Colouring In A Picture Using Overlays Or Filled Polygons?
Jun 3, 2012
I am trying to create a VB.net form application to visually fill in a floor plan with different colours according to reservation status.The basic floor plan is white and the idea is to colour in the various apartments in different colours depending on some variables.I have tried overlaying .png pictures on top of each other but this doesn't work due to the non-true nature of transparency in visual studio as soon as you overlay more than 2 PNGs.Not much more success with drawing polygons either.
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Sep 29, 2011
Im craeating a dart scoring program (to use myself in my dart room) and want the user to be able to click in different areas of a picture of a dart board to register the thrown darts.
This program will be resizable, so the picture of the dart board can change it's size when the user change the program window size.
Im using a list of polygons(pointF-arrays) to map up each area and run some calculation to see if the mouse click is inside the polygons area, but how do I scale those polygons correctly when the picturebox is resized? My polygons are hard coded to map the dartboards area of the picture at a specific size.[code]...
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Oct 15, 2011
i want to Identify filled rectangles in picture given picture in vb .net.
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Dec 28, 2009
I found that the overlay function was working fine. However, it seems that if I use the overlay function while reading an image from a stream, that it would enlarge the picture before overlaying it.
ie:
overlay = New Bitmap(stream)
g.DrawImage(overlay, 0, 0)
Seems to enlarge the image before overlaying it, whereas this:
overlay = New Bitmap(My.Resources.Pic)
g.DrawImage(overlay, 0, 0)
Seems to overlay the image fine.
What could be the reason for this?
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Jun 22, 2010
I added an image as the background image for a form in VB.net. When I run the program, after approx. 5-6 seconds, the image partially overlays itself, as in an offset overlay of the underlying image. I never had this problem in VB6, but I did have it the other time I used a background image on a form in VB.Net.
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Feb 24, 2010
I have a mask bitmap (bmpMask) that I am drawing onto a destination bitmap (bmpDest). Both bitmaps have alpha channels but are already full of opaque content. What I want to do is produce transparent areas using GDI+ 'Draw...' methods on bmpMask so that bmpDest shows through when I draw bmpMask over it.Of course gMask.DrawLine(Pens.Transparent, 0, y, wMax, y) causes no change to bmpMask, because GDI+ works as designed and doesn't draw anything when transparent. Even with semitransparent colors, only the r,g,b values of bmpMask's pixels are updated.
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Feb 1, 2012
This issue is driving me nuts. Yesterday it was working perfectly but unfortunately I deleted the form by mistake and I had to build it again. The form contains a datagridview and I have the following code on the Load event:
HTML
Private Sub GUIAS_ConsAd_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
Me.ADIANTAMENTOSTableAdapter.Fill(Me.GUIASDataSet1.ADIANTAMENTOS)
[Code].....
The same code on the Sorted event of the datagrid produces the same effect
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Apr 16, 2011
I'm trying to set a subitem in a listview to bold and a different fore colour. But it doesn't appear to be working, it's not throwing any errors either
lvServers.Items(i).SubItems(4).Font = New Font(lvServers.Items(i).SubItems(4).Font, FontStyle.Bold)
lvServers.Items(i).SubItems(4).ForeColor = Color.Yellow
If it makes any difference, the listview mode is set to "Details". I've also tried refreshing the listview and it makes no difference.In case it matters here is the partial block of code that snippet comes from:
For i = 0 To UBound(strWorldChunk) - 1
If IsNumeric(lvServers.Items(i).SubItems(4).Text) = True Then
If lvServers.Items(i).SubItems(4).Text = intFreeEmpty Then
[code]....
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Sep 7, 2009
i have 2 polygons: 1 - A rectangle with a certain size defined with 4, 6 points or more (what ever becomes easier). 2 - A non-rectangular polygon (a quadrangular) what i need is that when given a certain point with inside the rectangle, i can translate that same point in the other polygon in the right position.
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May 9, 2012
I'm trying to do something that is turning out to be out of my league at the moment. I need to draw geometric figures. These geometric figures have all the coordinates of their corners. Say I have a trapezoid, and I would want to draw it. The drawing would be done in a picturebox or a panel or a groupbox (some part of the form where only the geometric figure will be).
I saw the method on how to do that Here and that's exactly what I'm trying to achieve, but there it's drawn on a newly created form, and I need it in a picbox, panel or groupbox as I mentioned above. I also need the drawn figure to be at the center of the picbox/panel/groupbox.
The coordinates of the lines should be like (xa.text,ya.text) to (xa.text - xb.text, ya.text + yb.text) if I'm not wrong for the first line of the geometric figure and so on.
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May 7, 2008
I have a VB6 program in which all graphics are drawn with lines that are plotted to specific points in the controls (forms, picture box, etc.).
[Code]...
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Sep 29, 2011
I am trying to create a report that will give me the area of multiple polygons on a layer. There will be an unknown number of layers and polygons. I was thinking I could use a multidimensional array with each row holding the layer name and the area of that polygon then loop through and separate the layers and sum the areas. My problem is that in all the reading I�ve done on the subject I�m not sure of how to initialize the array.
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May 1, 2010
I have a problem. Im trying to create a form that enables a user to add dots on a mouse click event over an office floor plan. I have searched the web and this site but still am struggerling. My aim is to be able to draw dots (purpose is to highlight problems) and polygons over the plan (purpose to define which service area the floor area relates). I want to save all graphics to an access database with associated
fields.
