|
I am having a hard time thinking of what logic or design will i put on my personal grading system
can you give me some advice on how to implement this system
thanks 
|
|
|
|
|
First of all, you have to explain what you mean by a "personal grading system".
|
|
|
|
|
My first question is about context menu. I was unable to find a way to make it work with form1 so I used this:
private void Form1_MouseClick(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
panel1.ContextMenu.Show(panel1, new Point(e.X, e.Y));
}
}
However i was also using
private const int WM_NCHITTEST = 0x84;
private const int HT_CLIENT = 0x1;
private const int HT_CAPTION = 0x2;
protected override void WndProc(ref Message m)
{
base.WndProc(ref m);
if (m.Msg == WM_NCHITTEST && m.Result.ToInt32() == HT_CLIENT)
{
m.Result = (IntPtr)HT_CAPTION;
}
}
protected override CreateParams CreateParams
{
get
{
int WS_DLGFRAME = 0x00400000;
CreateParams parameters = base.CreateParams;
parameters.Style = parameters.Style & ~WS_DLGFRAME;
return parameters;
}
}
to drag form around. So I need one of these things: to drag form by panel or to make panel send mousedown to form or a way to show context menu strip by clicking on form1.
Second question is about form border style. I have already removed control box and now I'd like to make border invisible as well. For now, border is set to sizable and I need a way to either make sizable border transparent or find a way to resize form without border.
Third question is about anchoring. When I resize form the textbox(anchor set to all 4 sides) stretches by the same amount as the form instead of staying in original proportion to the form. How do I go about fixing this?
Fourth question. I plan to use the app I'm building for reading of various text/html documents. I thought of using richtextbox, however it doesn't allow transparent background. I looked at Alpha blended textbox and related articles and it looks too complex for my skill level. So since I plan to use it only for reading and not editing is there an easier way to do this?
Fifth question. How to make form snap to screen edge(any side)?
Any answer to these questions is much appreciated.
|
|
|
|
|
Answer for the third:
Set the anchor to no anchor should do the trick I think (rather then all 4 sides)
Answer for the fourth:
I don't know of any easy way to do this with C# - I've tried to find an easy way a few times myself, but it always ends up quite complex.
As for the other questions, I dont know off the top of my head, but hopefully these answers have helped.
Chris
[Edit: Just looked again, and saw the context menu one - you need to create a context menu control, and then goto the form and check out its properties. One of them is called ContextMenu or something, and the properties window will give you a drop down list of all context menus you have created. ]
|
|
|
|
|
Thank you for answering.
About the first question. I found an answer elsewhere. 2nd bit of code disrupted it.
About the third, i tried all anchor combinations. Didn't work. Is there a way to fine tune by how much box stretches?
Edited: About fourth, I used this
openedFile = openFileDialog1.FileName;
string textData = System.IO.File.ReadAllText(openedFile);
Font drawFont = new Font("Arial", 10);
SolidBrush drawBrush = new SolidBrush(Color.Black);
surface.DrawString(textData, drawFont, drawBrush, 50.0f, 20.0f);
to display text without trouble, now I just need to get it to display where I want it.
Edit 2: Can't find a way to clear text when opening another file. Or to wrap text. Maybe create temp image that gets deleted on opening of new file?
modified on Saturday, September 27, 2008 12:43 AM
|
|
|
|
|
3) Seems strange to me that it didn't work, but as a last resort you can do something along the lines of:
Text1.X = (this.Width / 2) - (Text1.Width / 2)
To centre a textbox - you would need to play with the formulas a bit, but hopefully this gives you a pointer.
4) Does surface have a clear method so that you can delete text? Also to wrap text, I'd google for printing in C# - it uses a graphics object to construct pages of an image, so you should be able to find out about text wrapping there.
Chris
|
|
|
|
|
I have been developing a project in Visual C# 2008 Express.
