c语言捕获Windows鼠标点击、移动行为

⌚Time: 2022-12-14 13:32:24

👨‍💻Author: Jack Ge

对于鼠标的移动,通过GetCursorPos得到鼠标的当前位置,他会保存在一个POINT结构体中


BOOL GetCursorPos(

  [out] LPPOINT lpPoint

);

typedef struct tagPOINT {

  LONG x;

  LONG y;

} POINT, *PPOINT, *NPPOINT, *LPPOINT;

GetAsyncKeyState函数的返回值包含鼠标按键的信息,参数是要检测的鼠标的VK键值


SHORT GetAsyncKeyState(

  [in] int vKey

);

Parameters

[in] vKey



Type: int



The virtual-key code. For more information, see Virtual Key Codes.



You can use left- and right-distinguishing constants to specify certain keys. See the Remarks section for further information.



Return value

Type: SHORT



If the function succeeds, the return value specifies whether the key was pressed since the last call to GetAsyncKeyState, and whether the key is currently up or down. If the most significant bit is set, the key is down, and if the least significant bit is set, the key was pressed after the previous call to GetAsyncKeyState. However, you should not rely on this last behavior; for more information, see the Remarks.



The return value is zero for the following cases:



The current desktop is not the active desktop

The foreground thread belongs to another process and the desktop does not allow the hook or the journal record.

Remarks

The GetAsyncKeyState function works with mouse buttons. However, it checks on the state of the physical mouse buttons, not on the logical mouse buttons that the physical buttons are mapped to. For example, the call GetAsyncKeyState(VK_LBUTTON) always returns the state of the left physical mouse button, regardless of whether it is mapped to the left or right logical mouse button. You can determine the system's current mapping of physical mouse buttons to logical mouse buttons by calling GetSystemMetrics(SM_SWAPBUTTON).



which returns TRUE if the mouse buttons have been swapped.



Although the least significant bit of the return value indicates whether the key has been pressed since the last query, due to the preemptive multitasking nature of Windows, another application can call GetAsyncKeyState and receive the "recently pressed" bit instead of your application. The behavior of the least significant bit of the return value is retained strictly for compatibility with 16-bit Windows applications (which are non-preemptive) and should not be relied upon.



You can use the virtual-key code constants VK_SHIFT, VK_CONTROL, and VK_MENU as values for the vKey parameter. This gives the state of the SHIFT, CTRL, or ALT keys without distinguishing between left and right.

需要包含头文件windows.h

代码


#include <windows.h>

#include <iostream>

using namespace std;

int main(int argc,char* argv[]){

    while(1){

        Sleep(100);

        POINT point;

        GetCursorPos(&point);

        cout<<"current mouse position:x="<<point.x<<"y="<<point.y<<endl;

        if(GetAsyncKeyState(VK_LBUTTON)&0x8000){

            cout<<"left button pressed!"<<endl;

        }

        if(GetAsyncKeyState(VK_MBUTTON)&0x8000){

            cout<<"middle button pressed!"<<endl;

        }

        if(GetAsyncKeyState(VK_RBUTTON)&0x8000){

            cout<<"right button pressed!"<<endl;

        }

    }

    return 0;

}


编译


g++ test.cpp -o a.exe