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Re: Platform invoke???

Stephane Rodriguez.8-Oct-02 19:31

Stephane Rodriguez.

8-Oct-02 19:31

[DllImport("ole32.dll", CharSet=CharSet.Auto)]

She's so dirty, she threw a boomerang and it wouldn't even come back.

Re: Platform invoke???

Vu Truong8-Oct-02 21:08

Vu Truong

8-Oct-02 21:08

Hi Stephane,

Thanks for your help.
I changed my codes as you suggest but it still doesn't work. I think I don't set type of parameters accurately.

Do you think my declaration below is correct?

[DllImport("ole32.dll", CharSet=CharSet.Auto)]
public static extern long CLSIDFromProgID(string ProgID, out Guid clsID);

Many thanks.

Re: Platform invoke???

Richard Deeming9-Oct-02 1:22

Richard Deeming

9-Oct-02 1:22

The return type is a 32-bit integer, which is int, not long.

Have you tried:

Type Excel = Type.GetTypeFromProgID("Excel.Application");
if (Excel == null)
    Console.WriteLine("Fail.");
else
    Console.WriteLine("OK.");

Re: Platform invoke???

Eric Gunnerson (msft)9-Oct-02 8:25

Eric Gunnerson (msft)

9-Oct-02 8:25

Can you explain what you're trying to do?

If you're trying to drive excel, you'd do that through COM interop, not through P/Invoke. You do that by adding the excel com component to your project (or through tlbimp if you don't have vs).

Re: Platform invoke???

Jörgen Sigvardsson9-Oct-02 13:43

Jörgen Sigvardsson

9-Oct-02 13:43

How would such an interop assembly behave on a system where excel is not installed? Would it crap out on me while loading the application or would it throw a bunch of exceptions at me when I try to instantiate the COM-objects?

--
Please state the nature of your medical emergency.

Re: Platform invoke???

Eric Gunnerson (msft)10-Oct-02 7:58

Eric Gunnerson (msft)

10-Oct-02 7:58

Hmm. I don't know the answer to that.

Re: Platform invoke???

David Stone9-Oct-02 14:21

David Stone

9-Oct-02 14:21

Ummm, Eric your company is giving us this: http://msdn.microsoft.com/downloads/default.asp?url=/downloads/sample.asp?url=/msdn-files/027/001/999/msdncompositedoc.xml[^] and they say to use that instead of doing any type of COM stuff. Just thought I'd let you know. Smile | :)

Norm Almond: I seen some GUI's in my life but WTF is this mess
Leppie: I made an app for my sister and she wouldnt use it till it was colorful enough
Norm:good point leppie, from that statement I can only deduce that this GUI must be aimed at children
Leppie:My sister is 25
-Norm on the MailMagic GUI

Re: Platform invoke???

Eric Gunnerson (msft)10-Oct-02 7:54

Eric Gunnerson (msft)

10-Oct-02 7:54

I didn't know we'd made those available.

The page you link is correct, you should use the primary interop assemblies rather than rolling your own.

Re: Platform invoke???

Jörgen Sigvardsson10-Oct-02 8:51

Jörgen Sigvardsson

10-Oct-02 8:51

Eric Gunnerson (msft) wrote:
you should use the primary interop assemblies rather than rolling your own

Any special reason for this?

--
Please state the nature of your medical emergency.

Re: Platform invoke???

Eric Gunnerson (msft)10-Oct-02 9:00

Eric Gunnerson (msft)

10-Oct-02 9:00

The big reason is that they're signed.

Re: Platform invoke???

Nick Parker10-Oct-02 9:29

Nick Parker

10-Oct-02 9:29

Eric Gunnerson (msft) wrote:
The big reason is that they're signed.

Sounds like political red tape typical from any company, am I right?... Wink | ;)

Nick Parker

The goal of Computer Science is to build something that will last at least until we've finished building it. - Unknown

Re: Platform invoke???

Eric Gunnerson (msft)10-Oct-02 10:17

Eric Gunnerson (msft)

10-Oct-02 10:17

Nick Parker wrote:
Sounds like political red tape typical from any company, am I right?...

I don't understand your point.

Re: Platform invoke???

Nick Parker10-Oct-02 10:20

Nick Parker

10-Oct-02 10:20

Eric Gunnerson (msft) wrote:
I don't understand your point.

