c# - Empty space appears at the top of ListView when removing Groups -

-

My music player uses ListView in description mode to show tracks, and list albums with group list With track.

I have created an event that removes all the albums in an album, when the album's list view group is middle-click, when the track is deleted, the ListView is not scrolled properly. If ListView is scrolled, the album will be deleted, but between the header and the first group, large non-clickable spaces appear at the top of the ListView.

The first image, 3 albums in the ListView (scrolled)

Enter image details here

The second image, the last album removed, everything is fine!

Enter image details here

OK , Then scroll down at the time of removing a group of inventory items

The third image, 3 albums in the list W. (scroll down)

Enter image details here

Fourth image, last album deleted, spaces appeared on top, and last track If ListView is not visible at all!

enter image details here

not me It seems to have something to do with my code, but there is a bug in the ListView? Did anyone see the same behavior? Is there any way to stop it from happening?

Edit: Added code which removes the item (as the user has requested) 

  list & lt; ListViewItem & gt; DelItems = new list & lt; ListViewItem & gt; (); To create a list of items, foreach must be removed (ListView List 1 group in group list.) {If (Convert.ToInt32 (group.Tag) == groupNumber) // Individual number in tag group of all groups { Foreach (Items in ListViewItem group.Ams) {delItems.Add (item); }}} Foreach (visible item items in the list) {item.Remove (); }   
 EDIT2: Code was added to check that the group was clicked  
 Since there is no real way to handle group clicks, I have it ugly Created in the manner. But this works first, I used the MouseDown event in ListView, then I check that there is an item where the user clicks. If the user clicks the group, the item is zero, and for the loop, I grow and check that if the item can now be found when the object is finally found, we know that the item is the group that we clicked on Is from That's why we receive the item group tag, where I tell you what this group is.  
  See private zeros list 1_MouseDown (Object Sender, MouseEventArgs e) {ListViewItem Item; // content is not greater than 25 pixels (for int i = 0; i & lt; 25; i ++) {item = listView1.GetItemAt (E.X, EI + I); If (item! = Null) {if (i> 1) is greater than // 1, because the difference of 1 pixel during the list is when using groups (if (e.button == mouse button) RemovePlaylistGroup (Convert.ToInt32 (item.Group.Tag)); and {if (e.button == mousebutton.made) remove playlist item (item index);} breakdown;} <}    
 
 
 All this was happening because  ListView  apparently fire  Form1_Layout  Event there, I use listView1 to use  listView1.BeginUpdate () ...  , If layout changes messes my view any kind.

Comments

Post a Comment

Popular posts from this blog

c# - Textbox not clickable but editable -

-
I have a small form with 10 text boxes, I have set them in the correct tab order. I want them on my tab service I was wondering if there is a way to set the text box so that they can be selected for editing until they are tabbed. That is ... I do not want the end user to edit the text box to click on them, I just want to make them editable through tabu. this should do the trick public partial category poor text box: Text Box {Safe Override Zero WndProc (Ref: Message Message) {if (m.msg == (Int) WM.LBUTTONDOWN) {Return; // mount down events} base.WndProc (ref m); }} Window message enum can be found. How to do this without anherizing: text box : class EatMouseDown: netwindows {safe override zero WndProc (ref message message) {if (m.msg == (int) WM.LBUTTONDOWN) {return; } Base.WandProc (Ref M); }} Safe Override Zero Onload (EventEurge E) {base.OnLoad (e); How to do this without any part: left a clean part, whatever is important, this can be a buggy but it works R...
Read more

Matlab transpose a table vector -

-
An embarrassing simple question seems to be, but how can I move a Matlab table vector? aTableT = aTable '; I tried a standard syntax for the simple interaction of a line vector to a line vector aTable : ATableT = reshape (aTable, 1, Height (aTable)); and aTableT = rot90 (aTable); According to the head, the last time table should work for table, see. However, I get this error code: Error type in using table / permit (line 396) Undefined function 'permute' for the input arguments. Error in rot 90 (line 29) b = magnitude (b, [2 1 3: ndims (a)]); NB: fliplr is not useful either pretty sure I have covered clear angles - any ideas? Thanks! Try changing your table into an array, move it, then back to a table In other words, try doing this: aTableArray = table2array (aTable); ATableT = array 2table (aTableArray. '); I have also read the document for rot90 , and it says that rot90 is definitely working for tables Do, and I find you...
Read more

ios - Adding an SKSpriteNode to SKScene from a child SKSpriteNode -

-
I have a SKScene where I am adding an SKSpriteNode I have subclassed the SKSpriteNode class to create this node. In the subclass I am defining some SKActions on Sprite. What do I want to do when the end of this phantom ends the SKAction sequence, then I add a new Prayer node to this scene. How is this possible. The following code is mine: The code for the sequence is that I'm running on the Scansprinitode subclass (TEMissileNode): - SKAction * moveDown = [SKAction moveToY: Self.position.y - 20 Duration: 0.2]; SKAction * animation = [SKAction animateWithTextures: textures timePerFrame: time / 7]; SKAction * moveMissileProjectile = [SKAction Moving: Pointoffscreen Term: Time]; SKAction * group = [SKAction group: @ [animation, movement projectile]]; SKAction * Sequence = [SKAction Sequence: @ [Hilldown, Group, [SKAction removalFromParent]]]; [Self run action: sequence]; From the main scene, I call those actions that execute these tasks TEMissileNode * missile = [tmissil...
Read more