Can't See Underlying Controls Through "transparent" B?
Oct 5, 2011
Ugh the graphics of my programs give me more trouble than functionality... Okay, I have a borderless form with its transparency key set to its background color. I have a richtextbox a little smaller than the form clinging to the bottom left corner of the form.At the top right corner of the RTB, I have an overlapping button control that's clinging to the top right edge of the form (it's overlapping the top right corner of the RTB.) The image I have selected for the button is a circle, so I changed the flatstyle to flat, made the border 0, made the mouseover and mousedown background colors transparent, and of course made the control's background color transparent. DICproblem1.bmp (157.04K)Number of downloads: 16There's also one more problem.
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Mar 7, 2008
Question:Is it possible to make a userform transparent but have non-transparent controls?I notice changing the opacity of the userform will change the opacity of controls embedded on it.
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Apr 5, 2010
I know Opactity controls a form's tranparency but the controls have the same level of tranparency too.
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Dec 21, 2009
if I set the property Opacity = 0, a form becomes transparent... but become transparent all it controls, too!how to make transparent ONLY the form and let the controls, labels, buttons etc. visible??
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Aug 20, 2010
When I make my form Opacity 0% everything disappears including controls that I know will happen im not dumb ok so I tried another method using Transparency Key I had success BUT my problem there is that when I have a picture box and an image IN the picture box around the image is the Form Background color so lets say I picked Maroon for Form1.BackColor, The edges of my image is Maroon
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Feb 16, 2010
I have made one game Tic tac toe. Where the use could place a X or a O i used a empty label with back colour "transparent" for them to click on.I have now come round to making a Connect 4 game in the exact same solution, once again i am using empty labels for the users to select which slots to place there counters. However when i select "transparent" as these labels back colour they still dont go transparent.Its now happening on all forms, all projects, is there another attribute that controls if a background can be transparent?
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Jul 10, 2010
How can I make a panel on my form not become transparent when the form is set to transparent? I have the form at 80% opacity, but I don't want the panel to be transparent.
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Feb 16, 2012
I am having trouble finding a way to make the form transparent but the controls still visible. The only transparency I have been able to get to work on the form is
Me.Opacity = <value between 0 and 1>
but that affects all the controls on the form Is there a way to make the controls not inherit this property from the form? Is there another way to make the form transparent? I have buttons and a checkbox that I don't want to be affected by the transparency at all, and a picturebox that I do want to be able to control the level of transparency. Currently, I'm using a slider bar, and controlling the opacity of the form, but that makes everything on the form transparent. I'd actually like for the form itself to be completely invisible, and for my slider bar to control the opacity of the picturebox only.
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May 1, 2012
if I set the property Opacity = 0, a form becomes transparent... but become transparent all it controls, too!how to make transparent ONLY the form and let the controls, labels, buttons etc. visible??
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Dec 31, 2011
I have multiple picturebox controls in my form. Both of them contain an image with a transparent background. I want them to be on top of each other. I've already set their BackColor property to Transparent, but when I place one on top of the other one, the following happens: [URL]. How can I make them transparent while they are on top of each other?
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Oct 30, 2009
I have a 75% transparent form and I would like the controls and elements that I place on it to be 100% opaque. I've searched but didn't turn up any results.
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Aug 17, 2009
Is there a transparent drawing surface I can place over a group of controls?
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Jun 27, 2012
I am trying to use (and this may be my problem already) e.Graphics.CopyFromScreen() in the OnPaint() method of my control to prepare a background onto which I can draw the content of the control. The goal is a tool-tip with rounded corners and other specific features to replace the default Windows tool tip.
Ideally the tool tip could be antialiased and blended into the backdrop, however at a pinch I could tolerate an aliased boundary. This may also be necessary as the control will often be covering a control with an OpenGL overlay and the whole blending procedure may end up a nightmare.
I have created a custom user control, a persistent instance of which belonds to my applications's main form, overriding the OnPaint and OnPaintBackground methods. The application of transparency however is challenging. As I understand, the graphics object passed to the paint method starts with a copy of the current VisibleClipBounds, where generally the first move is to clear the control with a solid colour and start drawing the main features. My first thought was to bypass the fill and start drawing on the captured background. For the first redraw this works fine, but subsequent redraws keep the previous content instead of re-capturing the backdrop. I hoped that CopyFromScreen would specifically eliminate the currently drawing control from its capture so as to start from a clean base but this is not the case, it captures the rectangle of the new location including the image of the previous location if it is in the bounds.
