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Hi Luc,
Thanks for the reply. To answer a few of your questions, i tried several programming techniques, but this is the only way I can get it done, after a month of trial and error. The means why i program it that way, meaning the thread launching another thread and aborting itself, is becasue the threads run on different desktops. I also need global keyboard hooks, but they should be unhooked before the thread receives an abort.
Kind regards,
Nick verlinden
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Hi Nick,
we are missing a lot of context here.
seems you have two desktops (meaning two PCs I guess), some threading problems,
and something that starts to work after one month of trial&error, but not quite.
you must explain it all (in a top-down description) if you want anything helpful,
and probably provide several code snippets too.
Luc Pattyn [Forum Guidelines] [My Articles]
this weeks tips:
- make Visual display line numbers: Tools/Options/TextEditor/...
- show exceptions with ToString() to see all information
- before you ask a question here, search CodeProject, then Google
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Hi Luc!
I'm trying not to give too much information away  , but i know that i will have too, so here it goes. I have multiple desktops "desktops as in windows desktops, not computers, for example winlogon is also a desktop (winlogon is the desktop where the alt+CTRL+DELETE window is shown)" when the user presses a key on the keyboard, it switches to antoher desktop. But since the keyboard hook is only valid in the desktop where it is being launched, so i have to abort the thread in the previous desktop and launch a new thread in the new desktop, else the user can't switch back to the previous one. if the user switches back to the previous one, the routine repeats. the problem is that the thread that was listening on the previous desktop does not release its used memore, well that's what i think at least. It has unmanaged code for the keyboard hooks.
Is that helpfull?
Kind Regards,
Nick Verlinden
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Hi Nick,
With so little information I can't help you effectively.
I don't understand how a keyboard hook would imply a thread, a hook lets you attach
your code to some event, the event itself provides the thread, you should not care
about that.
And as I said before I object to aborting a thread.
You probably want to neutralize an existing hook temporarily; you could do that
by having some flags that get tested in the hooked procedure. Or you may choose
to remove the hook (e.g. when a "desktop" deactivates), that would require
an event to call the right system function, no abort involved !
That is all.
Luc Pattyn [Forum Guidelines] [My Articles]
this weeks tips:
- make Visual display line numbers: Tools/Options/TextEditor/...
- show exceptions with ToString() to see all information
- before you ask a question here, search CodeProject, then Google
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Hi Luc!
Thank you for your reply, I will try to revise my code a bit, but it's gonna take a while. Thank you for your help Luc! Maybe i'll get the chance to help you some day, who knows!
Kind Regards,
Nick Verlinden
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Hello,
I have to show a ContextMenuStrip in the Header of the DataGridView.
In the event
ColumnHeaderMouseClick do datagridview i catch the coordenates e.X and e.Y of the mouse, but the ContextMenu doesn't appear where the mouse is, i always
appears in the first columns.
look the image
thank you a lot
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The e.X and e.Y coordinates are probably local. Convert them to screen coordinates before showing the context menu:
Point localPoint = new Point(e.X, e.Y);
Point screenPoint = dataGridView.PointToScreen(localPoint);
myContextMenu.Show(screenPoint...);
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Please provide me code that converts PDF into JPEG without using any third part dlls.Thanks in Advance...
adil kazmi
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Tell us first what you did to find a solution to this problem. (hint : Google)
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I tried in Google but didn't get the required solution.
adil kazmi
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adilkazmi wrote: without using any third part dlls
Good luck with that! You won't find one. And noone is going to write the code for you.
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hey..Mind your bluddy language..I am not saying you to write the code.
just do your work...
don't give pain to your knee..[;(]
adil kazmi
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adilkazmi wrote: hey..Mind your bluddy language
It would appear to me that you are the one using profanity (badly spelled profanity at that)
adilkazmi wrote: I am not saying you to write the code
True, you said "provide me code". But "provide" implies that the person you asked must do the work to create the code, or do the work to find the code. Either which way, you are asking others to do your work. Perhaps if you had phrased your question in a less provokative way you would get a better response. e.g. "Help me find the code" that implies to are trying to do the work but need assistance. We like to help people. We especially like to help people that show that they are trying to help themselves.
adilkazmi wrote: don't give pain to your knee
 I can only imagine that is some idiomatic expression literally, rather than figuratively, translated.
-- Always write code as if the maintenance programmer were an axe murderer who knows where you live.
Upcoming FREE developer events:
* Glasgow: Agile in the Enterprise Vs. ISVs, Mock Objects, SQL Server CLR Integration, Reporting Services, db4o ...
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My website
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You should know by now that when you post to these forums, the people who want to help you are volunteers and have no obligation to answer your questions or write your code. This subject matter of converting pdf to image is primarily undocumented and is left to expensive third party controls to solve the problem and you will just have to live with it.
Regards,
Thomas Stockwell
Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.
Visit my homepage Oracle Studios[ ^]
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Hello,
I have a data grid view, and what I am trying to do is, grab all the column headers and put them into a combo box or list box.
what I have so far is:
foreach (DataColumn column in this.dataGridView1.Columns)
{
this.listBox1.Items.Add(column.ToString());
}
I get an error with this, it is:
"Unable to cast object of type 'System.Windows.Forms.DataGridViewTextBoxColumn' to type 'System.Data.DataColumn'"
Any help would be apreciated.
Thanks
J
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you can try:
foreach (DataColumn column in this.dataGridView1.Columns)
{
this.listBox1.Items.Add(column.HeaderText);
}
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Thanks... The end result that I ended up with is:
foreach (DataGridViewColumn column in this.dataGridView1.Columns)
{
this.listBox1.Items.Add(column.HeaderText);
}
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this.dataGridView1.Columns returns a collection of GridViewColumn, not DataColumn. In this case, the column returned is a specialized version of GridViewColumn which contains a textbox.
<br />
foreach (GridViewColumn in this.dataGridView1.Columns)<br />
{<br />
this.listBox1.Items.Add(column.HeaderText);<br />
}<br />
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Thank you for your help, I added a identifyer, and it worked great! Thanks.
Here is the end result.
foreach (DataGridViewColumn column in this.dataGridView1.Columns)
{
this.listBox1.Items.Add(column.HeaderText);
}
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You're welcome
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hi all
abstract class c
{
abstract function()
}
class c1:c
{
override fucntion()
{
//
}
void function()
{
}
}
class c2:c1
{
c1 obj=new c1()
obj.//how do i differenciate that i wanna call overrided function and ordinanry function of c1
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c.function will always call the overrided method. You cannot call the base one. If that's what you want, don't use overrides, using hiding:
class Base
{
public void Foo() { ... }
}
class Derived : Base
{
public new void Foo() { ... }
}
Base obj = new Base();
obj.Foo();
Derived derived = new Derived();
derived.Foo();
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Hello,
I'm having a problem that I thought would be very easy to fix. It could just be something small I am missing. I am loading a string that contains an XPath query. Inside the string I have a couple variables being loaded from an XML request. My line: XmlNodeList regionList = root.SelectNodes(xpathRegion); is throwing an exception when the variable includes an ' like Amp'd for example. I can check for characters easy enough and remove that character, but I actually need to leave it as the query needs to search based on the exact name.
I am trying the following:
string oldText = catName;
string newText = oldText.Replace("'", "\\'");
I figured this would escape the first slash, and replace the ' with \' but it actually shows up as \\'
if I change the line to string newText = oldText.Replace("'", "\'"); only the ' shows up in the string.
I can't seem to get newText to contain Amp\'d so that when used in the XPath it finally ends up the way it was.
Is there a different method I should use, or am I making some type of beginner error? Thanks,
Forrest
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