Accessing COM component from JScript - COM Discussion Boards

Really basic Automation question

25-Jul-07 20:32

MAW30 wrote:
Platform from Any CPU to x86

That's what I meant when I said 32-bit version of your application.

Sohail

modified 21-Apr-21 21:01pm.

hairy_hats23-Jul-07 4:26

hairy_hats

23-Jul-07 4:26

I'm sure this is really basic, but if I create a Document using a COleDispatchDriver-derived interface, how can I keep that Document open after the program that created it closes?

Re: Really basic Automation question

User 21559723-Jul-07 5:28

Re: Really basic Automation question

23-Jul-07 5:28

I am not too sure about this, but you can implement a solution using an extra AddRef-Release from withing Document

Sohail

modified 21-Apr-21 21:01pm.

Roger Broomfield2-Aug-07 21:22

Roger Broomfield

2-Aug-07 21:22

It depends on the Application you are automating.
For example automating Word you just call word_application.SetVisible(TRUE) but for Excel you should call excel_application.SetVisible(TRUE) followed by excel_application.SetUserControl(TRUE) and of course dont call Close() on the document.

Accessing COM component from JScript

PriyaJ.220622-Jul-07 23:36

22-Jul-07 23:36

I have a COM component. I want to access the component through a HTML file. I'm trying to create COM object using Java Script. Can anyone tell me how to do this?

Thanks,
Priya

User 21559723-Jul-07 0:53

23-Jul-07 0:53

Does XMLHttp Example[^] help?

Sohail

modified 21-Apr-21 21:01pm.

PriyaJ.220623-Jul-07 2:01

23-Jul-07 2:01

Thanks Sohail.But still i'm able to access a function within the script. To access a component method i need to create a com object in the script. How should i go about creating a COM object?

User 21559723-Jul-07 5:22

23-Jul-07 5:22

The link I provided has a sample JavaScript code to create XMLHttp object and call its methods.

Following is the syntax of creating XMLHttp object
var xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")

where "Microsoft.XMLHTTP" is the version independent ProgId of XMLHttp COM Component.

In your case, replace "Microsoft.XMLHTTP" with your components ProgId.

The above said, is example of creating COM objects in IE. For Mozilla refer the same link and the example.

Sohail

modified 21-Apr-21 21:01pm.

PriyaJ.220623-Jul-07 17:16

23-Jul-07 17:16

Ya I have tried doing this, but when I create an ActiveXObject it throws an error which says "Automation server can't create object", when I searched through the net I got to know enabling "Initialize and script activeX controls not marked as safe" in IE solves this error. But after enabling this I'm getting a Undefined error. This made me think there should be some other way of creating my com object. When I try creating a wscript.shell object it works fine. I get a problem only when i try creating my COM object.
Priya

User 21559723-Jul-07 18:00

23-Jul-07 18:00

PriyaJ.2206 wrote:
"Initialize and script activeX controls not marked as safe" in IE solves this error

Yes, I read about this.

PriyaJ.2206 wrote:
But after enabling this I'm getting a Undefined error.

What is the error number and description? Do you get undefined error when creating object or calling its method?

Sohail

modified 21-Apr-21 21:01pm.

PriyaJ.220623-Jul-07 19:08

23-Jul-07 19:08

Its IE script error dialog, it shows line number, code no. as 0, error as "Unspecified error". The line number which is shows in the line at which object is created ie. var obj = new ActiveXObject("MyComponent.MyComponentObj").
Error occurs at creating object line.

Priya

User 21559723-Jul-07 19:57

23-Jul-07 19:57

What version of IE are you using?

Sohail

modified 21-Apr-21 21:01pm.

PriyaJ.220623-Jul-07 19:58

23-Jul-07 19:58

IE6

Priya

User 21559723-Jul-07 21:01

23-Jul-07 21:01

Does the following sample work in your browser (It works fine on my IE6 browser)

<html><br />
<head><br />
<script type="text/javascript"><br />
var xmlhttp;<br />
<br />
function testXMLHttp()<br />
{<br />
xmlhttp=null<br />
// code for Mozilla, etc.<br />
if (window.XMLHttpRequest)<br />
  {<br />
  xmlhttp=new XMLHttpRequest()<br />
  }<br />
// code for IE<br />
else if (window.ActiveXObject)<br />
  {<br />
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")<br />
  }<br />
if (xmlhttp!=null)<br />
  {<br />
  alert("Your browser does support XMLHTTP.")<br />
  }<br />
else<br />
  {<br />
  alert("Your browser does not support XMLHTTP.")<br />
  }<br />
}<br />
</script><br />
</head><br />
<body onload="testXMLHttp()"><br />
<br />
</body><br />
</html>

Sohail

modified 21-Apr-21 21:01pm.

PriyaJ.220623-Jul-07 21:08

23-Jul-07 21:08

Thanks Sohail,
Actually when i was trying to fix it up, I came to know that the problem is only when accessing my component. I tried creating another simple component and accessed it by creating object through ActiveXObject, it works fine.

I'm creating a CAxWindow object and embedding the html content into a toolbar using CAxWindow's create control method. Now I doubt whether creating a CAxWindow causes the actual problem.

