Using a EM_SETEVENTMASK message can set which notifications a rich edit control sends to its parent window. How can I intercept/be notified of these messages?
Ideally, I'd have a callback that I could register with certain notifications.
Seems like any traditional approach will do:
Instance subclassing (replace
parent's window procedure with your
own and check the messages coming
from the control of interest). Refer
to MSDN's CallWindowProc.
Hooking.
Refer to MSDN's SetWindowsHookEx.
Related
Globals.ThisAddIn.Application.Explorers.NewExplorer += new ExplorersEvents_NewExplorerEventHandler(DoNewExplorer);
I am trying to get the information from an email that I previously opened (by double-clicking) in outlook.
The code works fine until I open multiple emails. What I am finding is that when I click on an email, the inspector activates, but I am getting the information from the last active window, not the current one that I clicked on.
In the Activate event handler you can always call the ActiveInspector method of the Outlook Application class.
Note, the Inspectors collection contains all opened inspector windows, so you could get all of them or find the required one.
Firstly, your code tracks the Explorers.NewExplorer event, not Inspectors.NewInspector.
Secondly, for the Inspectors.NewInspector event, make sure you are using the Inspector object passed to your event handler rather than Application.ActiveInspector: by the time Inspectors.NewInspector event fires, the inspector might not yet be visible/active.
I'm in the process of writing an app to interface with a service running on another machine. When I ask this service for some information, this service adds the requested information to a separate queue, and sends a windows message to the calling application (my application) indicating there is a message waiting in this separate queue which needs to be decoded.
The windows message this service sends is a custom message, defined in the service code as having some constant int value. I've found examples of creating custom events in wxpython, and using TryBefore() and TryAfter() to react to these events in specific ways, but I haven't found any way to associate this NewEvent() with an int value so I can identify it when it comes in, much less any way to determine what an int value of an incoming event is.
Has anyone done this before or know of any functions I'm not aware of? I'm using python 3.6 and wxpython 4.0.
Thanks for your help, everyone.
I think this is what you are looking for: https://wiki.wxpython.org/HookingTheWndProc
When you get the custom message from the hooked WndProc you can either react to it there, or you can turn it into a wx event and send it so it can be caught by binding an event handler like normal. The wx.lib.newevent module has some helpers for creating a custom event class and an event binder. Its use is demonstrated in some of the demo samples and library modules.
I am developing a Standard EXE Project for sending mail.
I have a class module for sending email using winsock.
I have a withevents winsock variable set to the winsock control of a form.
The problem is that events are being catched in form's control event handler.
When i comment form's control event handling procedures and put a breakpoint in class module witheevents variable's event handler,i am unble to catch the events.
Please suggest a workaround.
If you really need to create a class (little c) that wraps constituent controls you create a UserControl, which can be invisible at runtime and have no UI interaction at all. Then, as the Winsock control's container, this UserControl will receive the events and you can handle them there.
I do this fairly often in order to create higher-level communication components, moving things like a message framing protocol inside. Then the container I put these UserControls onto only handles events raised when it has received complete messages for example. I've done the same thing to create an embeddable HTTP Server control, raising events back to the containing Form to process GET/POST requests with parameters and so on to provide a Web UI.
A Class (big C), Form, and UserControl are just three kinds of class (little c) you can create in VB6. "Class modules" really should have been called "UserClass" for clarity I suppose, in hindsight.
I'm now writing a Bonjour service listener class, according to the document here:
Currently, it seems working, I can receive "netServiceBrowserWillSearch:" and "didFindService:moreComing:" correctly. However, after a long wait, I cannot receive " netServiceBrowserDidStopSearch:" or "netServiceBrowser:didNotSearch:". Therefore I don't know that is the proper time for my delegate class to stop showing some UI.
Could anyone have an idea for this? Thanks.
NSNetServiceBrowser doesn't stop browsing (and call the -netServiceBrowserDidStopSearch: delegate method) until you explicitly tell it to by calling -stop. After it's found the initial services, it continues informing you as new matching services are added or old ones disappear.
How you handle this depends on how you want your app to behave. If you have a window that continuously shows the available services (e.g. like the Bonjour window in iChat), then it's best to let it continue, and contiuously update the list in response to delegate messages. If you've got more like a dialog that gets populated and then goes away once the user makes a selection (e.g like the system Add Printer... dialog), then you want to keep the browser running while it's displayed, then call -stop once the user dismisses it. If you're waiting to find just one specific service, then you can call -stop once you've found and resolved it.
I am working on an Outlook extension that requires making a change to a MailItem open in a compose window if the SendUsingAccount property is changed via the GUI. I would like to be albe to apply my changes automatically, but I cannot find any events that are raised when the user makes the change. I have tried listening to the following events with no success:
mailItem.PropertyChange
mailItem.CustomAction
mailItem.CustomPropertyChange
Are any events raised when the SendUsingAccount property changes?
No, is the short answer.
You could hack up a timer to check for the change on the property.
Marcus