negative coordinates?

[h_howee]

I'm working on a breakout game and i want the paddle to follow the mouse
It works from the left side of the client area to the far right of the screen but when i go over the left side of the client area, i expected it to return a negative value and the paddle keeps moving left but instead, i get some coordinate like (32070, 32389) and it goes right

i tried adding m.x < 5000 but for some reason, that doesn't work

Heres the function that moves the paddle and the function i use to get the mouse inputs

void C_Paddle::Paddle_Movement()
{
    POINT m = Input.Get_Mouse();
    RECT ClientRect;
    GetClientRect(g_hwnd, &ClientRect);

    if ((Paddle_Rect.left + Paddle_Size/2) < m.x && m.x < 5000)
    {
        Paddle_Rect.left++;
        Paddle_Rect.right = Paddle_Rect.left + Paddle_Size;
    }
    if ((Paddle_Rect.left + Paddle_Size/2) > m.x)
    {
        Paddle_Rect.left--;
        Paddle_Rect.right = Paddle_Rect.left + Paddle_Size;
    }
}

void C_Input::Set_Mouse()
{
    GetCursorPos(&Mouse);
    ScreenToClient(g_hwnd, &Mouse);
}

POINT Get_Mouse() { return Mouse; }

Set_Mouse is constantly called in the main loop, would it be better practice to only call it from the wndproc?

[edit] What brush does the Ellipse function use?

[edit2] Why didn't i get any warnings when trying to access a private member?