Pass Integer Array To C++ Active Control?
Mar 12, 2009
I'm using VB.NET within Visual Studio 2008.I have a ActiveX control on my form that contains a method that takes an Array. In VB6 I just passed in the array and it was populated OK. When I do the same in VB.NET, I get a result but the value of each index appears to be a pointer.Here is the C++ method code...
void CMyCtrl::GetRowInfo(const VARIANT FAR& vArray, short sNumRows)
{
// Declaretemp array to put the row list into
short asRowList[24];
[code]....
Here is the VB code (same VB6 and VB.NET...
Dim maintRowList(0 To 23) As Integer
AxMyCtrl.GetRowInfo(maintRowList, 24)
In VB6, the value of maintRowList(0) is in the range 0 to Windows screen height(its a pixel value)In VB.NET the value of maintRowList(0) is a value that looks like a pointer to me (e.g 285671429).In VB.NET, the type of the 1st parameter is Object. In VB6 it is a Variant. I've tried AxMyCtrl.GetRowInfo(maintRowList(0), 24) and got the same result. I think I need to get a pointer to either the array or the first element of the array but I can't see a way to do that. how I can pass an array to this type of C++ ActiveX method?BTW - I cannot change the ActiveX code so the solution must be within VB.NET.
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Jun 24, 2010
with the code below, I'm trying to send an integer array from a background thread to the Main Form which contains a User Draw Control. I currently get the error:"Invoke or BeginInvoke cannot be called on a control until the window handle has been created."
Public Class Form1 Me.TabPage.Controls.Add(Me.DrawGraph) 'designer.vb
Public InjectIntegerArrayDelegate As InjectIntegerArray
Delegate Sub InjectIntegerArray(intarray As Integer())
InjectIntegerArrayDelegate = New InjectIntegerArray(AddressOf InjectIntegerArrayMethod)
public Sub InjectIntegerArrayMethod(SensorData As Integer())
DrawGraph.Int_Clutter_In = SensorData
[Code]...
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Sep 25, 2010
ive got some simple problem i cant understand how to solve.
str(1) is an array and integer(or double, tried both)
a(1) is an array and integer (or double, tried both)
a(1) = a(1) + 1
Label1.Text = str(1) + a
the big part is where i get: operator '+' is not defined for types 'integer' and '1-dimensional array of integer'.why do i get that message and what does it mean? how do i make the code do what i want?
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Apr 25, 2011
I'm trying to create a linked list of an array of integers. Why is the following implicit conversion required?
When I run the code that contains that conversion, I get the following error.
As a real-time data acquisition user control data (a packet of an array of bytes) arrives every second, is converted into an integer array and inserted into a linked list.
The most recently arrived data is painted as coordinates on a grid at the right of a PictureBox using Graphics.DrawLine (pen,X1,Y1,X2,Y2).
The oldest data (arriving 120 seconds ago) will be drawn at the leftmost portion of the Picturebox.
Why a linked list rather than a list? To display 120 views of time sequence data, the draw routine the most recently inserted node to a node that points to Nothing. How do I limit the length of the linked list to 120 nodes and always ensure that the last node points to Nothing?
Do While Not item Is Nothing
item = item.NextItem
Loop
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May 9, 2012
this is for a BINGO game final project that I already turned in but this just bugged me that I could not get the sorting figured out. I am trying to get this to sort the random numbers in to columns under the correct letters but I keep getting the error Operator '>=' is not defined for types '1-dimensional array of Integer' and 'Integer' under the line:
[Code]...
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Mar 30, 2009
I want to get the active control (control which has the focus or where the cursor is on) each time the cursor moves to another control or each time a control receives a focus.
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Mar 15, 2012
I want to create a pass or fail integer into my multiple choice radiobutton quiz.
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Jul 16, 2010
I'm new to VB.Net. I'm using a library call setInstance(ByVal instance As UInteger) in my VB.Net code. The parameter I need to pass is an Integer. Is there anything I need to do to convert the integer parameter to an unsigned integer? The number is garunteed to be positive and less than 10.
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Dec 18, 2009
I don't think I fully understand passing values from a sub to a module. Here is what I'm trying to do (problem is at the '****):
[Code]...
I think I've seen something like this before - where the actual function returns a value. Is this possible? Or would I have to pass an integer variable from the sub to the function, and then return it back to the sub?
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Jun 22, 2010
A c# class's single dimension byte array contains socket level instrument sensor data as per:
public static byte[] frameData
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Apr 29, 2011
I am trying to pass a value of a radio button to my database. when the radio button is not checked the value 2 pass in no problem. When the radiobutton is checked the value does not pass to the database. I get the error: "Input string was no in a correct format".[code]....
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May 27, 2010
I'm having problems with marshaling in VB.NET to C++, here's the code :
In the C++ DLL :
struct APP_PARAM
{
[code].....
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Mar 4, 2012
I am creating a dll with all the functions and subroutines that I use all the time and I decided to create a function that I can pass different types of array to so the function obviously (or not) would have an array of type object. Now I no you can pass any type into an object type but when I pass an integer array into an object array I get an error.
value of type '1-dimensional array of integer' cannot be converted to '1-dimensional array of object' because 'integer' is not a reference type.