My thinking is to place a second picture box over the first and make this transparent and use this as the user interface? I dont expect anyone to solve this for me, however, any help with how to draw dots and polygons through mouse down or mouse click would be most helpful.
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Sep 2, 2011
what I am trying to do is create an effect in a richtextbox so when the user types any text surrounded by Brackets { } is coloured a different colour to the rest of the text say blue for example. How would I go about doing this?
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Jun 5, 2010
How can i make it so if my RichTextBox1 has the word "void" in it; it will be coloured blue but only "void" it self so the world "else" next to it can be red but in the same RichTextBox1
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Mar 15, 2012
1- how I can put picture in tool strip and put it convert to split button without the picture go invisible when i click on it
2- how can I make tabs in the forms
3- I want to put pictures in the form in the same place For Example when the user check the radio button or when the user choose the name in the combo box a specific picture should be display?
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Dec 30, 2010
I've been looking all over for code to check that all the textboxes on the form have been filled in.... I've found this code in slight variations which people said worked fine
Dim ctl As Control
For Each ctl In Me.Controls
If TypeOf ctl is TextBox Then
If ctl.Text = "" Then
[code]....
I've attached this code to the click of a button and even with all fields empty nothing will happen!
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Feb 9, 2010
I have 4 textboxes - txtResFDB, txtResPBV, txtResRSLP and txtResTCD..
i need to check that any of the two textboxes should be filled up out of 4.
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Apr 9, 2010
We are filling a combobox with information of a table. (we read a field for filling the combobox and the id)
It's necessary that if we choose an item in the combobox we also get the id of the table.How do we put the id into the combobox so can read this id after selecting an item.
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Apr 30, 2012
If Page.IsPostBack = False Then[code]...
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Dec 15, 2011
I cannot seem to figure out how to search through a created/filled dataset for a certain value which exists in column(1), returning Column(0)'s value into a textbox.My code looks like this:
[Code]...
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Jan 8, 2009
The program consists of making 2 text boxes, one labeled Age, and one labeled Name.The Name text box must return the name in all uppercase.If the Age text box isn't filled with a numerical value, you should receive a message saying "need a number" and return your cursor to the age box.2 command buttons "Process" and "Exit"
I tried getting started, but I usually always work better when i have a beginning!
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Sep 7, 2009
I have 2 textboxes where the values are filled with this code(the data is collected from 2 different
[Code]...
When I now tries to update the data in the box743 i get an error. Who says that I can not convert the strng to double.I use the tableadapter to update the database and both box498 and box518 updates without problems.But when I try to upgrade the 743 box I get the error.
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Oct 15, 2011
how to display picture using the Application.startup path? i want to locate the picture in my bin folder inside my debug folder as i selected the name of the candidate in the combo box.
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Dec 27, 2011
Imports Word = Microsoft.Office.Interop.Word
Public Class Form1
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
Dim a As String = My.Resources.picture
[code]....
I wont this in table.cell (3), from listbox2
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May 22, 2009
I want to add a .ico to a notifyicon, but i get this message:Argument 'picture' must be a picture that can be used as a Icon?What is the problem? It is a .ico file..
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Jan 13, 2012
This is the situation when there is a shift change and one record is started by one person and finished by another. What one has written another can't change but must finished a record. So u must lock only the combo boxes and text boxes that are filled. This code lockes all the combo boxes and text boxes and 2 check boxes (NEZAVRSENE_INTERVENCIJE and IZMENA_RASKRSNICE) by clicking on a NEZAVRSENE_INTERVENCIJE check box. Lets say I have combo boxes 1 2 and 3 and text boxes 1 2 and 3 and I have to lock only the ones that are filled. How do I code that another check box lockes just the filled controls?
[Code]...
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Jan 2, 2012
I have a form and it is databound to a Access table with the standard TABLEADAPTER wizard. All works well HOWEVER, new records are not displayed in sorted order.When I add a new RECORD, it can go anywhere within the table. When I move around the table using the TABLEADAPTER Manager, the newly added record does not appear in sorted order.Furthermore, when I restart the application and show the form (which issued a FILL command), the records are not sorted.The SELECT I am using is fairly simple:
SELECT [list of fields] FROM TableXYZ ORDER By [sort field]
This HOWEVER, does not appear to work.get the table to be sorted when filled?Other information - the table in question has the field that is specified in the ORDER BY clause which is the same as the Primary Key.As an example, in the table there are records with the following KEY:
4313, 4314, 4315
When I insert a new record, it might fall between 4313 and 4314. Lets assume I add 9999. I expect it to be at the end of the list however, it appears between 4313 and 4314.FYI Also tried this in the code as well:
TableBindingSouce.Sort = "field1 ASC"
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Dec 27, 2010
I have 3 textboxes. I want Button3 to remain disabled until ALL three are filled out. This seems to work, but for only ONE textbox:
If Textbox1.Text.Trim <> String.Empty then
Button1.Enabled = True
Else
Button1.Enabled = False
End If
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Oct 18, 2009
I have a checkboxlist that is filled with items from an array. I want the user to be able to select the items they want to remove then press a button and have the items be removed from the array. I have never worked with a checkboxlist before so I'm not really sure how to go about this. Here is what I have tried so far:
[Code]...
When I re-display the array into the checkboxlist it shows that nothing was removed from the array.
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