Windows lock mouse input

Only the foreground window can capture mouse input. When a background window attempts to capture mouse input, it receives messages only for mouse events that occur when the cursor hot spot is within the visible portion of the window. Capturing mouse input is useful if a window must receive all mouse input, even when the cursor moves outside the window.

For example, an application typically tracks the cursor position after a mouse button down event, following the cursor until a mouse button up event occurs. If an application has not captured mouse input and the user releases the mouse button outside the window, the window does not receive the button-up message. A thread can use the GetCapture function to determine whether one of its windows has captured the mouse.

If one of the thread's windows has captured the mouse, GetCapture retrieves a handle to the window. The Mouse ClickLock accessibility feature enables a user lock down the primary mouse button after a single click. To an application, the button still appears to be pressed down. To unlock the button, an application can send any mouse message or the user can click any mouse button.

This feature lets a user do complex mouse combinations more simply. For example, those with certain physical limitations can highlight text, drag objects, or open menus more easily. For more information, see the following flags and the Remarks in SystemParametersInfo :. Although the mouse is an important input device for applications, not every user necessarily has a mouse. Windows supports a mouse having up to three buttons. On a three-button mouse, the buttons are designated as the left, middle, and right buttons.

Messages and named constants related to the mouse buttons use the letters L, M, and R to identify the buttons.

The button on a single-button mouse is considered to be the left button. Although Windows supports a mouse with multiple buttons, most applications use the left button primarily and the others minimally, if at all. Applications can also support a mouse wheel. The mouse wheel can be pressed or rotated.

When the mouse wheel is pressed, it acts as the middle third button, sending normal middle button messages to your application. When it is rotated, a wheel message is sent to your application. For more information, see The Mouse Wheel section. Applications can support application-command buttons. These buttons, called X buttons, are designed to allow easier access to an Internet browser, electronic mail, and media services.

To configure the mouse for a left-handed user, the application can use the SwapMouseButton function to reverse the meaning of the left and right mouse buttons. Note, however, that the mouse is a shared resource, so reversing the meaning of the buttons affects all applications.

Windows supports a mouse with five buttons. There is support for the keyboards that have extra keys for browser functions, media functions, application launching, and power management. The mouse generates an input event when the user moves the mouse, or presses or releases a mouse button. When input is blocked, real physical input from the mouse or keyboard will not affect the input queue's synchronous key state reported by GetKeyState and GetKeyboardState , nor will it affect the asynchronous key state reported by GetAsyncKeyState.

However, the thread that is blocking input can affect both of these key states by calling SendInput. No other thread can do this. Keyboard Input. Skip to main content. Details required : characters remaining Cancel Submit 1 person found this reply helpful.

Was this reply helpful? Yes No. Sorry this didn't help. Thanks for your feedback. Ignacio Castillo icastillo. I have the same question 0. Thanks for another great post! My toddlers are forever pushing buttons as soon as I leave the room…especially the power button.

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