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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).
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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.
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Hmm. I don't know the answer to that.
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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.
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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.
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The big reason is that they're signed.
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Eric Gunnerson (msft) wrote:
The big reason is that they're signed.
Sounds like political red tape typical from any company, am I right?... 
Nick Parker
The goal of Computer Science is to build something that will last at least until we've finished building it. - Unknown
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Nick Parker wrote:
Sounds like political red tape typical from any company, am I right?...
I don't understand your point.
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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?
Nick Parker
The goal of Computer Science is to build something that will last at least until we've finished building it. - Unknown
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How much stuff do you not make available to us??? 
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
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This much (holding hands about 3 feet apart)...
Perhaps "released" would have been a better term.
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Okay. Just wanted one more reason to work at Microsoft...
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
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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?
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How do I programmatically change a tab control that exists on another form?
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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
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Derek Smigelski wrote:
One of the tabs.
We just need a "little" bit more details, then we can answer you 
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.
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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.
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OK, thats a bit better
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
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.
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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.
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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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How to change the status bar color?
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statusBar1.BackColor = Color.Black;
statusBar1.ForeColor = Color.White;
This'll put the back as black and the font as white...hope this helps.
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
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You don't. The status bar is one of those controls that doesn't allow you to do that by default.
This[^] thread on the dotnet list should tell you why that is and Mark Boulter offers a suggestion later in the thread (use the 'Next in topic' links to move through the thread).
James
Sig code stolen from David Wulff
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