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Hi,
I looking for create dynamically some control in a form with the possibility of moving each control anywhere in the form.
I would like to store the position and store it to a xml files.
After create some config, I would like to restore a specific config.
My question is :
How can I moving each control create dynamicaly with the mouse ?
How can I retrieve the position of each control in the form ?
Best Regards
youssef
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In the class level :
Point p = new Point(this.button1.Location.X,this.button1.Location.Y);
In the mouse down event :
void form1_mousedown()
{
//Write some code to add the point p to the config file ,Ican't remember how right now.
this.p = new Point(-e.X,-e.Y);
}
In the mouse move event :
void form1_mousemove()
{
if (e.Button == MouseButtons.Left)
{
Point mousepos = Control.MousePosition;
mousepos.Offset(this.p.X,this.p.Y);
this.button1.Location = mousepos;
}
}
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How to suspend drawing operation of a form while a block of operations is done ?
For example I need to draw some things on the form and to move some controls so that the form doesn't repaint after each of them was moved.
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I'll give this a shot but a .NET guru might be able to point out a fatal flaw in my case, but here goes.
I know for sure that we could do something like this with streight WinAPI stuff but how will .NET controls handle it. Who knows.
Anyway the theory works like this. The message pump for your application is dispatching messages to all of your windows and controls. Just disable the pump, do your thing with the controls (in a non-gui thread) but be carefull not to use any blocking calls that rely on a message back (the pump is off now remember), then when you are all done, turn the pump back on and issue a WM_PAINT. I've done similar things in C++ using the WinAPI without hitches (usually). Also note that the manipilation of the controls is being done in a NON-GUI thread but I think that as long as you are carefull about what you are doing to those controls, you should be alright. Be quick though because I believe windows sends some kind of a heartbeat message every so often and if it detects that your pump is down, it'll pop up a dialog saying your app has stopped responding. Not sure the mechanism winsdows is using for this but i suspect it's using a WM_NCPAINT to detect this somehow.
Not sure how to turn the pump (message dispatcher) off in .NET application but I assume it's probably pretty easy.
*** NOTE
I assume that the controls you try to move about the form are issuing an Invalidate which causes the main form and the control to receive a WM_PAINT... Make sure you are not issuing and Invalidate or a refresh anywhere in your code that moves these around until you are all done.
Probably not too much help but it'll give you a starting point.
.NET GUI gurus, any ideas? Will this blow up in his face in .NET?
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Yes, I have done it like this.
Maybe there is a certain function in .NET that makes the same , but in an easier way.
Something like:
BeginUpdate();
.... some code here ...
EndUpdate();
Between these 2 tags the controls are not repainted.
Now I have made it through message filtering, i.e. I have a variable , which when set TRUE, paint messages are not allowed to be dispatched to controls contained in the form.
Works well.
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SuspendLayout();
... do your control moving, etc
ResumeLayout();
--
Help me! I'm turning into a grapefruit!
Buzzwords!
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SuspendLayout is a bullshit.
It doesn't work as it should. It do blocks some of the controls repainting, but allows others.
I have tried it many times - and it never worked as expected.
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Heh, fair enough.. it's worked exactly as I wanted in the places I've used it, anyway
Are you using custom controls? Perhaps those aren't too well designed for C# usage, or something 
--
Help me! I'm turning into a grapefruit!
Buzzwords!
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Actually I use standart controls in a usercontrol.
And this usercontrol is placed on a form.
Anyway - I read somewhere that SuspendLayout works only a few of the controls, because many of them has their own way of painting.
With standart controls, probably like buttons, labels - it may work.
With textboxes it doesn't work for sure (as it's controled by Windows).
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I need to serialize object of my class. I derives from a class which is not serializable. The questions:
1) Do I have to implement the ISerializable interfaace in my class?
2) Are enums serializable?? I have several enum fields in my class.
Thanks!
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#1 Just put the serializable attribute atop your class
#2 Yes they are and will be automatically, if used in your serializable class
the class you are deriving from not being serializable should not be a problem unless the class does some stuff that almost deliberlately makes it nonserializable. Give it a try, it should work flawlessly. Use the .NET serialization routines to save and restore your class, you'll find it works quite easily.
Use the .NET Binary serializer in your main code to save/restore these class objects.
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#1 Just put the serializable attribute atop your class
That won't work if the class he's extending is not serializable. From the MSDN[^]: "It is important to note that the Serializable attribute cannot be inherited. If you derive a new class from MyObject, the new class must be marked with the attribute as well, or it cannot be serialized. For example, when you attempt to serialize an instance of the class below, you will get a SerializationException informing you that the MyStuff type is not marked as serializable".
The only way around it is to use ISerializable
"I think I speak on behalf of everyone here when I say huh?" - Buffy
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hi
how i can load and display bitmap files in c#?
tanx®ards
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PictureBox pic = new PictureBox();<br />
Bitmab b = new Bitmap(@"Your path here");<br />
pic.Image = p;
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Hello gurus,
I would like to know, how I can add a browse for file or folders button in a PropertyGrid control?
Thanks for giving me a clue.
Best regards.
There is no spoon.
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Hey everyone!
I want to create a dialog window (SDI...) that will connect to the net to a certain address I'm writing inside my code. (so no one can change the address, only browse from the page they're getting).
Thanks!!!
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I take it there is a question in this post somewhere? What exactly are you having a problem with?
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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the thing is that I want to open the dialog window and it will directly connect me to a specific address (like http://www.codeproject.com).
I don't have any specific question because I don't know exactly how to approch this problem.
I looked in the board for an answer, for any kind of code that might help me with this, but I couldn't really find one.
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All you need to do is drop a web browser control on the form and use it's Navigate method with the address you want.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Thanks! 
I already have done that (after my last post), and I wrote another post about it.
the thing is that everything works fine as long as I don't use the Navigate method (and thats kinda useless), but when I'm tryint to use the Navigate method I'm getting: "InvalidActiveXStateException" exception.
I really don't understand why, I checked the web for an answer but I didn't find anything that really works.
now I'm lost !
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okay, solved it!
thanks!!!
and just for all of you out there who encounters the same problem,
the Navigate method has to occure only AFTER the form has been completly loaded, thats why we cannot use it in the constractor.
to make the Home page start downloading right after you open the window just use the Navigate method in the FrmMain_Load event function ("Load" event of the form).
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hi all,
I want to know how i can prevent the user to delete folder or some folder used C# language
thanks
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Unless you want to write a file system extension, you can't.
The best way to do it is assign the appropraite NTFS permissions to the security tab in the folder properties.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Hi,
I've been working on a problem whereby i'm trying to write an System.Drawing.Image object to an SQL Server database and then reload them from the database back into an System.Drawing.Image object but have come up aginst many brick walls.
I want to try a fresh approach so i need ideas as to how this could be achieved. I'm asking for solutions as I've already asked alot of other people for help on my current way of doing things and they have all been puzzled by the problem.
Thanks
Dafydd
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Hi Everyone,
Again I am posting my probs in this message board.
I want to make a program in which multiple "same" taskbarnotifier(Image) appears at same time looks like MSN messager. When multiple user login on MSN Messager at a same time a pop window(Image) appears right hand side(On the window Screen) "one by one".
I have already created multiple different Image.
When I use two or more different image, it pop up right hand side of window screen one by one, but not the case with same image, it only shows one.
Can you help me out.
Thanks
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