I'm building an Away3d application which uses Flex 4.6 for UI. The arrow keys are required to move the 3d components - however, after using a component such as a slider, the application gives it focus, which means the arrow keys control it.
I can't find any way to set the global application focus to nothing - is there an easy way to do this?
I've tried setting the application's focusManager.setFocus(new Button()), and null (which crashes it), I'm sure it's easy but I can only find advice on how to set the focus to a component, not set it to nothing.
Thanks in advance!
Perhaps try listening for a mouseup event on the slider then force the focus back to the 3d component with something like:
focusManager.setFocus(3dcomponent);
Related
I have investigated this problem across some different computers with theming/classic-theme and/or theme support disabled in my app...
Problem when Windows is configured to draw the window while dragged + theme drawing enabled:
My primary app window stutters greatly when dragged around screen. It is even so bad that if I drag the window e.g. 10 inches left and releases mouse button... The Window will then continue to move around the screen for 2-5 seconds more!
Speculation #1
I think the message queue may be flooded with paint-message related stuff meaning the move-messages get delayed? (which then again causes paints) Maybe some postmessage/sendmessage queuing going wrong.
What I have tried
I created some code that went through all controls in my form and disabled all events I could think of + called .Hide on them all -- this has no effect on the problem... However, I then created some code that went through all controls and removed them entirely -- this solves the problem if I remove say 50-80% of the controls.
Speculation #2
Is Windows draw style theming also done on controls not visible? (e.g. if placed on a TTabSheet not currently active?)
Other notes
In all honesty my form is very large (I spit out 7 different tools which all use most of it)
It is possible a TFrame based solution - as long as not loaded into memory - could solve this. But there are many problem in this... For one I have not abstracted reading e.g. options... I.e. I read myCheckbox.Checked to determine if a given option is enabled before passing it on my separated business logic.
But it is possible if I had a layer inbetween I could load TFrames as necessary... But it will be major work to convert to this.
...
Any ideas on how to workaround this? Reducing the problem is enough... I am thinking about:
a) Removing what I can.
b) Replacing what I can with stuff not style theme drawn. (E.g. "debug" controls I use myself to understand what is going on)
c) Maybe loading some stuff in TFrame instead
d) Trying to figure out why invisible controls cause problems for the style theme drawing... Could I have them ignored somehow?
e) Disable themning while drawing?
f) Disable having window drawn while dragged even if Windows is configured to draw Windows while they are being dragged.
g) WM_WINDOWPOSCHANGING / WM_WINDOWPOSCHANGED and disable align + draw while it happens.
I'm working on a mobile application where the user needs to login.
The server is returning me if the e-mail is invalid, or subdomain or password and I want to focus the TEdit that has the error. Focus is easy but I would also like to mark the edit as invalid like many web applications do.
What is the best way to do this is a consistent way so it will look correct on both Android as iOS. Is something like this built-in? I'm using Delphi 10.1
Loki's suggestion is a possible solution.
A solution which takes advantage of FMX features would be to use a TGlowEffect for the red frame around the TEdit and then use a TPopup to create the hint.
the style it's just a nightmare in 99% of the case, so i strongly suggest to not touch it. i will instead put a Trectangle as the background of the Tedit, put the Tedit as Transparent (you already have this style ready in the stylelookup in the object inspector), and then simply set the stroke.color of the trectangle.
i m working also right now on a 100% native Tedit on ios/android/windows i guess i will finish this code in around 1 week.
I'm trying to activate Hint from control of different application created from delphi upon focus, I'm using hook to identify the focused control, and then use WM_MOUSEMOVE, which I think will activate the Hint of that control, the handle would be the Control itself and the lParam is the Left and Top of the Control. The Control activate the OnMouseMove Event, but the Hint never shows. but when I use SetCursorPos, Hint show, but I need to show the Hint with out the cursor move on that Control. Can you please help me with this? Thank you in advance... by the way I'm using Delphi XE4
Among the really asked question is how to show the hint of a control that resides on another application (i am afraid without hook that application can not be done), the title is "Delphi - Activating the Hint from another control of Application".
First is first: That can be done without knowing what language the other app was done, but it is very complex to put it here (and i am not an expert on such way of coding, also i hate apps that work that way).
Second: The main idea is to hook the other application, search on Google some code of that apps, that can show you a rectangular hole square of the object the mouse is passing over, that application while doing it is iconized (i do not remember the name of it).
Waht such app does: As you move the mouse over the screen it overlays a rectangular over the control that mouse is over, then if you press the key to print screen, that small region is the only thing that goes to clipboard; on of such apps i saw had an extra funcion, they can move such controls if you press cursors on keyboard, also can hide/enable/disable such control... more, it can also make controls that are invisible to be visible, etc... i saw it working on my computer, and hey, for fun it is pretty and to DeBug or get extra things on some apps is also great (make some menús to be visible and enabled and then can use such funtions).
Please, please, understand i am agaist piracy and also against using such apps to let code to be run... some apps need pay for letting some menus enabled, but they have the code there, no need to change EXE to have/use that menus; just using this kind of apps makes that limited apps to be unlimited (just enable or show hidden menus and voila).
Note: To unhide menus, mouse point is not needed to be over the app, can be anywhere and is not moved.
The idea i want to say is: Any app can move, alter any control on any other app (at least on Windows) that is running, so maybe there can be a way to show such hint.
In the past i had use such app (sorry i do not remember the name) for DeBug my own apps, so i do not need to recompile in such cases where something was wrongly hidden, also work with buttons, labels, texts, combos, memos, etc.
