Not Getting A Handle Across Interop Boundary
Jul 15, 2011
I cannot get a handle for managed code to work for unmanaged code. I am successfully getting a a process handle on the managed side and sending it to unmanaged multithread code which is comming back with a zero which is supposed to be the old mask if the call was successful which means it wasn't. Im beginning to wonder if the structures are different. I also think that they are different list lists so of course it will fail.[code]...
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Feb 1, 2011
I developed a User Control Like as combo Box. But i Can't Show its list in Out side of the Form Boundary..how can make the user control out side of the FORM Boundary like as ComboBox, Date Control etc.... Pls Code in VB6
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Mar 5, 2010
I have a form displayed in my app and what I want to do is detect when the user clicks outside of the form and close it, however I am not sure how to do this?
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Jun 25, 2009
I have created usercontrol with monthviewcontrol but i am unable to display the monthview control out of my form boundary
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Aug 15, 2011
I have a class in a shared library, that I have added references to on both the webservice and the client project. One of the functions in the webservice returns a list of this class.
when I try to cast the return value into a List of the class on the client side, I keep getting an error telling me that a 1-dimensional array of type '<webservice.class>' cannot be converted to type '<sharedlib.clas>'.
The reason that I put the class into the shared library, was because I wanted the webservice to return strongly typed data, but I also have a couple of methods in the class. I dont care about them on the server side, but they are needed on the client side. I figured that this would be the "better" method, since in a shared library it is only declared once for both projects.
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Feb 27, 2011
I have a component that I have built that includes a webbrowser control. I don't know if that is important, so I mention it anyway.
When I put the control into my form everything is fine,however, when I debug the application I get the following cryptic message:
COMException crossed a native/managed boundary
Error HRESULT_FAIL has been returned from a call to a COM component.
Private m_MouseOverListBox As Boolean = False
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Jan 2, 2010
What is happening now: i click the area in the taskbar which "belongs" to my form, while it is being shown, the form remains "shown"
what i hope to get done: if the form is "shown" and i click the taskbar of my form, i want it hidden
could we detect click event of the form's area in the taskbar?
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Jul 2, 2011
My image is inside the panel, I set up a if-statement for the boundary which it can only be moved. When I tried to run it, it looks crappy when the mouse has panned it outside the boundary. Here is my code for panning:
If (mouse.Button = Windows.Forms.MouseButtons.Left) Then
Dim mousePosNow As Point = mouse.Location
Dim deltaX As Integer = mousePosNow.X - mouseDowns.X
[Code].....
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Sep 3, 2008
I have a ScreenCapture class that allows me to capture the content of the screen by specifying a X Y value of the top left and X Y value of the bottom right corner of a rectangle. This all works fine, however the problem that I have is that I want to capture the content of a panel on a form, the panel obviously has a location X and Y which gives me the top left position and I can use the width and height propoerty of the panel to determine the bottom right position. The problem that I have is this obviously gives me location of the panel on the form and not the screen. The other problem that I have is that this form is a MidiChild for another form.
So basically what I want to know is how can I get the location of the panel but as a screen position?
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Aug 29, 2011
i want to write a small app which enables the user to burn some files on cd/dvd. Something like:
- Make an export from related DB Tables with informations
- Collect customers informations
- zip everything
-burn on cd (its a settlement related tool)
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Jun 30, 2009
I have one form lays on the top of a form or a panel. I would like be able to drag the top form within the boundary of the bottom form or panel. How can I do that?
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Mar 23, 2009
I wrote an application to handle a joystick with directinput. It works fine if it uses the handle of the main window but it doesnt happen the same if the handle is the one of the component that contains the joystick's operation.
I mean:
main form handle: 15
component handle (which is inside the window and the joystick needs the focus of this component to work): 25
It always work if the handle i initilizate the device is the main form (15).How can i use only the handle of the component?
