Simulate Keyboard Button Press for arrow keys
-4
I've setup 2 functions to simulate keyboard button presses
void KeyboardButtonDown(DWORD a)
{
INPUT Input = { 0 };
// Set up a generic keyboard event.
Input.type = INPUT_KEYBOARD;
Input.ki.wVk = a;
SendInput(1, &Input, sizeof(INPUT));
}
void KeyboardButtonUp(DWORD a)
{
INPUT Input = { 0 };
Input.type = INPUT_KEYBOARD;
Input.ki.dwFlags = KEYEVENTF_KEYUP;
Input.ki.wVk = a;
SendInput(1, &Input, sizeof(INPUT));
}
It works in most cases, however it fails in some apps when simulating arrow keys, as a simple exampe
KeyboardButtonDown(VK_LEFT);
Sleep(50);
KeyboardButtonUp(VK_LEFT);
Sleep(50);
It works in notepad but when playing a game it does nothing. I've mapped the controls in game to use other keys instead and it then works fine.
What am I doing wrong here?
c++ winapi sendinput
edited Nov 14 '18 at 21:18
Swordfish
9,61911436
asked Nov 14 '18 at 21:03
linjoehanlinjoehan
111
add a comment |
-4
I've setup 2 functions to simulate keyboard button presses
void KeyboardButtonDown(DWORD a)
{
INPUT Input = { 0 };
// Set up a generic keyboard event.
Input.type = INPUT_KEYBOARD;
Input.ki.wVk = a;
SendInput(1, &Input, sizeof(INPUT));
}
void KeyboardButtonUp(DWORD a)
{
INPUT Input = { 0 };
Input.type = INPUT_KEYBOARD;
Input.ki.dwFlags = KEYEVENTF_KEYUP;
Input.ki.wVk = a;
SendInput(1, &Input, sizeof(INPUT));
}
It works in most cases, however it fails in some apps when simulating arrow keys, as a simple exampe
KeyboardButtonDown(VK_LEFT);
Sleep(50);
KeyboardButtonUp(VK_LEFT);
Sleep(50);
It works in notepad but when playing a game it does nothing. I've mapped the controls in game to use other keys instead and it then works fine.
What am I doing wrong here?
c++ winapi sendinput
edited Nov 14 '18 at 21:18
Swordfish
9,61911436
asked Nov 14 '18 at 21:03
linjoehanlinjoehan
111
1
This question gets asked many times each week. Try searching for all the other times it has been asked.
– David Heffernan
Nov 14 '18 at 21:33
Possible duplicate of Simulating Keyboard with SendInput API in DirectInput applications
– zett42
Nov 14 '18 at 22:53
Games have a simple way to protect themselves against multi-player cheats, they use raw input. The only way to fool them is to inject keyboard input at the driver level, that is not a technique that the default keyboard driver puts up with. Replacing it has not been accomplished often.
– Hans Passant
Nov 14 '18 at 23:34
add a comment |
-4
-4
-4
I've setup 2 functions to simulate keyboard button presses
void KeyboardButtonDown(DWORD a)
{
INPUT Input = { 0 };
// Set up a generic keyboard event.
Input.type = INPUT_KEYBOARD;
Input.ki.wVk = a;
SendInput(1, &Input, sizeof(INPUT));
}
void KeyboardButtonUp(DWORD a)
{
INPUT Input = { 0 };
Input.type = INPUT_KEYBOARD;
Input.ki.dwFlags = KEYEVENTF_KEYUP;
Input.ki.wVk = a;
SendInput(1, &Input, sizeof(INPUT));
}
It works in most cases, however it fails in some apps when simulating arrow keys, as a simple exampe
KeyboardButtonDown(VK_LEFT);
Sleep(50);
KeyboardButtonUp(VK_LEFT);
Sleep(50);
It works in notepad but when playing a game it does nothing. I've mapped the controls in game to use other keys instead and it then works fine.
What am I doing wrong here?
c++ winapi sendinput
edited Nov 14 '18 at 21:18
Swordfish
9,61911436
asked Nov 14 '18 at 21:03
linjoehanlinjoehan
111
I've setup 2 functions to simulate keyboard button presses
void KeyboardButtonDown(DWORD a)
{
INPUT Input = { 0 };
// Set up a generic keyboard event.
Input.type = INPUT_KEYBOARD;
Input.ki.wVk = a;
SendInput(1, &Input, sizeof(INPUT));
}
void KeyboardButtonUp(DWORD a)
{
INPUT Input = { 0 };
Input.type = INPUT_KEYBOARD;
Input.ki.dwFlags = KEYEVENTF_KEYUP;
Input.ki.wVk = a;
SendInput(1, &Input, sizeof(INPUT));
}
It works in most cases, however it fails in some apps when simulating arrow keys, as a simple exampe
KeyboardButtonDown(VK_LEFT);
Sleep(50);
KeyboardButtonUp(VK_LEFT);
Sleep(50);
It works in notepad but when playing a game it does nothing. I've mapped the controls in game to use other keys instead and it then works fine.
