One thing you could do is this: - have a bitmap ("bm") the same size as the object you are drawing on, then get its graphics ("gbm") and fill with a white backcolor; - mimic all your drawing on gbm too, using any color but white; - when you need to know whether a point (x,y) is mask or not, look at bm.GetPixel(x,y) and the color will tell you. :) Luc Pattyn [My Articles] Nil Volentibus Arduum

5! Regards, Nish My technology blog: voidnish.wordpress.com You've gotta read this : Using lambdas - C++ vs. C# vs. C++/CX vs. C++/CLI

you might be lucky and find the solution here[^]; make sure to read all of it though. :) Luc Pattyn [My Articles] Nil Volentibus Arduum

Hello did you found any answer for this? Thanks.

Following are two of the various ways you can do this: 1. Attach the event handler once you are done with filling the DataGridView with data. 2. Have a boolean variable and use it to decide if the code inside the event handler should be executed or not.

This depends on your mail-server. Have you tried using a client such as thunderbird or outlock to test if it is possible? Some mail server support settings such as GMail. eyalbi007 wrote: I'll add myself as recipient (regular or CC or BCC), but it's a bit dirty... Yes, and also the one who recieves it, also will see it your CC and BCC

You're welcome! And thanks for posting the explanation. I knew it wasn't conversion from int to string that took the time, but I had no idea what it really was and your findings may be of use to someone else (including myself) some day. However, I think the way we're intended to avoid this is to call BeginEdit() and EndEdit() - this pattern is used with many controls to suppress expensive side-effects until EndEdit is called. For some reason I just didn't think about that. DataGridView v; v.BeginEdit(); try { // .. do a lot of editing } finally { v.EndEdit(); } (The BeginEdit is not part of the try block because we should only call EndEdit if BeginEdit has actually succeeded - though this is of course academic if the call to BeginEdit() always succeeds.)

Well for one thing, the SendMessage signature still isn't correct. You absolutely have to use those annoying IntPtr's otherwise it won't work. But then there's something else, I once heard (not sure how true it is) that progress bars in Vista may only be green yellow or red and that they have a special (different) message to change it. May be worth investigating.

Eddy Vluggen wrote: Instead of deleting the old log, start overwriting I did not mean to delete the log file. We can create a new log file, such as: 1.log 2.log ... So we will not lose any information. However, if the log file size is too huge, we also need to consider the disk space. I Love KongFu~

You're talking about two different "Event" types. The event you're talking about is nothing but an entry in a log. It's not a programming "Event". There is no programming event like you're thinking about. There is no event to subscribe to to catch this. Your code will have to watch the event log and look for the occurance of the entry you want. A guide to posting questions on CodeProject[^] Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic      2006, 2007, 2008

Yeah! Tks a lot!

Hi, On double clicking on the grid, the event invoked is: Private Sub DataGridView1_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick End Sub this gives RowIndex and ColumnIndex, whereas you will get e.location under the mouse click events, such as: Private Sub DataGridView1_CellMouseDoubleClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellMouseEventArgs) Handles DataGridView1.CellMouseDoubleClick End Sub Hope this helps. Vinay ComponentOne LLC. www.componentone.com

have you made sure that you release all of your COM objects (like excelApp) when you're finished with them? Marshal.ReleaseComObject(...) : http://msdn.microsoft.com/en-us/library/system.runtime.interopservices.marshal.releasecomobject(VS.80).aspx[^]

Hi I think it has something to do with the Memory Management in .Net (which includes the garbage collector). As far as i understand it, object are not located fix in Memory. this means an Array of byte can "move" inside the memory. That's why you get an exception when you try to get the Memory Address of an Item of the Array. but you can force .Net to keep an Array at the same Location for a limited time. for this there's the fixedbr mode="hold" />i'm not quite sure about this, but i think fixing is only for reading addresses.. so i don't think it's possible to set the first entry of a short array to the address of the first item of a Byte Array. but maybe google knows more if you ask it about fixed unsafe array manipulation or something :) greets m@u

OK, So I've created a new project which has only one ListView with two items, and one event hadler - for SelectedIndexChanged event. Here is the code: namespace TestListViewSelectedIndexChanged { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void listView1_SelectedIndexChanged(object sender, EventArgs e) { System.Threading.Thread.Sleep(500); System.Media.SystemSounds.Beep.Play(); } } } The Sleep is ment to hear both beeps. Now, whenever I select item, 2 beeps are heard. What's the explanation for this behaviour if the event only fired once? Pleae note that I do not suspect your knowledge, I'm sure it's bigger than mine. I just want to understand this phenomenon. Thanks, Eyal.

You can use a BinaryReader to easily read Int16 values. Create a Bitmap object with the pixel dimensions of the image that you want to show. Get the values from the 3D data and insert as color values in the Bitmap. An easy way to set the pixels in the Bitmap is to use the SetPixel method. A more complicated way (but somehing like 100 times faster) is to use the LockBits and UnlockBits methods and unsafe code (pointer operations) to write directly to the memory area for the Bitmap. Despite everything, the person most likely to be fooling you next is yourself.

Get a reference to the item(s) that are selected from the SelectedItems property of the control. Then set the BackColor property of each item to an appropriate colour. Paul Marfleet "No, his mind is not for rent To any God or government" Tom Sawyer - Rush