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Apr 7, 2011
This might be a bit of stupid question but I need some clarification. I'm somewhat new to .NET and have created a EXE that had to reference an existing COM DLL. In doing so, Visual Studio 2010 automatically created an "Interop" DLL that it needs/uses to work with the legacy COM DLL.
I have deployed my project and included this Interop DLL with it (in the same folder) and everything is working fine. However, I have other applications that will need to use this same legacy COM DLL. Is it okay to reference it they same way in each application and keep deploying the "Interop" DLL with each application? Unfortuantely, all of these small applications go in the same folder and each use the same Interop DLL (so it will already exist there if it's used by another app.) I'm forced to having them in the same folder because these applications are being called as a way of customizing a parent application. As such it only looks in it's local folder when it wants to run a "custom" app. I'm just concerned if one the EXE's is ever removed and they take out the Interop DLL, then the others that still depend on it will fail.
So, I was wondering if it is possible or a good idea to put that Interop DLL in the GAC? I went ahead and installed the Interop DLL into the GAC and then removed the Interop DLL from the folder where my EXE runs and it failed to work. I get an error that says "Could not load file or assembly". I'm stuck on getting this working.
Do I need to reference the Interop DLL in my project differently such that it's now from the GAC? or Do I need to add something to my .NET code like Assembly.Load to make it work? Do I need to create that Interop DLL myself using TLBIMP?
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Apr 11, 2009
What is COM Interop? Please remember to mark the replies as answers if they help and unmark them if they provide no help.Welcome to the All-In-One Code Framework!
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Jun 29, 2012
I am using Interop to read and write to excel but I'm having some problems writing to excel... When I enter the information I need to be written on the excel in an inputbox, this pops up "COM object that has been separated from its underlying RCW cannot be used."Heres the Code:
Code:
Private Sub editmodelbtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles editmodelbtn.Click
[code].....
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Jul 13, 2011
I am trying to use a 3rd-party Interop assembly called SmartWIM.
I have added it as a reference and added an Import statement
Imports SmartWIMLib
I then initilalise it with
Dim objSmartWim As New SmartWIM
All pretty standard stuff, I've done this countless times with Interops. However, whenever I try and use any methods I get the following error [code]...
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Sep 15, 2011
I'm kinda new to using VB.NET and certainly with the Excel Interop.I have the impression that I'm doing something wrong in these simple procedures. I keep getting errors on them:
[Code]...
The first procedure fills a combobox with all the worksheet names of the workbook.The second procedure copies all cells in the selected worksheet to an array.The error is the following: System.NullReferenceException: Object reference not set to an instance of an object.I think the error is in the cleanup part, when I set the objects to nothing and close everything. Can someone confirm if this is good or wrong code and maybe point me in the right direction?
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Aug 26, 2011
I Programe a COM Library in VS2008 to use in Excel , but I'm stuck with an error that I don't understand.
I use this two classes , that compile and register OK. One Class QBitems return a nongeneric collection of QBItem but when I tried to use the Add and/or Remove Method, I receive the following error in Excel VBA :
Run-time Error '438': Object doesn't support this property or method.
I added a class (SImpleClass) in the library and I called from VBA it returned the QItems collection without problem.
NEW: When I replace the QBItem object with a string in the Collection QBItems everytthing works OK. It looks like interface doesn't like to pass an object like QBitem class
Excel/VBA:
Sub Pru()
Dim obj As New CollectionCOMClass.SimpleClass
Dim Itms As New CollectionCOMClass.QBItems
[Code]....
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Apr 15, 2009
I have a .NET application that interops with a VB6 COM DLL. After installing the application on a Vista machine, I try to execute the code that consumes that COM component and I get an error attempting to read or write protected memory. The system's DEP is set to only essential programs and services, but apparently that automatically applies to .NET applications. When I tried to exclude the application from DEP, it said that DEP must be on for this program (could not be turned off). I had to use the bcedit.exe program to manually turn DEP off system wide and then reboot. After that, the application ran without a hitch, but this is not the route we want to go for our users. Are there any solutions/recommendations for this? It seems as though DEP has been more of a headache than not.
