Always when i want to create a Executeable and i use the CodeDom Compiler i always get the Error:
The Type IntPtr is not defined
My Compiler Options:
options.ReferencedAssemblies.Add("System.dll")
[code].....
Imports System.CodeDom.Compiler
Public Class iCompiler
Public Shared Sub GenerateExecutable(ByVal Output As String, ByVal Source As String, ByVal Icon As String)[code].....
Apparently, this is not allowed? Is there a way to cast to an UInt16?
zero2 = CUInt16((Ch1OutputResults.range10Zero - 0) * 65535)
I need to explicitly convert my byte array into IntPtr to pass it to the third-party api. I've been looking through Runtime.InteropServices namespace but didn't find anything suitable.
View 2 Replieswhich compiler errors would be detected out by VB compiler?
I have searched out some compiler errors list for C#, for example, see the website at [URL]
MS provided us the information about C# compiler error. Does MS provide VB compiler errors information as well.VS
I am trying to create a procedure which will evaluate a string expression as if it were a line of code...Kind of like what a graphing calculator does when you enter a formula. Does anyone have any experience with this in VB? I have an example of C++ code which uses CodeDom, but I am a bit rusty with my C++!
View 4 RepliesI have a program using vs 2008 (as 3.5) and code in vb. The site has been running nicely for 3 years, but suddenly the error message has come: BC 30451 Name 'class 2' is not defined. Call Class2.open_connection(cn, Session("datapath")) But in my local computer and in the site server the particular line mentions class1 only and not class 2!
View 5 RepliesTo be more precise, Would it be nice if we could compile vb to native code instead of having the intermeditary layer of the CLR. A bit like PowerBasic.
View 17 RepliesThis error first appear to occur randomly. Steps to recreate:Open Visual Studio and load a solution (some files automatically opened) - this is when the problem occurs Close all open files Restart visual studio and load solution (no issues)Open Exactly the same files again, restart visual studio and load solution so files open automatically (problem occurs!)
However, when trying to narrow it down to a single file (that is automatically opened when the solution is loaded), I couldn't reproduce the problem. Now with all the files open again the problem doesn't occur!!! So it looks like it is fixed - though this happened before and eventually the issue came back.
I think it is to do with one of the user controls with DevExpress controls on it - when the error occurs, the designer displays the error. Though I can't reproduce it at the moment to confirm that.
I'm migrating data from an old laptop to a new laptop, including some vb.net projects in visual studio 2008. But when I try to open some of them on the new laptop, I quickly get a dialog stating that the vb compiler has crashed and asking me if I want to close, debug, or check online for solutions. Visual studio then, frustratingly, closes.The projects don't crash when opened on the old laptop, and other migrated projects open without crashing. So it must be some property of the projects that becomes corrupted by moving them.
Error Details:
Problem signature:
Problem Event Name: APPCRASH
Application Name: devenv.exe
Application Version: 9.0.21022.8
[code].....
The old laptop is windows xp and uses visual studio professional. The new laptop is windows vista and uses visual studio team. The 'migration' was a straight copy paste of the source files.
Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
SaveFileDialog1.Title = "Save"
SaveFileDialog1.Filter = "Batch File (*.bat)|*.bat"
If SaveFileDialog1.ShowDialog = System.Windows.Forms.DialogResult.OK Then
[code]....
I'm trying to move a project from my old laptop to my new laptop. But I'm running into a problem: whenever I open the project on my new laptop, it crashes!I can open other projects on my new laptop, including some copied from my old laptop. I can also open the project in question on my old laptop. So the problem must be some combination of things in the project, and the fact that it was moved
View 4 RepliesIf I look at the IL that is created in Linqpad for the two following code snippets, I wonder what happens here.
In c#
int i = 42;
results in the following IL code
IL_0000: ret
whereas in VB
Dim i As Integer = 42
it is
IL_0000: ldc.i4.s 2A
IL_0002: stloc.0
Apparently, the c# compiler understands the the value is never used and thus simply returns nothing. In VB.NET the actual code is translated.Is that due to differences in compiler optimization or is there anything else at work?
Update: Just to clarify this - I just enter this one line into LinqPad and look at the IL it creates (most definitely by running the respective compiler). There is no program.
When I try to compile my project, I get this error
Error 1 Unable to copy file "objDebugoneForce.pdb" to "binDebugoneForce.pdb". Access to the path 'objDebugoneForce.pdb' is denied. oneForce.
How to rectify it? [URL]
What is the equivalent of IntPtr of Vb.Net in Vb6? For example what'll be the equivalent of the following 2 lines in Vb6?