I was only being facetious. Just trying to lighten things up in the C# forum. No bad feelings? Wink | ;)

Nick Parker

The goal of Computer Science is to build something that will last at least until we've finished building it. - Unknown

Re: Platform invoke???

David Stone10-Oct-02 11:34

David Stone

10-Oct-02 11:34

How much stuff do you not make available to us??? Suspicious | :suss:

Re: Platform invoke???

Eric Gunnerson (msft)10-Oct-02 11:51

Eric Gunnerson (msft)

10-Oct-02 11:51

This much (holding hands about 3 feet apart)...

Perhaps "released" would have been a better term.

Re: Platform invoke???

David Stone10-Oct-02 15:53

David Stone

10-Oct-02 15:53

Okay. Just wanted one more reason to work at Microsoft... Big Grin | :-D

Re: Platform invoke???

Vu Truong9-Oct-02 18:21

Vu Truong

9-Oct-02 18:21

Thanks for your reply.

I use Microsoft Excel Object Library to create and edit on Excel files. So I have to make sure that Microsoft Excel is already installed. I also want to check I can use ADOX on the user's computer or not. I think if getting CLSID of these components successfully, I can use them. Is it right?

Programmatically change a tab control that exists on another form.

Derek Smigelski8-Oct-02 11:52

Derek Smigelski

8-Oct-02 11:52

How do I programmatically change a tab control that exists on another form?

Re: Programmatically change a tab control that exists on another form.

David Stone8-Oct-02 12:25

David Stone

8-Oct-02 12:25

What about the tab control do you want to change? One of the tabs, the color, the placement? What?

Norm Almond: I seen some GUI's in my life but WTF is this mess
Leppie: I made an app for my sister and she wouldnt use it till it was colorful enough
Norm:good point leppie, from that statement I can only deduce that this GUI must be aimed at children
Leppie:My sister is 25
-Norm on the MailMagic GUI

Re: Programmatically change a tab control that exists on another form.

Derek Smigelski8-Oct-02 13:45

Derek Smigelski

8-Oct-02 13:45

One of the tabs.

Re: Programmatically change a tab control that exists on another form.

leppie8-Oct-02 14:50

leppie

8-Oct-02 14:50

Derek Smigelski wrote:
One of the tabs.

We just need a "little" bit more details, then we can answer you Smile | :)

Before you criticize a man, walk a mile in his shoes. That way, when you do criticize him, you'll be a mile away and have his shoes.

Re: Programmatically change a tab control that exists on another form.

Derek Smigelski8-Oct-02 14:58

Derek Smigelski

8-Oct-02 14:58

I have a parrent form and child form (with a tree control) docked left on the parent form. The 5 tabbed tab control is on the parent form. When a user selects a node in the tree say "Node 1", I want the "Tab 1" to be selected as a result of what the user selected in the tree control. If use selects "node 5" tab 5 will be select automatically.

Re: Programmatically change a tab control that exists on another form.

leppie8-Oct-02 15:11

leppie

8-Oct-02 15:11

OK, thats a bit better Smile | :)

treeView.AfterSelect += new TreeViewEventHandler( NodeSelected );

void NodeSelected(TreeViewEventArgs e)
{
  tabControl.SelectedIndex = e.Node.Index;
}

Now this will select the 2nd tab if u select the second node. You can do your own mapping to your liking Smile | :)

Before you criticize a man, walk a mile in his shoes. That way, when you do criticize him, you'll be a mile away and have his shoes.

Re: Programmatically change a tab control that exists on another form.

Derek Smigelski8-Oct-02 15:32

Derek Smigelski

8-Oct-02 15:32

Can't seem it find aname for the entire tab control (like in your example you have tabcontrol.) I have 5 tabs eached with a different name. Plus I get errors on ( NodeSelected ); saying more parameters are required.

Re: Programmatically change a tab control that exists on another form.

Gaul8-Oct-02 16:59

Gaul

8-Oct-02 16:59

Just to chip in, tabcontrol refers to the name of your TabControl variable (System.Windows.Forms.TabControl tabcontrol) as defined in your form class.

Gaul
Gaulles Technologies, Inc
http://www.gaulles.com

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