Priya

User 21559723-Jul-07 21:16

Pass user defined type array

23-Jul-07 21:16

PriyaJ.2206 wrote:
Actually when i was trying to fix it up, I came to know that the problem is only when accessing my component. I tried creating another simple component and accessed it by creating object through ActiveXObject, it works fine.

Good.

Sohail

modified 21-Apr-21 21:01pm.

scheewie20-Jul-07 3:23

scheewie

20-Jul-07 3:23

Hi,

I'm trying to get a c# server component to pass a user defined type array to a VB6 client component through COM+. Is this possible with early binding?

I have created a c# component that works fine in COM (it passes bool, int etc). But when I try to pass a user defined type array, the array received in VB6 is empty (0 items), even tough I force the c# component to return at least one item in the array.

Heres my code:
C# function:
public MyType[] MyTypes()
{
MyType[] mt = {new MyType()};

return mt;
}

VB6 call:
Dim tool as MySpace.Tools
Dim retVal() as MySpace.MyType
Set tool = new MySpace.Tools

retVal = tool.MyTypes

Output UBound retVal gives 0 items.

Can't I pass arrays like this between C# and VB6 in COM+?
What is the solution to my problem?

Thanks in advance!

BR
Øivind

Re: Pass user defined type array

sthotakura23-Jul-07 8:02

sthotakura

23-Jul-07 8:02

try return them as Object s

Cheers,
Suresh

How to include header file "Gdiplus.h" in IDL file

Bidesh Mukherjee18-Jul-07 21:26

Bidesh Mukherjee

18-Jul-07 21:26

Hi all,

I have static lib which i want to convert into COM DLL. so have write an IDL file.
In this IDL file i have to define a structure which contains another structure COLOR which is defined in "Gdiplus.h".

My question is whether i can add this header file "Gdiplus.h" in the IDL file?
If yes then how. note that after including the "Gdiplus.h" i have mention its namespace also which is Gdiplus.

I have done it by including #import "Gdiplus.h" but error such as this is generated

C:\Program Files\Microsoft Platform SDK for Windows Server 2003 R2\Include\Gdiplus.h(25) : error MIDL2025 : syntax error : expecting an interface name or DispatchInterfaceName or CoclassName or ModuleName or LibraryName or a type specification near "namespace"

The IDL file for your reference...

//----------------------------------------------------------------------------
// File: Control.idl
//
// Desc: Interface definition for the IControl
//
//----------------------------------------------------------------------------

import "oaidl.idl";
import "ocidl.idl";
import "Gdiplus.h";
using namespace Gdiplus;

cpp_quote("// Structure containing the various color details of the meter display")
typedef struct _ColorInfo
{
Color NeedlePointerColor;
Color NeedleJointColor;
//Color TextColor;
COLORREF TextColor;
Color LargeGridColor;
Color SmallGridColor;
Color BackGroundColor;

// Constructor
_ColorInfo()
{
NeedlePointerColor = Color(255,163, 163, 163);
NeedleJointColor = Color(255,255, 255, 0);
//TextColor = Color(255,255, 255, 255);
TextColor = RGB(255, 255, 255);
LargeGridColor = Color(255,255, 255, 255);
SmallGridColor = Color(255,255, 255, 255);
BackGroundColor = Color(255, 0, 0, 0);
}

// Copy Constructor
_ColorInfo(const _ColorInfo &ColorInfo)
{
NeedlePointerColor = ColorInfo.NeedlePointerColor;
NeedleJointColor = ColorInfo.NeedleJointColor;
TextColor = ColorInfo.TextColor;
LargeGridColor = ColorInfo.LargeGridColor;
SmallGridColor = ColorInfo.SmallGridColor;
BackGroundColor = ColorInfo.BackGroundColor;
}

// Assignment operator overloading
_ColorInfo & operator = (const _ColorInfo &ColorInfo)
{
NeedlePointerColor = ColorInfo.NeedlePointerColor;
NeedleJointColor = ColorInfo.NeedleJointColor;
TextColor = ColorInfo.TextColor;
LargeGridColor = ColorInfo.LargeGridColor;
SmallGridColor = ColorInfo.SmallGridColor;
BackGroundColor = ColorInfo.BackGroundColor;
return *this;
}
} COLORINFO;

//-------------------------------------------------------------------------
// IControl Interface Confused | :confused:

// Desc: Exposes initialization method for the Control dll
//-------------------------------------------------------------------------
[
object,
uuid(5BC8F091-28C0-42aa-AD10-AA78E612D6AA),
version(1.0),
helpstring("IControl Interface"),
pointer_default(unique)
]

interface IControl : IUnknown
{
cpp_quote("// Displays the control")
[id(2), helpstring("method ShowControl")]
HRESULT ShowControl( );
}

//{5E3CE754-FCC9-454e-B4BE-D1DD470BAF1E}
//{ 0x5e3ce754, 0xfcc9, 0x454e, { 0xb4, 0xbe, 0xd1, 0xdd, 0x47, 0xb, 0xaf, 0x1e } };
[
uuid(5E3CE754-FCC9-454e-B4BE-D1DD470BAF1E),
helpstring("Meter Class")
]
coclass Meter
{
[default] interface IControl;
};

Can anyone help me.

Thanks,
Bidesh

Re: How to include header file "Gdiplus.h" in IDL file

User 21559719-Jul-07 20:44