so, here's the deal. I have some program who needs to call some event when i click on a word or phrase. I was thinking on html hypertext but not sure. My question is, how should i edit hyperlink event to call any function. Any other suggest will be appreciated.
Thanks!
It doesn't look like a good idea to turn every word in a text in a hyper link. If you really want to do this, you can just use wxHtmlWindow and handle its EVT_HTML_LINK_CLICKED event.
But a better idea would probably be to use either a plain wxTextCtrl or wxRichTextCtrl, depending on the kind of contents you want to show, handle EVT_LEFT_UP in it and use HitTest() method to find out where did the click occur exactly.
Create the link: wxRichTextCtrl::BeginURL
Bind your handler to the event: http://docs.wxwidgets.org/trunk/overview_events.html#overview_events_bind
In handler, check which mouse event: wxTextUrlEvent::GetMouseEvent
In handler check which URL clicked: wxTextUrlEvent::GetURLStart
If all OK, call required function.
Related
I'm using ag-grid and I'd like to save the layout/state of the user. Pretty much something like this
This solution forces the user to click on the button to save the preferences ("Save state"). There is some other way/event to detect that the user changed the state of the table (in order, to me to save and avoid to force the user to click on a button for that)?
I was hopping to find some method here but i didn't..
I initially had code that listened to all of the applicable events from the grid, but ultimately, I found it easier to just save the entire grid state in the component's onDestroy method, regardless of whether anything has actually changed.
Found my answer here.
All the events are here but i prefer to add a global event:
addGlobalListener(listener) Add an event listener for all event types coming from the grid.)
Source: AgGrid javascript grid api
I am writing a simple GUI, in which I have a ComboBoxText. I write a log message when ever the user clicks on the ComboBoxText.
I have tried almost all the button release and popup signals but no results. The only thing which works is signal_changed() but I don't not need that. Please help me, below is my sample code :
myCombo->signal_button_release_event().connect(sigc::mem_fun(this,&ComboBoxText::ComboInput),false);
and here is the call back function:
bool ComboBoxText::ComboInput(GdkEventButton *pEvt) {
// Here do the desired stuffs !!
return false; }
Use GTK+ property popup-shown. Not sure about Gtkmm syntax, probably property_popup_shown().get_value().
If you need a signal to listen to, connect to popdown or notify::popup-shown (the latter is invoked when property value changes; again, I'm not sure about Gtkmm syntax).
The idea here was to fire an event when the ComboBoxText is clicked. After some readings I figured it out that the ComboBoxText does not fire any on_click event as such.
One could mask a key press event (which by the way gets fired) and call the signal handler. This might not be handy for people who specifically looking for a on_click event but for those who are working with a keyboard or touch screen device. Here is a small chunk of code :`
mCombo.add_events(Gdk::KEY_PRESS_MASK);
mCombo.signal_event().connect(sigc::mem_fun(this,&ClassName::Handler),false);
cheers :)
I have a CMFCToolBarComboBoxButton on a CMFCToolBar. I want that whenever the CMFCToolBarComboBoxButton gets the focus its entire text will be selected.
What is the most elegant way to implement it?
Thanks a lot!
Adi Barda
Not sure what the most elegant way is, but I guess the most common way to do this is to make a derived class and override OnSetFocus (exact method name not checked), and call SetCurSel() on the contained edit control. WM_FOCUS is only send to the control and there is no notification message for it afaik, so you'll have not many options besides doing something that will make the control handle the event - be it reflect it to somewhere else, or just implement the behavior itself. (I guess theoretically there's all sorts of finicking one can do with intercepting messages, but that's certainly not the most elegant way...)
That should be the default behavior of the standard edit control. If it's not, something else is removing that behavior explicitly. Maybe you can find some flag you can set on the combobox button?
If not: subclass the edit control, handle the WM_GETDLGCODE message. Return a value ORed with DLGC_HASSETSEL. If the control has this flag set, then Windows will automatically select all text on focus.
I have setup richedit control as a chat window and I've no idea how to remove the blinking caret from the control, does anyone know how to do that in edit/richedit control?
Use HideCaret().
Based on this page, you need to handle the EN_SETFOCUS Windows message and call HideCaret(). The docs there say that calls to HideCaret() are cumulative, so you probably should only call it once (use a static variable to remember whether it has been set), or alternatively call ShowCaret() in response to EN_KILLFOCUS.
In win32, how do I setup a callback mechanism for RichEdit I have not created myself?
PART 1
I'm reading from a textedit field in another application's GUI. This works just fine now, except after the first read I'd like to fetch only new or modified lines. In GTK+ or Qt I'd just install a callback on some signal the field edits when its changed, but how does it work on Win32?
My MSDN searches result with nothing useful, probably because I don't know the exact term to search for. The class of the textedit is RichText20W, and it has some messages that are probably used somehow, though that article just discusses using them for the parent of the class.
PART 2
Also, if there is no such "text changed, here is the newly inserted text" callback which returns the new content immediately, I need some way to easily detect what is new. From top-of-my-head:
Have a marker at the end of the text block we've read, and only read between that and the end.
Store what we've read previously, and after a second read, remove the duplicate part from the latter to have the newly inserted stuff.
Option 2 might not be viable, since the textedit can contain any amount of text. The marker part sounds doable, but yet again, my feeble Win32 skills and horrible Win32 function names prevent me from finding the right way to do it.
Note that all these must be doable for a textedit I do not own and have not created, they belong to a third party process.
Code samples in C++ highly appreciated.
Disclaimer
Obviously, if there is some better way of doing it, let me know. I only assumed callback would be the way to go based on my previous experience with GTK+/Qt. Feel free to show me the path :)
Win32 controls don't work on message-specific callbacks that you can subscribe to. They just send messages to their parent window when something happens, in this case EN_UPDATE, EN_CHANGE and all that. Even these events don't tell you what text changed. They only tell you that it did change.
You could subclass the parent, but the documentation for SetWindowLongPtr explicitly says you "should not subclass a window class created by another process." Something like this is probably possible with hooks, but I haven't used them enough to say for certain how you'd actually do it.
I realize it's an old post, but this article seems to be doing something similar.
Based on Joel's answer, I quit looking for callbacks and just made a small class that hooks itself (not by a real API hook though) to the richedit and polls it once a second for content length, and if it has changed since the last poll, it asks for the content, compares that to previous known content and emits a signal with the changed content.
This seems to work OK for this purpose, but if someone knows a better way still (some real and tested way of doing it via API hooks or something), please post.