Re: Getting COM type information in C# - C# Discussion Boards

Re: Manipulating ArrayList Obj thru reference

Philip Fitzsimons4-Jul-03 2:56

Philip Fitzsimons

4-Jul-03 2:56

If the object is a class then yes you can.
if its a struct then you can't as it will be copied.

"When the only tool you have is a hammer, a sore thumb you will have."

Breakpoint does not work

Mertli Ozgur Nevres4-Jul-03 0:05

Mertli Ozgur Nevres

4-Jul-03 0:05

Hi all
I have a problem with visual studio .net. I insert a breakpoint, but it says "The breakpoint will not currently be hit. No symbols have been loaded for this document". What can i do fix this?
Note: I am running the project in debug mode, not release mode.

Re: Breakpoint does not work

rahtrow4-Jul-03 5:26

rahtrow

4-Jul-03 5:26

This happens to me quite a bit....

1st, make sure in your project properties that the setting to Generate Debug Info is set to true. If it isnt, simply set it to be so an recompile.
If it is already true, set it to false, recompile, back to true, recompile. 9/10 that will get my breakpoints working again.
Good Luck!

Getting COM type information in C#

Simon_uk3-Jul-03 22:46

Simon_uk

3-Jul-03 22:46

Morning guys and girls,
I'm trying to get a list of methods from a COM object that I only know the ProgID of.
This is the code I thought would work...
---
Type t = Type.GetTypeFromProgID("xxx.yyy");
if (t != null)
{
MemberInfo[] members = t.GetMembers();
for (int i = 0; i < members.Length; i++)
MessageBox.Show(members[i].Name);
}
---
But this only seems to return methods that exist in c#'s object object (if you know what I mean!).
Anyone have any ideas?
Thanks in advance,
Simon.

Re: Getting COM type information in C#

Kant4-Jul-03 7:14

Kant

4-Jul-03 7:14

I did it from C++ like this. (I am still learning C#)

1. Get the ITypeLib by using LoadTypeLibEx[^] function.
2. Get the number of type descriptions from typelib via GetTypeInfoCount[^] method.
3. Then I used GetTypeInfo[^] and GetTypeAttr [^] methods.
4. Now play with TYPEATTR[^] members which contains all the info.

Use the links provided to find the solution for C#. Let me know how it works.

"...if you don't want to hear things that piss you off don't piss off other people. SIMPLE." - Steven Hicks
This signature was created by "Code Project Quoter".

Re: Getting COM type information in C#

Simon_uk6-Jul-03 22:23

Simon_uk

6-Jul-03 22:23

Thanks Kant,
I am using the LoadTypeLibEx method, and then using a System.Runtime.InteropServices.TypeLibConverter to convert it to an assembly. I can then get all the objects in the DLL by using reflection (GetTypes etc).

Cheers. Smile | :)

Re: Getting COM type information in C#

Kant7-Jul-03 4:59

Kant

7-Jul-03 4:59

Hmm.. Using TypeLibConverter, if you don't mind can you post the code snippet. I am just curious. Anyway I tried like this C#.

// via DllImport<br />
LoadTypeLibEx(strCOMLibName, REGKIND.REGKIND_DEFAULT, out oCOMTypeLib);<br />
if(oCOMTypeLib != null)<br />
{<br />
   TYPELIBATTR oTypeLibAttributes = new TYPELIBATTR();<br />
   Type oType = oTypeLibAttributes.GetType();<br />
..<br />
..<br />
   oCOMTypeLib.GetLibAttr(out hwndTLibAttr);<br />

"...if you don't want to hear things that piss you off don't piss off other people. SIMPLE." - Steven Hicks
This signature was created by "Code Project Quoter".

Re: Getting COM type information in C#

Simon_uk7-Jul-03 22:29

Simon_uk

7-Jul-03 22:29

This is what I did Kant:

LoadTypeLibEx(lstrFilename, RegKind.RegKind_None, out typeLib ); 
if (typeLib != null)
{
  AssemblyBuilder asm = converter.ConvertTypeLibToAssembly(typeLib, "tmplib.dll", 0, eventHandler, null, null, null, null );   
  Type[] types = asm.GetTypes();  //Get an array of types contained in the assembly
}

Once you have this, you can loop around the types to get the methods...

for (int i = 0; i < types.Length; i++)
{
  MemberInfo[] meths = types[i].GetMembers();
  for (int j = 0; j < meths.Length; j++)
  {
    MessageBox.Show(meths[j].Name);
  }
}

Hope this is useful to you. Thanks again for your help,
Simon.

Re: Getting COM type information in C#

Kant8-Jul-03 7:06

Kant

8-Jul-03 7:06

After your post, I read the information about TypeLibConverter. I went in a different route to get the info. (I followed the same path I did in C++)

Anyway, I want to write a small article about this. Do you want to jump in?

Except for MSDN, I haven't found any useful info about reading COM information via C# anywhere.

"...if you don't want to hear things that piss you off don't piss off other people. SIMPLE." - Steven Hicks
This signature was created by "Code Project Quoter".

Re: Getting COM type information in C#

Simon_uk9-Jul-03 2:08

Simon_uk

9-Jul-03 2:08

Hi I don't really think I know enough to write an article to be honest. Also, I'm not very good at explaining stuff in a concise fashion! Smile | :)

Feel free to ask me any questions or use any of my code in the article though (and I'll rate it a 5 for ya! Wink | ;)

).

