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How do I make the tooltip appear on a datagridviewcell (textBox column) even if the user doesn't move their mouse over it and while it is editing.
I am trying to implement a auto-complete feature that will show a tooltip with a match and ask the user to press a key if it is the correct match. It is identical to Visual Studio when one presses form1.FormClosed += and the tooltip box appears with an auto-complete of the event.
Thanks in advance.
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I want to print using RDLC on a preprinted forms/invoices and i have some questions..
1. How can I print on a specefic locagtion on the preprinted form/invoice?
2. If I am using the dot matrix printer, how can move the paper up and down while printing?
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hello....
anybody there? 
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Hi,
Actually, you don't need to think about locations and positions, just design your reports, you can use the preprinted form as a background (temporary) for alignments, and the printer will take care about the rest. Hope this will help.
best regards,
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hi,
i need a link or ebook on static classes. i not good at classes programing  i often repeat code, and i usually do the all the coding and classes i do it in the end.
i want more of static classes to use with the "set" and "get" type of code.
thanks
nelsonpaixao@yahoo.com.br
trying to help & get help
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How about MSDN[^]?
DaveBTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)Expect everything to be hard and then enjoy the things that come easy. (code-frog)
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hi,
I have some applications that connects to databases, i trigger edit/delete/insert and reports from the application.
everytime i trigger some action i open and after close the connection.
my question is; do i win something by opening connection in first time (i trigger whatever) and after that ask if connection is open and if not open it (close connection when formclosing event for exemple).
does it works better, faster, whatever?
(connection_string works and everthing else)
thanks
nelsonpaixao@yahoo.com.br
trying to help & get help
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nelsonpaixao wrote: does it works better, faster, whatever?
Not really. Best practice is to open the database only when you need to connect to it when working with the data, then when done working with the data, close the database connection.
"The clue train passed his station without stopping." - John Simmons / outlaw programmer
"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon
"Not only do you continue to babble nonsense, you can't even correctly remember the nonsense you babbled just minutes ago." - Rob Graham
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You can use P/Invoke to call unmanaged functions.
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Thanks.
Just read your article on minimizing applications to tray with P/Invoke and user32.dll's unmanaged functions,
Do you know anywhere i could find an example of the unmanaged function i would use to get a list of the icons and their context menus?
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What do you mean by list of the icons? Which icons do you mean?
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I would like to be able to display a list of applications in the shell tray.
Just like the application in the C++ Article above,
I was wondering if C# had a method to enumerate the tray icons (Bottom left of windows taskbar) and the context menus for them.
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You can use the methods and functions described in that article. You can use P/Invoke[^] to call functions from native dlls used in that article
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Ok thanks ill see what i can come up with 
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You are welcome
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Back Again,
Having read both your article, and the article i linked above,
I have tried to work this out in C# using P/Invoke and FindWindow().
My issue is with FindWindow, Im trying to find the window "Shell_TrayWnd".
But when i pass "Shell_TrayWnd" as a parameter for FindWindow i get the following exception:
Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Any idea how i could get around this so i can access the TrayWnd?
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Usually you get this exception when the signature of method you imported is incorrect. Have you looked at the source code of my articles to see how to declare FindWindow method? You can also find P/Invoke definitions here: P/Invoke[^] or you can use an addin for Visual Studio that generates signature - Redgate has one.
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Ah thanks,
Yeah i was declaring it wrong, I had a look in your source code and imported the dll and function same as you. Now it works and returns the IntPrt.
Back to research for next step.
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Nice to see that you are advancing. Please post if you need more help. Also, please report your progress when you are done  Thanks.
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Thank you for your interest it is extremely appriciated.
From what i can tell the next step is to get a count of the icons.
To do this i know i must send a message to the window with SendMessage().
I tried something along the lines of:
IntPtr intPrtShellTrayWnd = FindWindow("ToolbarWindow32", "");
int Count = (int)SendMessage(intPrtShellTrayWnd, TB_GETBUTTON, intPrtShellTrayWnd, "");
But i have no definition of TB_GETBUTTON. Im hoping to get it to result just a count of the icons, then ill worry about looping though the tray icons themselves.
Have you any idea on TB_GETBUTTON?
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According to the article link you provided you need to send TB_BUTTONCOUNT message. Why don't you follow the article? Secondly, TB_BUTTONCOUNT and TB_GETBUTTON are integeres defined in some header value. So you need to find out int value of these constants and then either define the constants in your program or just use the integer values.
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Thanks for the advice.
I read up a bit more, Also found this article:
http://www.codeproject.com/KB/shell/taskbarsorter.aspx[^]
Which supplies a good user32.cs for a win32api.
In the user32 class i have the TB_BUTTONCOUNT and GETBUTTON.
There is also a good TBBUTTON Struct for storing the hWnd info for each tray icon.
But that Article only works for the windows in the tray, not the notify icons.
To the point, I have gotten the count to work, and i can return the value of how many Nofication Icons there are,
But i am unsure of how for loop the send message to return each notify icons details.
In the C++ it is:
for(int i=0; i<count;>{
::SendMessage(m_hTrayWnd, TB_GETBUTTON, i, (LPARAM)data.GetData());
data.ReadData(&tb);
data.ReadData<traydata>(&tray,(LPCVOID)tb.dwData);
</traydata>
I have the TB_GETBUTTON but i am unsure of what to set for the data variable.
Could anyone offer some advice?
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As I can see from the code author uses a class written by him so you need to import that class in your program using DllImport. I am not sure how to do that so you can ask the author of the article.
By the way, I have just remembered that there is another way (and probably easier) to call native methods from your application. Are you familiar with Managed c++? It's sort of combination of native c++ and managed code. You can write a dll in managed c++ that does the same job as the article and you will not need to use DllImport. You will just include the header files you need. The dll will be managed so you can reference it from your c# application. Here is an example:
Wrapping Around a Native C++ Class[^]
Netting C++[^]
Wrapping Unmanaged Classes Using Managed Extensions for C++[^]
NativeWrapper: a tool for Native Interoperability[^]
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