即使我从msdn看到了sendinput函数,我也不知道输入了什么参数。
UINT WINAPI SendInput(
_In_ UINT nInputs,
_In_ LPINPUT pInputs,
_In_ int cbSize
);
上述参数意味着什么,我需要为它们创建什么? 另外,键入,ki.wScan,ki.time,ki.dwExtraInfo,ki.wVk,ki.dwFlags 上面的对象意味着什么,是否还有其他可能经常使用的对象?
答案 0 :(得分:20)
UINT
是无符号整数类型。 _In_
表示参数是您发送到函数中的输入参数。这与输出参数相反,该参数将是您发送的内容,并且该函数将填写。
LPINPUT
结构定义如下:
typedef struct tagINPUT {
DWORD type;
union
{
MOUSEINPUT mi;
KEYBDINPUT ki;
HARDWAREINPUT hi;
};
} INPUT, *PINPUT, FAR* LPINPUT;
所以它看起来像一个DWORD加上一些其他结构的联合。有关详情,请参阅WinUser.h。
DWORD
是一个32位无符号整数(source):
DWORD是32位无符号整数(范围:0到4294967295 十进制)。因为DWORD是无符号的,所以它的第一位(最重要的) 位(MSB))不保留用于签名。此类型声明为 如下:typedef unsigned long DWORD,* PDWORD,* LPDWORD;
typedef struct tagMOUSEINPUT {
LONG dx;
LONG dy;
DWORD mouseData;
DWORD dwFlags;
DWORD time;
ULONG_PTR dwExtraInfo;
} MOUSEINPUT, *PMOUSEINPUT, FAR* LPMOUSEINPUT;
typedef struct tagKEYBDINPUT {
WORD wVk;
WORD wScan;
DWORD dwFlags;
DWORD time;
ULONG_PTR dwExtraInfo;
} KEYBDINPUT, *PKEYBDINPUT, FAR* LPKEYBDINPUT;
typedef struct tagHARDWAREINPUT {
DWORD uMsg;
WORD wParamL;
WORD wParamH;
} HARDWAREINPUT, *PHARDWAREINPUT, FAR* LPHARDWAREINPUT;
WORD
,LONG
,'ULONG , and
ULONG_PTR`在MSDN page上都已明确定义(请参阅右侧栏目)
以下是使用Google搜索(Source)轻松找到SendInput
的示例:
//
// keystroke.c - Pauses, then simulates a key press
// and release of the "A" key.
//
// Written by Ted Burke - last updated 17-4-2012
//
// To compile with MinGW:
//
// gcc -o keystroke.exe keystroke.c
//
// To run the program:
//
// keystroke.exe
//
// ...then switch to e.g. a Notepad window and wait
// 5 seconds for the A key to be magically pressed.
//
// Because the SendInput function is only supported in
// Windows 2000 and later, WINVER needs to be set as
// follows so that SendInput gets defined when windows.h
// is included below.
#define WINVER 0x0500
#include <windows.h>
int main()
{
// This structure will be used to create the keyboard
// input event.
INPUT ip;
// Pause for 5 seconds.
Sleep(5000);
// Set up a generic keyboard event.
ip.type = INPUT_KEYBOARD;
ip.ki.wScan = 0; // hardware scan code for key
ip.ki.time = 0;
ip.ki.dwExtraInfo = 0;
// Press the "A" key
ip.ki.wVk = 0x41; // virtual-key code for the "a" key
ip.ki.dwFlags = 0; // 0 for key press
SendInput(1, &ip, sizeof(INPUT));
// Release the "A" key
ip.ki.dwFlags = KEYEVENTF_KEYUP; // KEYEVENTF_KEYUP for key release
SendInput(1, &ip, sizeof(INPUT));
// Exit normally
return 0;
}
问题的另一部分:
另外,键入,ki.wScan,ki.time,ki.dwExtraInfo,ki.wVk,ki.dwFlags 上面的对象是什么意思
我相信你是指MSDN page:
中的代码// IMPORTANT: Current keyboard layout 0xf0010413 (Netherland with USA kbd)!!!!!!!
WORD vkCode = 0x36; // '6'
INPUT keyEvent = {0};
keyEvent.type = INPUT_KEYBOARD;
keyEvent.ki.wVk = vkCode;
keyEvent.ki.wScan = MapVirtualKeyEx(vkCode, 0, (HKL)0xf0010413);
SendInput(1, &keyEvent, sizeof(keyEvent));
该代码是通过页面上的其他用途发布的;它不是文档的一部分。用户只需创建一个名为LPINPUT
的{{1}}结构,然后访问结构的keyEvent
部分:
KEYBDEVENT