SendInput鼠标时间

Question

基本上我想做的是将我的鼠标平滑地移动到中心。我这里的东西工作正常，但它会立即将光标传送到中心。

此外，如果我将 input.mi.time 设置为大于 0 的值，它会使我的电脑进入睡眠状态。任何人都可以解释一下它的作用吗？ documentation 并没有真正为我澄清。

#include <iostream>
#include <Windows.h>

int screenWidth;
int screenHeight;

void moveMouse(int x, int y)
{
    POINT mouseCoords;
    GetCursorPos(&mouseCoords);

    INPUT input;
    input.type = INPUT_MOUSE;
    input.mi.dwFlags = MOUSEEVENTF_MOVE;
    input.mi.dwExtraInfo = NULL;
    input.mi.mouseData = NULL;
    input.mi.dx = -mouseCoords.x + x;
    input.mi.dy = -mouseCoords.y + y;
    input.mi.time = NULL;

    SendInput(1, &input, sizeof(INPUT));
}

void main()
{
    screenWidth = GetSystemMetrics(SM_CXSCREEN);
    screenHeight = GetSystemMetrics(SM_CYSCREEN);
    int middleOfScreenX = screenWidth / 2;
    int middleOfScreenY = screenHeight / 2;

    moveMouse(middleOfScreenX, middleOfScreenY);
}

Answer 1

您遇到的问题与 Raymond Chen 在 2012 年的帖子中描述的完全相同：

When you synthesize input with SendInput, you are also synthesizing the timestamp（重点是我的）：

A customer was reporting a problem when they used the SendInput function to simulate a drag/drop operation for automated testing purposes.

Well, yeah, all the events occur immediately because you submitted them all at once.

The time field in the MOUSEINPUT structure is not for introducing delays in playback.

解决方法也在贴子里：

If you want three input events to take place with a 500ms delay between them, then you need to call SendInput three times, with a 500ms delay between the calls.

SendInput鼠标时间

SendInput mouse time

c++

winapi

mousemove

smoothing

sendinput