VS 2010 ControlStyle.Selectable Not Functioning Properly?
Aug 20, 2011
I have my own control which inherit System.Windows.Forms.Control The only functionality that this control requires is the capability of losing and gaining focus. I learned this requires the control style of selectable to be applied which is descriptive as exactly what I'm in need of, "If true, the control can receive focus.".
However after applying this style in my code, the control still refuses to have anything to do with gaining or losing focus. Other styles I have applied to this particular control are as fallowed
UserPaint, AllPaintingInWmPaint, and SupportsTransparentBackColor. I'm not sure but perhaps one of these other styles interferes with the one that's not working properly.
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Mar 27, 2010
ok This is my code inside timer1
Dim rand As New Random
Dim rand1, rand2 As String
Dim first, last As String
[code].....
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Jul 18, 2010
i want the user to be able to select one from the combobox but i dont want them to be able to type in there own into the actual combobox, i tried Enabled property but then you can pick one either. And i couldn't find the IsReadOnly property on the ToolStripComboBox,
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Mar 3, 2009
Right, I'm making a program where the user enters a number in both boxes which is between -10 and +10, and when they press the = button, it adds the two numbers together. If the user enters a number which is not between -10 and +10, an error message appears which warns the user of this.At the moment, it's not quite working for me. If I enter a number outside of this range in either or both of the boxes, it brings up a warning box, but once I click 'OK' in that window, another window is brought up with the answer to the calculation.In fact, even if I enter a number which is between -10 and +10, the error message still appears when I click on the '=' button and then the other window has the answer to the calculation.[code]
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Mar 29, 2012
i cant coordinate my dialog that accepts a password to my form that requires it before its command.
Heres the code for the Dialog:
Imports System.Windows.Forms
Public Class ReqPassword
Public correctPW As Boolean
[Code].....
after the dialog reqpassword has closed, the textbox doesnt show my retrieved values.
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Feb 9, 2011
First of all i want to say i feel very rude as my current posts only consist of me asking questions and never posting to give answers. im still learning and do not want to give people diff advice and sending them down the wrong path.I am doing an assignment for my vb.net course and im having a problem with tabcontrol. I originally didnt do my code inside a tab control. Then i had to copy all the code and button etc over to the tab control then the code completely stopped working. I copied the code then deleted it and pasted it back into my project and it worked again. But it seems everytime i restart my laptop the code stops functioning and i need to copy delete then paste to get it working again!I need to hand this assignment in shortly and i dont want to if my code is working intermittantly..
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Jun 22, 2010
I am looking for a code snippet which opens a image, creates a clone of this bitmap in memory disposes this opened image so that all handles are closed.
Usually we can open a bitmap using this[code...]
the following code however keeps the Image File locked until the application is running, any suggestions how to dispose it properly. (So that no handle is left open )
Things i already tried: use dispose method of bitmap <= doesnt work (need to write implementation)
Using Block also doesnt work.
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Apr 14, 2011
Is it possible to make one or more items in a checked list box collection non-selectable? I wnat to present the items to the user but not allow selection of them.
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Apr 19, 2009
I have a radar which works by drawing monsters onto a paint panel, which can be made transparent so that only the drawn items are shown on screen, but when you mouse over the drawn items they are selectable so it disturbs the game, is there any way to set the drawn items so that they cannot be selected? basically ignored by the mouse cursor.
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May 17, 2011
I would like to build a form that has multiple picture boxes that a user can browse through and click on each one to select multiple items. The pictures will all be pulled from a single directory. After they have selected the items, they will click a button that will change the names on all the selected pictures. I know how to change the names, but I need some assistance with the picture box and loading the file names into a list or array. Not sure what it would be called. I am not even sure really if I would use a picture box or some other form item.
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Jul 25, 2011
I am building a application in VB 2010 Express, that tracks sales leads, I have everything working except 1 last item. I want the users to be able to select a different background image to match their industry. I have all the images embedded, but can't figure out how to allow the user to select.
Preference is to have a separate form for the user to cheese on launch, but I am OK with it just being a dropdown in the lower left corner of the app.
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Feb 13, 2012
So I created a store procedure on my Sql Server 2008.
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Jul 18, 2009
i added one checkbox column in datagridview i.e datagridcheckbox column but when i run and i want to select checkbox it is not going to select how to to do checkbox become selectable in datagridview in vb.net windows application
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Nov 12, 2010
I wonder how you can make a picturebox selectable at runtime and also change the size and location during runtime?
Well I know how i can change the location of a picture box during runtime but that is only with a picturebox that is already defined in the form before runtime.
So I write an event for that particular Picturebox.
But now i want to do the same thing with a picturebox that a user can add during runtime and then the user should be able to select and move the picturebox.
So now i can't add code to the picturebox event so I wonder how you should do this. ( Maybe with reflection?)
And what if the user added 10 picture boxes and selects a certain picturebox. How do you make it possible that the picturebox the user clicks on is selected?
Should you store each picture box location on the Panel and then when the user clicks on a certain pixel in the panel where a certain picture box is it get's selected?
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Apr 4, 2011
I am trying to find information on code to make the lines of a jpg file that have been loaded into a VB.NET WebBrowser control into selectable objects.
I have no idea what to search for or the correct terminology.
This is very similar to using the line tool in word or excel, after you draw a line you are able to select it.
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Oct 30, 2010
I'm making my own winforms button, mainly to be able to control more aspects of a regular button. So far, I've figured out how to control the looks of the button properly, but now I need to implement the changes I've made. I can draw what I have so far, but it flickers even with double buffering...
