[英]SendInput (C++) is not working
The return value is 4 and I'm running Visual Studio in administrative mode so permissions should be ok. 返回值为4,并且我在管理模式下运行Visual Studio,因此权限应该确定。 I don't see anything typed out though. 我看不到任何内容。 Any help? 有什么帮助吗? I'm using Windows 7 x64. 我正在使用Windows 7 x64。
INPUT input[4];
input[0].type = INPUT_KEYBOARD;
input[0].ki.wVk = 0;
input[0].ki.wScan = 'a';
input[0].ki.dwFlags = KEYEVENTF_SCANCODE;
input[0].ki.time = 0;
input[0].ki.dwExtraInfo = 0;
input[1].type = INPUT_KEYBOARD;
input[1].ki.wVk = 0;
input[1].ki.wScan = 'a';
input[1].ki.dwFlags = KEYEVENTF_KEYUP | KEYEVENTF_SCANCODE;
input[1].ki.time = 0;
input[1].ki.dwExtraInfo = 0;
input[2].type = INPUT_KEYBOARD;
input[2].ki.wVk = 0;
input[2].ki.wScan = 'a';
input[2].ki.dwFlags = KEYEVENTF_SCANCODE;
input[2].ki.time = 0;
input[2].ki.dwExtraInfo = 0;
input[3].type = INPUT_KEYBOARD;
input[3].ki.wVk = 0;
input[3].ki.wScan = 'a';
input[3].ki.dwFlags = KEYEVENTF_KEYUP | KEYEVENTF_SCANCODE;
input[3].ki.time = 0;
input[3].ki.dwExtraInfo = 0;
int retval = SendInput(4, input, sizeof(INPUT));
if(retval > 0)
{
wxLogDebug("SendInput sent %i", retval);
}
else
{
wxLogError("Unable to send input commands. Error is: %i", GetLastError());
}
You need to send both KeyDown and KeyUp events for each key. 您需要为每个键发送KeyDown和KeyUp事件。
To send a KeyUp event, set dwFlags
to KEYEVENTF_KEYUP
. 要发送KeyUp事件,请将dwFlags
设置为KEYEVENTF_KEYUP
。
Also, you need to use wVk
instead of wScan
. 另外,您需要使用wVk
而不是wScan
。 ( wScan
is only used with KEYEVENTF_UNICODE
) ( wScan
仅与KEYEVENTF_UNICODE
)
Just to spell it out for whomever comes across this. 只是为遇到这个问题的任何人说明一下。 I added KEYEVENTF_UNICODE and removed KEYEVENTF_SCANCODE. 我添加了 KEYEVENTF_UNICODE并删除了 KEYEVENTF_SCANCODE。
KEYEVENTF_UNICODE 0x0004 If specified, the system synthesizes a VK_PACKET keystroke. KEYEVENTF_UNICODE 0x0004如果指定,系统将合成VK_PACKET击键。 The wVk parameter must be zero. wVk参数必须为零。 This flag can only be combined with the KEYEVENTF_KEYUP flag. 该标志只能与KEYEVENTF_KEYUP标志结合使用。 For more information, see the Remarks section. 有关更多信息,请参见“备注”部分。
The sample should output "aa". 样本应输出“ aa”。
#include <windows.h>
#include <tchar.h>
int _tmain(int argc, _TCHAR* argv[])
{
INPUT input[4];
input[0].type = INPUT_KEYBOARD;
input[0].ki.wVk = 0;
input[0].ki.wScan = L'a';
input[0].ki.dwFlags = KEYEVENTF_UNICODE ;
input[0].ki.time = 0;
input[0].ki.dwExtraInfo = 0;
input[1].type = INPUT_KEYBOARD;
input[1].ki.wVk = 0;
input[1].ki.wScan = L'a';
input[1].ki.dwFlags = KEYEVENTF_KEYUP | KEYEVENTF_UNICODE ;
input[1].ki.time = 0;
input[1].ki.dwExtraInfo = 0;
input[2].type = INPUT_KEYBOARD;
input[2].ki.wVk = 0;
input[2].ki.wScan = L'a';
input[2].ki.dwFlags = KEYEVENTF_UNICODE ;
input[2].ki.time = 0;
input[2].ki.dwExtraInfo = 0;
input[3].type = INPUT_KEYBOARD;
input[3].ki.wVk = 0;
input[3].ki.wScan = L'a';
input[3].ki.dwFlags = KEYEVENTF_KEYUP | KEYEVENTF_UNICODE ;
input[3].ki.time = 0;
input[3].ki.dwExtraInfo = 0;
SetConsoleTitle(L"TESTING");
ShowWindow(FindWindow(NULL, L"TESTING"),SW_MINIMIZE );
int retval = SendInput(4, input, sizeof(INPUT));
if(retval > 0)
{
_tprintf(_T("SendInput sent %i"), retval);
}
else
{
_tprintf(_T("Unable to send input commands. Error is: %i"), GetLastError());
}
return 0;
}
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