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Mar 6, 2010
How can i add Interop.ADODB.dll to my references as i cant seem to find it when i try?
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Jun 22, 2010
I am creating a report in my asp.net application. The report outputs to excel using the excel interop. Some calculations in the report cause excel to display "Inf" or "NaN" I want to force these calculations to zero so that the report displays zero and NOT "Inf" or "NaN"
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Apr 5, 2012
The Current Setup:So, I can use the following code to save a file as an XLS:
_myWorkbook.SaveAs("FileName.xls", Excel.XlFileFormat.xlWorkbookNormal)
I can also use the following code to save a file as an XLSX (Since I use Office 2010):
_myWorkbook.SaveAs("FileName.xlsx", Excel.XlFileFormat.xlWorkbookDefault)
I have tried (unsuccessfully) to save the file as an XLSX using the following code:
_myWorkbook.SaveAs("FileName.xlsx", Excel.XlFileFormat.xlExcel12)Why does this not work? Last I checked, Excel 12 was Excel 2007 (a version that supports XLSX). Am I missing something?
I get a This extension can not be used with the selected file type error)
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Feb 6, 2006
I've developed a vb.net app which works great on my dev machine, both within the IDE and as a compiled executable. But when I deploy it to a user workstation, I receive the following:
Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you click Quit, the application will close immediately.
Could not load file or assembly Microsoft Office Interop.Excel, Version=11.0.0.0,Culture=neutral, PublicKeyToken=71e9bce111e9429c' or one of its dependencies. The system cannon find the file specified.
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Jan 8, 2012
Im doing a VB .net2 program and when building i get file interop.shell32.dll in my bin folder.
Can i embed that in my final .exe file so I only have to destribute 1 file ?
There is a properties on my form where I can choose a "Build Action: Embedded Resources" , is that the option to accomplish me goal?
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Jun 28, 2011
I am trying to Import an XML file into Excel and then Export the data to CSV. I did the Import Data steps manually in Excel while recording a Macro. I am basically using those commands in VB.NET.
Try
xlWBook.XmlImport(filename,, True, xlRange.Cells(1, 1))
xlWBook.SaveAs(outFile, xlCSV, False)
[code].....
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Oct 27, 2011
i want to know how interop.speechlib.dll works and reads the English text because i want to Develop a Project that reads other languages.
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May 30, 2011
I have Office 2007 installed on my Win7 development machine, however I want my Office-reliant VB.Net app to reference/work with, Office 2003 and above. I tried installing the Office 2003 interops redistributable but the installation tells me that I need
to have Office 2003 installed. Is there a way I can install the Office 2003 interops so that my app can have references to Office 2003 and thus work on Office 2003, 2007 & 2010?
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Mar 29, 2009
I created a class named person and interface IPerson and tried to call this class in VB6 form. the class structure is given below
[Code]...
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Oct 2, 2009
Now i'm using visual studio 2010 beta1 and Interop.MSHierarchicalFlexGridLib.dll file is installed my computer but there was an error occured on start up of my project. so what would i do? screen shot of this error is:
1.Hide Call Stack
at AxMSHierarchicalFlexGridLib.AxMSHFlexGrid.AttachInterfaces() at System.Windows.Forms.AxHost.GetOcxCreate() at System.Windows.Forms.AxHost.set_Site(ISite value) at System.ComponentModel.Container.Add(IComponent component, String name) at System.ComponentModel.Design.DesignerHost.Add(IComponent component, String name) at
[code]....
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Apr 4, 2012
I'm using the InteropFormsToolkit version 2.1. I'm trying to make sure that when a .NET form loads from an event being thrown on the VB6 form, that the .NET form can stay on top. I've tried many things and can't get anything to work. I've tried everything from z-index, to adding a managed call into User32.dll to push it to the forefront, etc.
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