Now my small problem is: I just need exactly what title say, but i can not make it to work.
Must be:
Mouse position must be irrelevant (it also must be able to be outside the application)
Just when a button that has focus is pressed with keyboard (Space or Enter) or just after some code somewhere on my application, i want to show the Hint of a specific TEdit for a short period of time.
I did not get Hint to be shown; not unless mouse point is over such TEdit but i want/need mouse pointer to not be over it, neither it to jump to the TEdit.
Idea Conept for that Hint to be shown: After doing some code that changes something, show extra info associated.
Example:
A button with that loads a file using an open dialog, filename is put on a ReadOnly TEdit (so it let user copy the text, but not change it); i want extra info that i punt on .Hint of such TEdit to be shown inmediatly.
That hint use is for not overload window with a lot of fields (TLabels) for showing such file data.
Simple idea: such Hint shows TimeStamp and size of the selected file.
P.D.: Not much related (since i am trying with a normal plain text hint), but hints can also store a full HTML page and with 3rd party tools be shown as an HTMLhint, so they can show a lot info of that file (also its content, etc) in a web based format; as i say i first try with standard plain text hints.
In order to show hint programatically you need to call TApplications ActivateHint method to which you specify the position parameter.
http://docwiki.embarcadero.com/Libraries/XE3/en/Vcl.Forms.TApplication.ActivateHint
Based on position parameter Application automatically finds which controll is at that position and shows its hint.
NOTE: Position parameter screen coordinates in pixels and not your controll coordinates. So you will have to use ClientToScreen method to change your coordinates apropriately.
You can see simple example of how to use this here: https://stackoverflow.com/a/15031208/3636228
Now if you need to do this from another application then you will have to add some comunication mechanizm to these two application so that one could send a proper message to tell the other to show the hint at specific position. But this does require you to be able to change both applications.
EDIT: This works with VCL applications but I'm not sure if it would work with FireMonkey applications.
It not just my curiosity, recently I've received a bugreport concerning one of my AS3 applications. This bug can be reproduced only if the quality in flash player is set to LOW (HIGH/MEDIUM - everything is ok). The bug changes the application behaviour, but it's a mystery for me, why it happens only for LOW quality while quality is said to influence rendering and visual appearance, not the code or behaviour.
Briefly, I have a menu panel (MovieClip) with several items (also MovieClips). Very simple, it appears on a screen after a MouseEvent and a user moves a cursor from one element down to another. When the cursor reaches the edge of the second item, the menu suddenly disappears.
In my code panel hiding is set on mouse click or mouse out.
Personally, I think, that the problem is in Tweener, I have to use that old piece of code. The menu panel is shown when mouse is above a user icon, and concurrently with the help of Tweener I produce some simple effects on this icon.
I have explored adobe and firefox (my app is for web browsers and the bug is reported for firefox) bugtrackers, but so far I have found nothing. Maybe misbehaviour of flash player 11 with Arrays, already fixed... I've run out of ideas.
From the docs:
LOW
Specifies low rendering quality: graphics are not anti-aliased, and bitmaps are not smoothed.
If it only happens when rendering it set to low, then it's probably a timing issue - i.e., the bug has always been there, but because you're wrapping up rendering earlier, you can trigger then bug. Is the bug reporter's computer a slow one? Is there a lot happening at once? Is the menu being removed, set to invisible, or repositioned?
Like #jeremynealbrown said, try and separate out your class to a simple project to make sure there's nothing wrong with your logic there.
Another method, override the removeChild() method, and visible and x and y properties to see which one is setting it, then put traces before all calls that call these to see what's triggering it.
If you think the problem is in Tweener, add a MOUSE_OVER listener to the menu panel that calls something like removeAllTweens(), no matter the state of the menu panel. If the bug doesn't happen anymore, this will show you that it's related to the tween engine.
I am using the new BrowserField2 in BlackBerry OS5 to display HTML content in my app. There are 3 options available for navigation through links in that content.
CURSOR navigation uses a block cursor and actually moves through the characters of the page. Not very useful for me.
POINTER navigation uses a mouse like pointer that you move around the screen and hover over elements. This could work but there is a bug however in that the browser field captures navigation and never lets go so this mode is effectively broken if you share a screen with any other managers. Once your focus enters the browser field you cannot move focus back out and into neighboring fields. RIM has acknowledged the bug but has no work around.
NONE which is for custom navigation but they offer no explanation as to how you would do this.
What I ideally want is to simply have trackpad movements move the focus through the links and highlight them. Then a click would activate the link. I assume I would select the NONE option above and implement my own focus navigation but I am not clear how this can be accomplished with the new APIs.
Is anyone familiar with the new browser2 component could give some guidance?
Thanks!
There's a workaroudn to getting back the focus out of the BrowserField using the NAVIGATION_POINTER.
I found it in this thread:
http://supportforums.blackberry.com/t5/Java-Development/BrowserField-2-Navigation-Mode/td-p/632172
"farahh" posted this:
I found out a hack..
with the navigation set to pointer mode, a click outside the browserfield manager invokes Manager.invokeAction(int). I used the getFieldWithFocus to verify which field has focus and then switch the focus to something else.
Cheers.
Nahuel
PD: i havent found out how to get the behaviour you want, i need that as well so if you got it working please let me know, its kinda urgent in my project =(
I actually reverted back to the older browser1 (OS4) component because the navigation problems in browserField2 (OS5) were a deal breaker for me. Luckily the OS4 browser does everything I need in terms of functionality and it has the exact navigation behavior I need and there are no focus problems mixing it with other views.