drag - Flicker on DragMove of Border-less WPF Custom Window -


i have custom, border-less window intended act base form future wpf projects. i've managed simulate near of native window behaviours, i'm having problem dragmove. wanted window reposition above task bar when user drags title bar behind windows task bar, whole window visible. managed overriding onlocationchanged method, because mouse related handlers blocked during dragmove.

this works charm, except flicker when dragging title bar along windows task bar. can see trying redraw window have been, down below, , redraws window again in intended place.

how can interrupt redrawing properly? many thanks!

this, this, this , this question did not me @ all, unfortunately. here extract of code:

protected override void onlocationchanged(eventargs e) {     base.onlocationchanged(e);      var activescreenheight = system.windows.forms.screen.fromhandle(new windowinterophelper(this).handle).workingarea.bottom - toolbarsnapthreshold;     if (activescreenheight < this.restorebounds.top)     {         this.top = activescreenheight - this.restorebounds.height + toolbarsnapthreshold;     } }  protected void maximizeorrestore() {     this.windowstate = (this.windowstate == windowstate.normal) ? windowstate.maximized : windowstate.normal;     this.lastnonminimizedstate = this.windowstate; }  protected void restoreanddragmove(mousebuttonstate leftmousebuttonstate) {     if (leftmousebuttonstate == mousebuttonstate.pressed)     {         if (this.windowstate == windowstate.maximized)         {             var activescreenwidth = system.windows.forms.screen.fromhandle(new windowinterophelper(this).handle).bounds.width;             var windowcurrentwidth = this.restorebounds.width;              var windowpositionadjustx = this.relativemousepositionx - (windowcurrentwidth / 2);              if (windowpositionadjustx < 0)             {                 windowpositionadjustx = 0;             }             else if (windowpositionadjustx + windowcurrentwidth > activescreenwidth)             {                 windowpositionadjustx = activescreenwidth - windowcurrentwidth;             }              this.windowstate = windowstate.normal;             this.lastnonminimizedstate = this.windowstate;             this.left = windowpositionadjustx - this.relativemousepositionx + this.originalmousepositionx;             this.top = 0 - this.relativemousepositiony + this.originalmousepositiony;         }          this.dragmove();     } }  private void window_titlebarclicked(object sender, mousebuttoneventargs e) {     if (e.leftbutton == mousebuttonstate.pressed)     {         this.relativemousepositionx = e.getposition(this).x;         this.relativemousepositiony = e.getposition(this).y;         this.originalmousepositionx = system.windows.forms.cursor.position.x;         this.originalmousepositiony = system.windows.forms.cursor.position.y;          if (e.clickcount == 2)         {             this.maximizeorrestore();         }     } }


Comments

Post a Comment

Popular posts from this blog

node.js - Bad Request - node js ajax post -

i'm using express 3.0 , node v0.11.0. have button submits form , i'm using ajax post data json object node server. client code is: $('#contact').submit(function(e) { console.log('submit called'); var formdata = json.stringify($('form').serializeobject()); console.log(formdata); $.ajax({ url: "http://localhost:3000/savedata/", type: "post", datatype: 'json', data: {objectdata: formdata}, contenttype: "application/json", complete: function() { console.log('process complete'); }, success: function(data) { console.log('process sucess'); }, error: function() { console.log('process error'); }, }); return false; }); then on server: var express = require('express'); var app = express(); app.set('views', __dirname + '/views'); app.set('view engine', 'jade'); app.use(express.bodyparser());...
Read more

Why does Ruby on Rails generate add a blank line to the end of a file? -

running rails generate controller foo home results in: class foocontroller < application controller def home end end (there's nothing on line in actual file, blank line) is there purpose blank line? it's common use newline indicate end of line, last line. many editors (like vi, use) add in newline silently. consensus text files (especially in unix world) should end in newline, , there have been problems historically if wasn't present. why should text files end newline? the tool used count lines in file "wc" counts newlines in file, without trailing newline show 3 instead of 4. it improves readability of templates used in generator. consider: https://github.com/rails/rails/blob/master/railties/lib/rails/generators/rails/controller/templates/controller.rb to remove trailing newline, template have last line of: end<% end -%> instead of: end <% end -%> that seems less readable me. the discussion below refers ...
Read more

keyboard - Smiles and long press feature in Android -

i've created android keyboard. how add features inserting smilies, , using long keypresses display symbols? to create long-press behavior allows select several options pop-up menu, follow guide (specifically pop-up menu section): http://developer.android.com/guide/topics/ui/menus.html smileys (also known emoticons) combination of keys, understood programs , parsed same way. have do, when clicks smiley face on keyboard, simulate pressing of key combination matching emoticon. example, when clicks smiley, should simulate key presses ':' , ')' :). here's list of emoticons: http://en.wikipedia.org/wiki/list_of_emoticons
Read more