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Feb 8, 2009
I have a form with transparent background (using png file).All controls placed over it becomes black at start then they change there color and comes to there original state on MouseHover. Its not the transparency keys problems since the transparency key color is different that controls back color. What can be the problem?
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Sep 18, 2009
I can't remember exactly if this is possible or not but what I am attempting I would think should theoretically be possible. I know it is possible in WPF but the company I am working for doesn't want to make the transition just yet. Basically what I want is to use a background image on a form for the background and I have a docked control on the right and left. I have set the background on both of these docked controls to transparent however it is showing the back color rather than the background image. I tried, rather than setting the background image property, to override the onpaintbackground and onpaint events and use e.graphics.draw(picture, me.clientrectangle) but it still seems to just pick up the backcolor as the true transparent background so I'm wondering if it's possible to get it to show the background image through the control rather than the backcolor of the form?
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Oct 27, 2010
[code] how to make the part that drops down semi-transparent or completely transparent resembling floating text. So that I can see the form underneath.
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Jan 5, 2010
I have a program that opens a FormReportViewer. I get an error when I close my program...COM object that has been separated from its underlying RCW cannot be used.
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Dec 13, 2011
I'm designing an ATM where I have to allow a user to "insert" his card and then conduct transactions. After the first user is done, without closing the application, another user should be able to use the ATM. However, whenever I try to log the second user in, I get the following error: COM object that has been separated from its underlying RCW cannot be used.
My code for the opening screen is as follows:
Imports System.Data.OleDb
Public Class StartScreen
'Form-wide variables
[code]....
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Jul 14, 2011
Is there something like VBA's ScreenUpdating=Off in VB.Net? I mean, I want to manage the underlying data and wish it would not reflect on the screen until the end.
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Jun 15, 2012
I'm trying to show a modal form below my text how can I set form position?
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Aug 3, 2011
I am retrieving data from my database using a TableAdapter. I was wondering if there is some way I can tell (or be informed) that the data has changed and I therefore need to do another Fill? That way I can just Fill on demand rather than every time the user requests to see the information and I am forced to do a Fill before showing the data because I don't know if is current or not. For the record I am using an ODBC connection string to access a Pervasive PSQL database
EDIT I was thinking I could check the last write time of the MKD file to check if this has changed but this doesn't seem to be reliable as it is not written to until the connection is closed. Does anyone know the circumstances when this is written?
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Mar 27, 2012
I need to force a DataGridView cell to update the underlying DataTable.I fill a DataTable using my adapters Fill method, then set that DataTable as my DataGridView's datasource. Lets say one of my DataGridView columns is a CheckBox column.If I left-click a checkbox in the first row and then left click a different row in the DataGridView the underlying DataTable_RowChanged event fires, which tells me the first edit I did has gone to the underlying DataTable.If I left-click the checkbox in a row and then right-click the column header to display my context menu the DataTable_ RowChanged event doesn't fire because the DataGridView row is still in edit mode.I've tried Me.DataGridView.EndEdit(),but that doesn't cause my RowChanged event to fire,I need to ensure my underlying DataTable matches the data in the DataGridView, because I am getting a subset of my original table.[code]
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Apr 25, 2012
I've got a databound query in my application which is querying the "Customers" table in our database.I've created this directly from the ComboBox's datasource creator in the Design view.Various bits of code created in the designer include:
Me.CustomerBindingSource.DataSource = Me.CustomerDataSet
Me.ComboBox_Customers.DataSource = Me.CustomerBindingSource
What I've done in the first stage of developing this feature is to show my users a ComboBox showing a specific subset of the customer list by applying a filter to the BindingSource.
