c# - ListView MouseClick event not triggered when clicking on empty areas -


i have listview control shows files inside folder in grid layout. , have context menu 3 items should behave this:

  1. if user right clicks on file in listview context menu show 3 items
  2. if user right clicks on empty space in listview first item of context view should invisible.

this add events , code mouseclick event of listview:

this.listviewfiles.mouseclick += new system.windows.forms.mouseeventhandler(this.listviewfiles_mouseclick);  private void listviewfiles_mouseclick(object sender, mouseeventargs e) {     if (e.button == mousebuttons.right)     {         if (listviewfiles.focuseditem.bounds.contains(e.location) == true)         {             contextmenufileslistbox.items[0].visible = false;             contextmenufileslistbox.items[1].visible = false;                                               }         else         {             contextmenufileslistbox.items[0].visible = true;             contextmenufileslistbox.items[1].visible = true;                             }         contextmenufileslistbox.show(cursor.position);                     } }

what happens when right-click on empty area in listviewfiles_mouseclick event not triggered @ all. cannot bring invisible item in context menu.

the mouseclick won't work unless hit item label. mousedown nice , trigger when hitting subitem label or empty space (none).

checking hitting best done using listviewhittestinfo object.

here how should work:

private void listview1_mousedown(object sender, mouseeventargs e) {     listviewhittestinfo hi = listview1.hittest(e.location);     if (e.button == mousebuttons.right)     {         if (hi.location == listviewhittestlocations.none)           {             contextmenufileslistbox.items[0].visible = false;             contextmenufileslistbox.items[1].visible = false;         }         else         {             contextmenufileslistbox.items[0].visible = true;             contextmenufileslistbox.items[1].visible = true;         }         contextmenufileslistbox.show(cursor.position);     } }

Comments

Post a Comment

Popular posts from this blog

php - failed to open stream: HTTP request failed! HTTP/1.0 400 Bad Request -

this code i'm using find latitude , longitude of place: function coords($address){ echo $url="http://maps.googleapis.com/maps/api/geocode/json?address=".$address; $json = file_get_contents(urlencode($url)); $data = json_decode($json, true); print_r($data['results'][0]['geometry']['location']['lat']); print_r($data['results'][0]['geometry']['location']['lng']); } however returns warning: failed open stream: http request failed! http/1.0 400 bad request if use above code in simple procedure works fine not in function. note: have tried curl_init()... method produced same result? instead of encoding whole url encode address part. following code work fine $add='jamshoro phase 2'; $url="http://maps.googleapis.com/maps/api/geocode/json?address=".urlencode($add); $json = file_get_contents($url); $data = json_decode($json, true); print_r($data['r
Read more

java - How to filter a backspace keyboard input -

i have code gives message when key number pressed: txtvalueofclause.addeventfilter(keyevent.key_typed, new eventhandler<keyevent>() { @override public void handle(keyevent t) { char ar[] = t.getcharacter().tochararray(); char ch = ar[t.getcharacter().tochararray().length - 1]; if (!(ch >= '0' && ch <= '9')) { system.out.println("the char entered not number"); t.consume(); } } }); now if press on wrong button , press backspace remove it, error message. how can add backspace input if statement? i have found answer: txtvalueofclause.addeventfilter(keyevent.key_typed, new eventhandler<keyevent>() { @override public void handle(keyevent t) { char ar[] = t.getcharacter().tochararray(); char ch = ar[t.getcharacter().tochar
Read more

java - Show Soft Keyboard when EditText Appears -

i have code in android app, alert dialog , keyboard, , when dialog shown want keyboard appear. not , not sure why? here code: final alertdialog.builder alert = new alertdialog.builder(this); alert.settitle("title"); alert.setmessage("message"); final edittext input = new edittext(this); input.setinputtype(inputtype.type_class_number); alert.setview(input); input.setonfocuschangelistener(new view.onfocuschangelistener() { @override public void onfocuschange(view v, boolean hasfocus) { if (hasfocus) { log.i(tag, "in focus"); inputmethodmanager inputmethodmanager = (inputmethodmanager) getsystemservice(context.input_method_service); inputmethodmanager.showsoftinput(input, inputmethodmanager.show_implicit); } } }); but keyboard not appear though edit text in focus, , tell appear why, doesn't come up? thanks in advance.
Read more