What am I doing wrong here?
c++ winapi sendinput
c++ winapi sendinput
edited Nov 14 '18 at 21:18
Swordfish
9,61911436
asked Nov 14 '18 at 21:03
linjoehanlinjoehan
111
edited Nov 14 '18 at 21:18
Swordfish
9,61911436
asked Nov 14 '18 at 21:03
linjoehanlinjoehan
111
edited Nov 14 '18 at 21:18
Swordfish
9,61911436
edited Nov 14 '18 at 21:18
Swordfish
9,61911436
edited Nov 14 '18 at 21:18
Swordfish
9,61911436
9,61911436
asked Nov 14 '18 at 21:03
linjoehanlinjoehan
111
asked Nov 14 '18 at 21:03
linjoehanlinjoehan
111
asked Nov 14 '18 at 21:03
linjoehanlinjoehan
111
111
1
This question gets asked many times each week. Try searching for all the other times it has been asked.
– David Heffernan
Nov 14 '18 at 21:33
Possible duplicate of Simulating Keyboard with SendInput API in DirectInput applications
– zett42
Nov 14 '18 at 22:53
Games have a simple way to protect themselves against multi-player cheats, they use raw input. The only way to fool them is to inject keyboard input at the driver level, that is not a technique that the default keyboard driver puts up with. Replacing it has not been accomplished often.
– Hans Passant
Nov 14 '18 at 23:34
add a comment |
1
This question gets asked many times each week. Try searching for all the other times it has been asked.
– David Heffernan
Nov 14 '18 at 21:33
Possible duplicate of Simulating Keyboard with SendInput API in DirectInput applications
– zett42
Nov 14 '18 at 22:53
Games have a simple way to protect themselves against multi-player cheats, they use raw input. The only way to fool them is to inject keyboard input at the driver level, that is not a technique that the default keyboard driver puts up with. Replacing it has not been accomplished often.
– Hans Passant
Nov 14 '18 at 23:34
1
1
This question gets asked many times each week. Try searching for all the other times it has been asked.
– David Heffernan
Nov 14 '18 at 21:33
This question gets asked many times each week. Try searching for all the other times it has been asked.
– David Heffernan
Nov 14 '18 at 21:33
Possible duplicate of Simulating Keyboard with SendInput API in DirectInput applications
– zett42
Nov 14 '18 at 22:53
Possible duplicate of Simulating Keyboard with SendInput API in DirectInput applications
– zett42
Nov 14 '18 at 22:53
Games have a simple way to protect themselves against multi-player cheats, they use raw input. The only way to fool them is to inject keyboard input at the driver level, that is not a technique that the default keyboard driver puts up with. Replacing it has not been accomplished often.
– Hans Passant
Nov 14 '18 at 23:34
Games have a simple way to protect themselves against multi-player cheats, they use raw input. The only way to fool them is to inject keyboard input at the driver level, that is not a technique that the default keyboard driver puts up with. Replacing it has not been accomplished often.
– Hans Passant
Nov 14 '18 at 23:34
add a comment |
1 Answer
1
active
oldest
votes
2
If the receiving application uses Direct Input you have to send scan codes instead of virtual key codes.
answered Nov 14 '18 at 21:09
SwordfishSwordfish
9,61911436
In which case, look atMapVirtualKey/Ex()to get a scan code from a virtual key
– Remy Lebeau
Nov 14 '18 at 21:57
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
If the receiving application uses Direct Input you have to send scan codes instead of virtual key codes.
answered Nov 14 '18 at 21:09
SwordfishSwordfish
9,61911436
In which case, look atMapVirtualKey/Ex()to get a scan code from a virtual key
– Remy Lebeau
Nov 14 '18 at 21:57
add a comment |
2
If the receiving application uses Direct Input you have to send scan codes instead of virtual key codes.
answered Nov 14 '18 at 21:09
SwordfishSwordfish
9,61911436
In which case, look atMapVirtualKey/Ex()to get a scan code from a virtual key
– Remy Lebeau
Nov 14 '18 at 21:57
add a comment |
2
2
2
If the receiving application uses Direct Input you have to send scan codes instead of virtual key codes.
answered Nov 14 '18 at 21:09
SwordfishSwordfish
9,61911436
If the receiving application uses Direct Input you have to send scan codes instead of virtual key codes.
answered Nov 14 '18 at 21:09
SwordfishSwordfish
9,61911436
edited Nov 14 '18 at 21:16
answered Nov 14 '18 at 21:09
SwordfishSwordfish
9,61911436
answered Nov 14 '18 at 21:09
SwordfishSwordfish
9,61911436
answered Nov 14 '18 at 21:09
SwordfishSwordfish
9,61911436
9,61911436
In which case, look atMapVirtualKey/Ex()to get a scan code from a virtual key
– Remy Lebeau
Nov 14 '18 at 21:57
add a comment |
In which case, look atMapVirtualKey/Ex()to get a scan code from a virtual key
– Remy Lebeau
Nov 14 '18 at 21:57
In which case, look at
MapVirtualKey/Ex() to get a scan code from a virtual key– Remy Lebeau
Nov 14 '18 at 21:57
In which case, look at
MapVirtualKey/Ex() to get a scan code from a virtual key– Remy Lebeau
Nov 14 '18 at 21:57
add a comment |
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1
This question gets asked many times each week. Try searching for all the other times it has been asked.
– David Heffernan
Nov 14 '18 at 21:33
Possible duplicate of Simulating Keyboard with SendInput API in DirectInput applications
– zett42
Nov 14 '18 at 22:53
Games have a simple way to protect themselves against multi-player cheats, they use raw input. The only way to fool them is to inject keyboard input at the driver level, that is not a technique that the default keyboard driver puts up with. Replacing it has not been accomplished often.
– Hans Passant
Nov 14 '18 at 23:34