Me.CustomerBindingSource.Filter = "someColumn = 3"
What I want to do on a second pass is to allow the users to type a specific bit of information into a textbox and check whether it appears in Me.CustomerDataSet like so:
Dim x As IEnumerable(Of CustomerDataSet.customerRow) = From cust In Me.CustomerDataSet.customer Where cust.custno.Trim = "test"
If x.Count <> 0 Then
At this point, I have a customerRow object. I want to check whether this customerRow object appears in the list presented to users in Me.ComboBox_Customers via the filtered Me.CustomerBindingSource. Me.CustomerBindingSource does not (directly) contain customerRow objects, it contains Object objects.How do I find out whether Me.CustomerBindingSource contains the customerRow object at whatever lower level?Also Once I've determined that Me.CustomerBindingSource contains the item, how do I select that entry in the ComboBox?
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Oct 29, 2010
I have a button on the page and a gridview with checkboxes on the first column. The gridview is bound to a List. On buttonClick, I need to retrieve the underlying bound data item (MyEntity) for each selected row. How can I do this? I can't simply recreate MyEntity based on the gridview columns, because I am not displaying all the fields of MyEntity. I need a way to get a hold of MyEntity based on the key (MyEntityId).
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May 10, 2011
I've written a custom class MyClass and marked it with the <Serializable()> attribute. I have a set of binary files on my hard drive that I've serialized using BinaryFormatter that came from instances of MyClass.
I've recently changed the structure of MyClass slightly (added some properties, deleted some properties, changed a few methods, etc).
What happens when I try to deserialize the existing objects to this changed class using the code below? I've tried it and not had an error thrown or anything - but surely it can't deserialize properly when the class has changed? Is there a way I can get some useful information out of the serialized files even though I've updated the class?
Here's the code I'm using to do the serialization:
Public Sub serializeObject(ByVal obj As Object, ByVal outFilename As String)
Dim fStream As FileStream
Try
[Code]....
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Mar 2, 2011
I have an object databound to a WinForm. One property, BOLNumber is bound to a textbox on the form. When you change the value in the form, the underlying BOLNumber property is changed. But the property setter does some "formatting" to the value. I want to BOLNumber textbox to reflect the changes to the value made in the property setter immediately upon the textbox losing focus. I tried implementing the INotifyPropertyChanged interface, but I am either doing something wrong or misunderstanding something it would seem. How do I get the databound control to reflect the changes to the underlying data source?
Public Event PropertyChanged As PropertyChangedEventHandler _
Implements INotifyPropertyChanged.PropertyChanged
Public Property BOLNumber As String
[code]....
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Jan 19, 2010
I'm looking for a simple example in VB2008 code.I have the Northwind DB installed on one of our SQL servers.
I've worked with the Datagridview on serveral occasions but never used its update,delete or add functions. I've Googled around the web, but could not find a simple example.
Whats the best way to do this and implement it using LINQ?
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Oct 3, 2009
find the underlying DataGridView (DGV) when responding to a Right Click on a ToolStripMenu (TSM).I have several DGV's all using the same ContextMenuStrip (CMS) [DGV.ContextMenuStrip=CMS]I have six ToolStripMenuItems under the CMS. I thought I could just add a unique handler for each of the ToolStripMenuItems and be a happy camper on each Right Click...But I cannot figure a way to decode the underlying DGV. There doesn't seem to be any relationships between DGV and TSM and none between CMS and TSM.Is this path a dead end? If so how should one do it? FYI my DGV data is unbounded.
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May 11, 2012
I have a Windows Form application with a form that has an underlying data set. When the users click a particular button, the code clears some fields on the form but also is suppose to update a value in the underlying dataset on a field that is NOT displayed on the form.
In VB6 and VBA this is very easy to do. I simply says Forms!formname!NameOfUnderlyingFieldNotshown and pass it the value. How do I do this in VB.net with a Windows Form and underlying dataset?
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Sep 19, 2009
Re DataGridView Sorry don't really have any code - just a whole project. Basically I changed the underlying Access (accdb) Table by adding a new field, The new field shows up in the DataSources section of the Solution Explorer and in the "Edit DataSet with wizard" page but when I attach the binding source to a datagrid view, the new field is not there. I also created a new bindingsource but still not there.I just noticed I've another table where I changed the names to something more meaningful, and the old names are still there and the data for those fields doesn't display in the DataGridView
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