Shared Function CompareArray(ByVal FirstArray() As Object, ByVal SecondArray() As Object, Optional ByRef ErrorMessage As String = "") As Boolean
Dim IntArrayOne() As Integer = {1,2,3,4,5} Dim IntArrayTwo() As Integer = {1,2,3,5,6} Dim IsSame As Boolean = False IsSame = CompareArray(IntArrayOne(), IntArrayTwo())
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Mar 12, 2010
In VB.NET, it is entirely possible to pass an integer as a string parameter to a method without calling .ToString() - it's even possible to call .ToString without the ()'s. The code will run without a problem, VB will interpret the integer as a string without having been told to. In C#, these would cause compilation errors - you are required to call .ToString() and to call it correctly in that situation before it will compile. Is there a way to make the VB compilation process check for the same things as the C# compilation process? Would it be best practice in a mixed team to force this check?
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Feb 24, 2009
I am writing an OPC Client in VB.NET (2008) and I am using an OPC wrapper from Graybox. I am having some problems with the data types. I have an Array of String that contains all of the OPC Items that I wish to read from the OPC Server. When I attempt to use the Array of String, Option Strict causes the following compile error message:Error 5 Option Strict On disallows narrowing from type 'System.Array' to type '1-dimensional array of String' in copying the value of 'ByRef' parameter 'ItemIDs' back to the matching argument. How do I pass the Item ID's (all strings) in an array?
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Nov 22, 2011
I have this issue with casting....is there anyway i could pass an integer into a label...this is what i have done so far but i am getting this error "A first chance exception of type 'System.InvalidCastException' occurred in Microsoft.VisualBasic.dll"
Dim firstNumber As Integer
Dim secondNumber As Integer
Dim solution As Integer
[CODE].........................
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Jul 3, 2011
I would like to get the control name, regardless of if its on the projects form or not. put it in a thumbnail following the mouse...
So if i open up notepad it would give me the active control name...
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Dec 24, 2009
I have 9 textboxes in 1 form and couple of buttons to add unicode symbols inside the last active textbox when the button is pressed. So how do I find out which textbox was last active when the button was pressed.
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Dec 19, 2009
how to get the name of the active control in Visual basic
system.reflection..... that doesnt work
like i use addhandler so if I do that it gets me the name of the adress of the original control
Also, I'm trying to get a toolstripdropdown menu as a bookmarks thing; how can I get the name of the selected dropdown item?
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Apr 20, 2012
I currently Have an array ...
Dim mTeam(10) As String
In the Form load For visual basic i have
'Load Teams
mTeam(1) = "Oklahoma"
mTeam(2) = "USC"
mTeam(3) = "LSU"
[code]....
ButtonName (button to do all the work and show messagebox) i already have a try catch to have it only take integer values between 1 and 10.
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Mar 14, 2010
The following code lets me insert an image into an Active X Image box using 'GetOpenFilename', however, if I push the Cancel button I get an error saying that the file cannot be found. Can anyone provide me with some advice on how to handle this error, the code is below?
Private Sub Image1_Click()
Dim ImageOneLocation As String
ImageOneLocation = Application.GetOpenFilename
[code]....
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Mar 30, 2009
I want to get the active control (control which has the focus or where the cursor is on) each time the cursor moves to another control or each time a control receives a focus.
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Jul 26, 2011
In small project I am making , when I load the main for the list box is generated by data from xml ,well that done well , but I cant get the control active and I can getit to select item
Me activecontrol = listbox 1
ListBox1.SelectedItem = 0
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May 14, 2012
I've a dynamic integer array to which I wish to add new values. I've looked elsewhere but couldn't find anything definitive.
Dim TeamIndex(), i As Integer
For i = 0 to 100
'TeamIndex(i).Add = <some value>
Next
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Dec 1, 2010
i'm trying to have a message box show information from a map. granted i am quite new to VB, but i have a good amount of experience in php and some in java.
[code]...
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Mar 31, 2010
I want a number like 1000 (hex 3E8) to be 232, 3.
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Jul 7, 2011
I'm having trouble with this specific code and on arrays in general. This is what I am asked to do: "In this exercise, code an application that displays the number of students earning a specific score. Declare a 20-element, one-dimensional integer array named intScores with the following 20 numbers assigned to the array: (88, 72, 99, 20, 66, 95, 99, 100, 72, 88, 78, 45, 57, 89, 85, 78, 75, 88, 72, and 88). Code the procedure so that the user can enter a score from 0 to 100. Then the procedure should display using a message box the number of students who've earned that score."
First off, I do not know what I'm doing wrong with my array.. it says there's an error in line 31 saying "variable intSubscript hides a variable in an enclosing block" but I don't know what that means. And lastly, once that is sorted out, I don't know how to code a message box to appear saying how many students have received that score.
[Code]...
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Jan 11, 2011
I am having trouble writing a loop that will check to see if a random number exists in an array.Let me Elaborate I have a function that returns a random (integer) number between a range called GetRandom()I want to execute GetRandom() and then check to see if MyArray() contains the new number, if it does not contain the number then I want to add it to the array, if it does contain the array then i need to run GetRandom() again until it doesn't contain the number.how to determine whether to throw the number out or add it to the array.
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Sep 3, 2011
I want to define an unlimited array of integer and add values to it but I have some problems.
I'm using this code (for example):
Dim I() As Integer
I(1) = 1
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Mar 9, 2011
How can i split a value and insert it into a array in VB?
An example:
The initial value is 987654321.
Using a for loop i need to insert the value as something like this:
Position(1) = 9 'The first number from the splited integer
Position(2) = 8 'The second number from the splited integer
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