View 1 RepliesI see everywhere people use IntPtr, is there any reason I should use UIntPtr, instead?
View 2 RepliesHow can I convert IntPtr to Int64?
vb
Convert.ToInt64(GetForegroundWindow())
error :Unable to cast object of type 'System.IntPtr' to type 'System.IConvertible'.
I have a function that I need to pass data to but the only type of data the function is allowed to accept as a parameter is IntPtr (yep you guessed it, Windows APIs). Would I be able to actually pass anything useful to it? In the case I'm looking at right now it would be a List(Of T) that I need to pass to the function? At the moment I'm resorting to just using a class level object that both the calling method and the function that accepts IntPtr can access, but I would like to negate the need for this if possible.
View 6 Repliesi am using SendMessage to send a message with a LPTSTR in WPARAM from a dll to my vb.net form and i get it by overriding WndProc but the problem is when using Marshal.PtrToStringAuto on the WPARAM it doesn't work, the strange thing is that if i monitor WM_SETTEXT of the form and use PtrToStringAuto to get the string from LPARAM it works, i guess mine doesn't work that's because the dll is loaded by other application.
C++ DLL Proc
Code:
LRESULT CALLBACK CallWndProc(int nCode,WPARAM wParam,LPARAM lParam)
{
[Code]...
This sounds like a silly question, and it may not even be possible, but say I have a MemoryStream in my code. Is it possible to get the IntPtr of said MemoryStream?
View 3 RepliesThe idea with System.IntPtr is to represent an integer whose width in bits correspond to the size of a pointer in the hardware and operating system that the CLR is running in, it's platform specific in other words. It supports 32-bit and 64-bit architectures only.This is a legacy from old-style C API's where pointers and ints were frequently treated as interchangeable. The Win32 API has many such parameters, where the width varies with the underlying architecture thus the mess with porting of code from 32-bit to 64-bit (we already did this once when going from 16-bit to 32-bit, funny how we never learn...).In practice, as is mentioned in other responses, it can be used to hold unmanaged resource handles and pointers etc that stem from the underlying Win32 functions. It can also be used to hold integers of the natural size for current platform. You can also use IntPtr.Size to dtermine the size of a pointer on the current platform.SO when you explain this to a child ;) this would be used to let program's flow at the same speed at diffrent kinds of operating systems?
View 1 RepliesI am trying to setup a call back (delegate) in my code for the DirectSound.Notify so I will be called when the sound buffer reaches a certain postion druing play back. My Code is the following:
'Set up call back
Public Delegate Sub NotifyHandler()
'.....
Dim NotificationHandler As NotifyHandler
[code]....
I need to get the address of an integer and assign it to an IntPtr to use in an API.[code]...
View 3 Replieshow to retrive the raw data of the image pointed by an intptr.The thing is the detector gives the pointer to the acquired image and I need to retrieve the image rawdata from the given intptr.
View 1 Replieshow I can convert an Integer of an object handle to an IntPtr?
View 2 RepliesI'm trying to get the window of a game (jedi academy) I keep getting this error Cannot convert type 'integer' to system.intrptr This is were its underlined in blue DirectCast(Me.hWndGame, IntPtr),
Imports Microsoft.VisualBasic.CompilerServices
Imports System
Imports System.Runtime.InteropServices
[code]....
i need to save an array of intptrs as a part of a structure in a file, vb.net gives me "File I/O of a structure with field 'pList' of type 'IntPtr' is not valid." error, ok i figured and tried to convert them to integers and while it worked for other singular intptrs it did not for the array as it just throws me a conversion error. I then tried rebuilding the array in the new sub of the save structure and while that sorta worked(i think) it then gives a "bad size" error when saving. Im out of ideas, saving the array elements one by one would be suicide as the amount varies and is well in hundreds,
View 1 RepliesAre there any alternatives to Codedom? THe reason I am asking is because Codedom is not letting me use pointers(unsafe code) which is a must in my project. I have hear of the System.emit namespace though.
View 2 RepliesOkay Is there a way In vb.net to create an exe from a predefined script, for example rather than writting the methods and subs into the codedom code could I just have a textbox that I could put a script into and then have that built? (obviously omitting button presses and things.)
Im not worrying about ui's at the moment just and exe (hello world style )
Are there any tutorials for this?
Code: None
Does microsoft have documentation on how to use VBCodeProvider and codedom or any .net book that provide detail on how to use it. i tried to use it to compile program on the fly but never work. It always gives me an errors such as path to the string or file not found.
View 11 Replies