Cheers,
Simon.

Drag Drop

gharrison3-Jul-03 22:21

gharrison

3-Jul-03 22:21

I have created a UserControl that allaws a DataObject to be dragged.
The DataObject contains a Bitmap and string.
When the DataOject is dropped into MSWord. MSWord displays the text.

Does anyone know our to force MSWord to display the Bitmap.

I have tried adding the Bitmap to the DataObject first followed by the string.

But this has no effect.

Finding Window Postion in relation to the entire screen

jtmtv183-Jul-03 14:39

jtmtv18

3-Jul-03 14:39

hi, i have a real quick question. I just need to find the X,Y (0,0) for the location of my programs Window in relation to the entire Desktop. Reason being is i use a API call called GetPixel() that uses X,Y (location) as a overload...but its X,Y are global X,Y i.e the entire desktop. I need to transfer my X,Y inside my program over to Global Desktop X,Y's. is there a easy way to do this ?

Thanks for your help, Time. If you need me to explain clearer please let me know

Jesse M.

The Code Project Is Your Friend...

Re: Finding Window Postion in relation to the entire screen

J. Dunlap3-Jul-03 14:53

J. Dunlap

3-Jul-03 14:53

Use Form.PointToScreen(). Smile | :)

"Blessed are the peacemakers, for they shall be called sons of God." - Jesus

"You must be the change you wish to see in the world." - Mahatma Gandhi

Re: Finding Window Postion in relation to the entire screen

jtmtv183-Jul-03 15:05

jtmtv18

3-Jul-03 15:05

Thank you very much Sir.

Jesse M

The Code Project Is Your Friend...

How to combine different projects into one big project.

ChiYung3-Jul-03 12:22

ChiYung

3-Jul-03 12:22

I would like to know how can i combine and connect different projects into one big project?

e.g.
i have an existing project - TEST_A. I want to add this project into my new project (current working this one) - TEST_B.

I know i can add "existing project" into my current project. But i don't know how to connect both project, so that i can access the form in TEST_A.

Please help!!!

Confused | :confused:

Re: How to combine different projects into one big project.

Anonymous5-Jul-03 21:03

Anonymous

5-Jul-03 21:03

Create a blank solution, then you can add as many projects to that solution. To add a new solution click on File > New > Blank Solution.

Re: How to combine different projects into one big project.

ChiYung5-Jul-03 21:10

ChiYung

5-Jul-03 21:10

But how can i access the items in different projecT?

delay or producing a gap

Asim N.3-Jul-03 5:35

Asim N.

3-Jul-03 5:35

HELLO,
here is a little problem that i am facing.
in a foreach( ) loop, i want to display a message box or anything,

but i want to display that after some gap. i.e. PRODUCING SOME DELAY

is there any method like delay() in c/c++?
i found timer class for windows forms in c#, but there is some problem

with it. it just says invalid com component exception after each

display of the message box. i just want to have a gap of 30 seconds. if there is anyother way plz guide me.
can someone guide me on this. A piece of code or link.
i would really be thankful on this help.
LOOKING FOR HELP
ASIM.

Asim

Re: delay or producing a gap

dazinith3-Jul-03 5:54

dazinith

3-Jul-03 5:54

Thread.Sleep(1500);

will cause a 1.5 second pause before going to the next line of code..

still a newb.. cut me some slack :P
-dz

WMI Provider

mavriq1013-Jul-03 5:35

mavriq101

3-Jul-03 5:35

Can some one point me to a good resource on WMI using c#

Thanks

Re: WMI Provider

Mazdak4-Jul-03 11:09

Mazdak

4-Jul-03 11:09

There is very good one here. I don't have the link now,but search this site or go to C# section.You can find it there.

Mazy

No sig. available now.

C# Excel Add-in Question

Francis B.3-Jul-03 3:45

Francis B.

3-Jul-03 3:45

Hi!
In one of my base classes, I have a function which receive a callback from another application. In this function, I would like to access Excel.Application object but I receive an exception: QueryInterface for interface Excel._Application failed.
If my class were inherited from Windows.Forms, I could use BeginInvoke function. So I would like to know a way to access Excel.Application object in my callback function.

Build with C# for Excel Object 9.0 (Excel 2000)

Thanks in advance!

Creating Tab Forms

mcgahanfl3-Jul-03 3:25

mcgahanfl

3-Jul-03 3:25

Can you point me to a book or article that explains how to create tabbed forms?

Thank you

P.S.
What is the equivelent of BeginWaitCursor()?

Re: Creating Tab Forms

dazinith3-Jul-03 5:52

dazinith

3-Jul-03 5:52

i am not sure about any tabbed form articles, youll have to search.. but they are built into windows.forms.. they are listed in your toolbox as 'TabControl'.. you should be able to use it pretty easy..

and here is the cursor question

Cursor.Current = Cursors.WaitCursor;
// do whatever
Cursor.Current = Cursors.Default

still a newb.. cut me some slack :P
-dz

Re: Creating Tab Forms

Rocky Moore3-Jul-03 20:30

Rocky Moore

3-Jul-03 20:30

Will I do not know of an article on the topic, it is very easy to do in Visual Studio.

Place a TabControl on your blank form. Right click on it and select New Tab. Now start placing controls on that tab. At any time, right click the tab control and select Add Tab to make more tabs. You can switch between the tabs while in the designer.

Rocky Moore <><

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.