windows SendInput (C++) 不工作
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SendInput (C++) is not working
提问by asmw
The return value is 4 and I'm running Visual Studio in administrative mode so permissions should be ok. I don't see anything typed out though. Any help? I'm using Windows 7 x64.
返回值是 4，我在管理模式下运行 Visual Studio，所以权限应该没问题。虽然我没有看到任何输入。有什么帮助吗？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());
}
回答by SLaks
You need to send both KeyDown and KeyUp events for each key.
To send a KeyUp event, set dwFlagsto KEYEVENTF_KEYUP.
您需要为每个键发送 KeyDown 和 KeyUp 事件。
要发送 KeyUp 事件，请设置dwFlags为KEYEVENTF_KEYUP。
Also, you need to use wVkinstead of wScan. (wScanis only used with KEYEVENTF_UNICODE)
此外，您需要使用wVk而不是wScan. (wScan仅用于KEYEVENTF_UNICODE)
回答by SLaks
Just to spell it out for whomever comes across this. I addedKEYEVENTF_UNICODE and removedKEYEVENTF_SCANCODE.
只是为遇到此问题的任何人拼写出来。我添加了KEYEVENTF_UNICODE 并删除了KEYEVENTF_SCANCODE。
KEYEVENTF_UNICODE 0x0004 If specified, the system synthesizes a VK_PACKET keystroke. The wVk parameter must be zero. This flag can only be combined with the KEYEVENTF_KEYUP flag. For more information, see the Remarks section.
KEYEVENTF_UNICODE 0x0004 如果指定，系统将合成 VK_PACKET 击键。wVk 参数必须为零。此标志只能与 KEYEVENTF_KEYUP 标志结合使用。有关更多信息，请参阅备注部分。
-MSDN
- MSDN
The sample should output "aa".
样本应该输出“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;
}
