
jkr earned 2000 total points
ID: 20353365
That line looks up the scan code, so you don't have to manually provide a lookup table.
0
 

Author Comment

by:Troudeloup
ID: 20353369
how did you do that O_o ?
0
 
LVL 86

Accepted Solution

by:
jkr earned 2000 total points
ID: 20353406
Yup, I will.
0

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