Is there any way to query the state of mouse buttons in OSX? In other words, I am looking for a function that returns whether a mouse button is currently being pressed or not. The equivalent under Windows would be GetAsyncKeyState(VK_LBUTTON).
This is in the context of a Quartz event if that matters. I found the promising function CGEventSourceFlagsState that, when called with kCGEventSourceStateHIDSystemState returns that information for the CONTROL, SHIFT, ALT keys but from what I can see, unfortunately not for mouse buttons.
Seems like CGEventSourceButtonState might just be what I am looking for.
Related
I'm writing a gtk4 application in rust, and I'd like to get the mouse key that was clicked and any modifier keys at the time. My GestureClick handler has .buttons(0) to accept input from all buttons, but the event object does not seem to have any way to determine the source of the event. The event just gives the GestureClick object, location, and click count. Does it need to have a separate handler for each button?
In addition, I'd like to use modifier keys like shift and ctrl to modify the action. This does not seem to be available (at least, I haven't been able to find it). Would I need to monitor keypress events to keep track of the state myself? I'm pretty sure X reports the state of the modifier keys on click events, gtk doesn't?
Thanks
For the purpose of putting more actions on fewer buttons I was hoping to detect if a window has scrolling functions. For example when a pop-up is asking you if you want to save something or not it tends to default to No. That window does not have any functionality tied to the mouse wheel action. In that scope I was planning to have the mouse wheel up and down input up or down directions. Maybe there is a way to detect if the window has scrolling enabled? Or maybe there is another work-around such as that pop-up window having a specific windows class?
Look at the GetScrollBarInfo function in the answer here How I can check if a Window has visible scrollbars using his HWND? for some useful info, but in my view, easiest is to capture window classes and fire mouse wheels accordingly, just like the example in the help for #if except you will need a correct WinTitle (use class of pop up) instead of identifying the Taskbar, and you will send tab and alt+tab in your mousewheels instead of the volume controls:
#If MouseIsOver("ahk_class Shell_TrayWnd")
WheelUp::Send {Volume_Up}
WheelDown::Send {Volume_Down}
MouseIsOver(WinTitle) {
MouseGetPos,,, Win
return WinExist(WinTitle . " ahk_id " . Win)
}
https://www.autohotkey.com/docs/commands/_If.htm
Hth,
I am aware of this question, but that's different to what I am looking for, as the accepted answer hides the cursor.
I'm writing software that remaps the left mouse button to the left CTRL key.
I have it working, with one problem: when I hold down the CTRL key and drag the mouse pointer this feature often activates, which messes up my drag operation (it feels like trying to change direction running on ice).
So the Apple engineers must have disabled this feature while the left mouse button is down and re-enabled it when the button is released.
Something like this -- however when I inject my simulated mouse events, the feature does not disable.
What I'm getting at is: there must be some programmatic way of doing it, even if it is an internal Apple function. Unless Apple are using the solution in the linked answer, i.e. NSCursor.hide() and then manually drawing the cursor icon at the cursor location.
How can I accomplish this cleanly?
EDIT: A CGEventTap for NSEventTypeGesture or NSEventTypeMagnify fails to catch anything.
First of all hi guys!
I was trying to write a mouse controller app for mac os x which is reading inputs from keyboard and moves the mouse accordingly. By garbage input i will describe the input was intented for a mouse event but it creates text on screen.
Before anyone points to the fact that there is a built in one, It was laggy even in shortest lag setting and cannot registers more than two buttons at the same time (you have to press diagonals to go to the diagonal.) If you accidentally press another button when release of the accident button your motion stops. My first and last reaction was "rubbish!". Adding customization and extra features is my goal.
I want to create a key combination that will block the garbage input to be passed to other programs while it was held. But global monitoring and seems like it always passes the event. And unfortunately I see qqqqqqqwwwwwww like text in unwanted places.
I want to see that when i press q w and up, it will make the mouse go up. But i create qqqqqqqwwwwww mess on the way. My first idea was creating a view on popover and handle events there, but whenever I want to use my mouse from keyboard seeing a popover is anoying and I couldn't find a way to show the popover without leaving any garbage keyboard input.
What should i do in this situation?
You will want to use Quartz Event Taps. Note that for an application to tap keyboard events, it has to be trusted for accessibility (as in System Preferences > Security & Privacy > Privacy > Accessibility). Your app can ask to be made trusted using AXIsProcessTrustedWithOptions().
I'm writing an application using wxHaskell and I want to be able to detect the state of a button (whether or not it is pressed at any given time). I'm having a bit of trouble figuring out how to do this, however. First I thought that there might be a "button is pressed" attribute that I could use, but there didn't seem to be. Then I had the idea of maintaining an IORef which I update on button-up and button-down events. However, that would require that the Button object actually have button-up and button-down events, which is does not appear to. It is an instance of Commanding, but I assume that the command event is fired on button-up only, which isn't enough for that idea. Does anyone have any other suggestions?
Workaround
You can implement this yourself by detecting the low-level actions that trigger those events (eg. mouse button down, space bar down).
In WX you can use the following function and constructor:
mouse :: Reactive w => Event w (EventMouse -> IO ())
data EventMouse = ... | MouseLeftDown !Point !Modifiers
And, as you suggest, you could keep the state yourself in an IORef. My suspicion is that left button here means main button (right for left-handed users).
UI design principles
The second question, which you haven't asked by I'll answer, is whether this is good UI design.
The behaviour of a button (assuming interaction using a mouse) is that click events are reported when the user releases the mouse button in the button area after pressing the mouse button down in the same area. If the user moves away and releases, or presses 'Escape', there is no click.
Taking any action on a button being pressed (not clicked) would feel unnatural for users.
In practice, the only acceptable way to use this would be, imho, to take an action whose effects can only be witnessed after releasing and which is immediately undone if the click is cancelled (ie. mouse button released outside button area).
EDIT: Please, also, take into account that users with accessibility requirements may have OS settings enabled that affect how and when button clicks are reported (but not down/up mouse events).
There is no way to know if a wxButton is pressed or not because it is an abstraction of a push button which intentionally hides this implementation detail. If you need to know the button state, use a wxToggleButton instead.