Inherits System.Windows.Forms.Button
Protected Overrides Sub OnPaint(ByVal pevent As System.Windows.Forms.PaintEventArgs)
MyBase.OnPaint(pevent)
[code]....
So far I just want to get my gloss working.I'd also like to know how to control some of the more tedious properties of a button, such as corner radius and how I can make the flatstyle of the button "Flat" all the time without the option to change it (this is so that I don't have to worry about borders and stuff).
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Jun 19, 2011
I have a progressbar which receives the amount of Sub directorys within a main directory as a Maximum value and when i run the program It goes through the directorys to grab all the files within the subdirectory.
This is the code below which is updating the progressbar.Foldercount is an incrementer which increments by one for each folder it enters.
Dim percentage As Double = folderCount * 100 cirFolderCount.Maximum
cirFolderCount.Text = percentage.ToString
cirFolderCount.Value = Convert.ToInt32(percentage)
On the test directory which has 4 sub directorys I get a maxvalue of 4 and the min value is set to 0 The code above returns the value of 25.0 when entering the first folder which is correct (25% of 4 is 1),But the progressbar does not fill 25% of bar once this folder is processed.
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Feb 25, 2010
I have a UserControl with a property called "Type". This can have any combination of three values, say
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Oct 11, 2011
I have a ListView in which the items in the first column are selectable with a mouse click. How to I make these items non-selectable?FWIW, I've dug into the properties for the ListView but not been able to find which parameter is the right one to change.
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Nov 20, 2010
I've been trying to search out the answer to this question, but i couldnt find any. How do set the calendar component to display only certain dates, say 6 weeks from current date?
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Mar 2, 2012
I'm having issues trying to get file system watchers working properly, I'm not sure whats not right here, I want to use multiple, but I can't even get one of them to fire on an event... simple form with a listbox for folders to watch and a listbox to list changes detected and a command button to launch watchers.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
lstFolders.Items.Add("C: emp1")
lstFolders.Items.Add("C: emp2")
[code]....
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Sep 11, 2011
I'm trying to make a program of mine into a multithreaded application, but I've hit a pair of snags that I documented in the following code. I can expand this stub into a more efficient version of my existing application.
[Code]...
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May 13, 2011
Does anybody know the code to refresh and reload desktop icons, you know how after installations of programs it sometimes refreshes the desktop? That is exactly what I need and what I am looking for. Someone please help me out here because I tried searching on google and could not find any proper code.
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Mar 1, 2011
I borrowed part of this routine to download files, and it works great; except when I download text files the returns aren't written into the outputted file. I've tried different web request and techniques with no luck in solving the problem.
Test file:[URL]
Private Sub DownloadFile(ByRef FileSource As String, ByRef FileDestination As string)
Dim request As WebRequest
Dim response As WebResponse
[Code].....
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Jan 6, 2012
End A statement which as far as i know doesn't close you program properly and hides errors. Right now i'm being forced to use end because i don't know how else to close my program properly. I'm not sure where my problem is but some of you should be able to fix it. I'm trying to make a game using directx with a game loop. This code is the skeleton of what i'm making.
Public Class Form1
Private ProgRunning As Boolean = True
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Me.Load
Me.Show() 'Make the form appear
Me.Focus() 'Give the form focus
[CODE]...
This code runs alright because end is being used but if you rem end out the error which it's hiding comes out. The error is "Object reference not set to an instance of an object." I'm not totally sure but i'm guessing that the error is refering to the form.
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Nov 12, 2009
how to properly use the "SendMessage" and "PostMessage" API's. I'm trying to make a simple program that will draw a picture, in the background, in Microsoft Paint.how to "Move the Mouse" and "Hold/Click the Mouse" in the application without having to actually "Do it"
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Dec 23, 2010
I have
Dim bv As New Specialized.BitVector32(25)
Dim sb As String = "0b" 'I resisted the urge to use a stringbuilder
For i As Integer = 31 To 0 Step -1
[Code]....
I only wanted to use BitVector32 for bit flags and I wanted the output to be
0b00000000000000000000000000011001
How do I set this up properly?
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Apr 8, 2010
In the project�s btnReadNumber click event handler, replace the code in the try section of the try/catch block � the two if statements and the unconditionally executed code � with one if-else statement that performs the same tasks. Use the And operator to write the if-statement�s condition.What I don't understand is how am I supposed to use the 'And' operator so that when I insert a number between 32-16384 in the text box it'll allow it to go through and at the same time not allow any numbers lower than 32(lower_bound) and higher than 16384(upper_bound) to go through.I've use the 'Or' operator and that was simple, but with 'And' I'm not understanding it.Remember it has to be with the 'AND' operator. I bold the area where my problem is at. It's obviously not the right answer, but that's where I was stumped.
Dim sum As Integer = 0
Const upper_bound As Integer = 16384
Const lower_bound As Integer = 32
[code]....
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Feb 15, 2012
Value not saving properly [code]...
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Mar 14, 2011
In my word processor I have an 'Open' option on a menu strip. Here is the code for it:
Private Sub OpenToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenToolStripMenuItem.Click
With ofdFile
.Title = "Select a file to open"[code]....
For some reason when I press the 'Open' item and open the ofdFile dialog box .txt files do not appear even when I have the 'Text Files' filter selected However, when I use the 'All Files' filter they appear. And the 'HTML Files filter is also working properly.Why are the .txt files not appearing when I use the Text Files filter?
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