Now I want to move the project to another folder in my computer. Since there is no "Save As" in the IDE, how can I do this?
Also, I want to pack the solution source code to distribution (zip/rar). Which files should I pack? I know that I don't need obj and bin folders.. but what about the rest of the files?
Finally, just a quick request: can you give me an example of use of different projects inside one solution?
|
|
|
|
|
You can just copy the folder that contains your project to another folder, then open the csproj with file/project/open. If you have other projects in your solution, you can add them back manually.
Might be easiest to just zip up your project folder, then delete bin/obj folders from the zip.
Example of different projects in one solution:
Main Project
Controls
Data Access Layer
Business Access Layer
Just an example.
- S
50 cups of coffee and you know it's on!
A post a day, keeps the white coats away!
|
|
|
|
|
Hi there, I someone can help me... this is driving me nuts...
I have a form (with textboxes and buttons) with dynamically created user controls (BasePanel) when the user presses the Add button. On that user control is a textbox.
When that user control gets created, one of two possible user controls (GeneralEntry - initially - or EventEntry) are added to that user control, which contains a series of maskedtextboxes. If the user types a letter in this first maskedtextbox, then the GeneralEntry gets replaced with the EventEntry user control, which has a different series of maskedtextboxes.
Now, what I want to have happen is that on the last textbox on the form, when the user presses Tab, it goes to the first maskedtextbox on the GeneralEntry, but it doesn't... it goes to the textbox on the BasePanel.
I have tried assigning all the tab orders so that the all in the correct order, but there seems to be a precedence of controls... form, then user control, then next user control, etc...
I have also tried suppressing the Tab key and forcing the SelectNextControl... but that's not working either, as the Tab key doesn't seem to be able to be suppressed or handled.
Does anyone have any suggestions please?
Thanks in advance!
Paul
One day I want to be a code monkey. Right now, I'm more like a code amoeba...
|
|
|
|
|
Some keys are treated in different way than others. Probably tab key is one of them. I think you will need to handle that in ProcessCmdKey method.
"If you had to identify, in one word, the reason why the human race has not achieved, and never will achieve, its full potential, that word would be 'meetings'." - Dave Barry
|
|
|
|
|
Thanks for that Dave.
A bit of a learning curve to use that method, but it seems like it will meet my needs.
Cheers
Paul
One day I want to be a code monkey. Right now, I'm more like a code amoeba...
|
|
|
|
|
Poolee wrote: Thanks for that Dave.
Who's Dave?
"If you had to identify, in one word, the reason why the human race has not achieved, and never will achieve, its full potential, that word would be 'meetings'." - Dave Barry
|
|
|
|
|
LOL, got the name from the siggie... *slaps self repeated ly* 
One day I want to be a code monkey. Right now, I'm more like a code amoeba...
|
|
|
|
|
What is the best way to parse an xml file?
the XML reader class or the Regex class?
I need to connect to an access database that could be located anywhere on the local system but will have a DSN set up in the ODBC connectors. I know how to read the reg and find out if the DNS is setup
can i write directly to the DSN or do I have to read the DSN settings and set my DB connection in the program?
|
|
|
|
|
I've found that the DSN connection is not the best way to connect to the database and found how to connect to it, I will look at if I can build the OLE connector from reading the Registry
|
|
|
|
|
XmlDocument
Why use ODBC? Better to use the OleDb connecter.
I cobble up connection strings from values in XML.
|
|
|
|
|
All of the code that has been written before I started at this job has been written in VBscript. very impressive in everything that has been via VBscript. We have a bunch of people who run these scripts that allow you to put the database anywhere. the VBscripts all use the ODBC connector to write to the DB, so I'm looking for the solution that will allow the flexibility of still putting the database anywhere on the computer.
Is the ODBC connection settings stored in an xml file? I'm going to look at building the OleDb connectionString if I can find something static to build it from.
thanks for the recommendation of Xmldocument
|
|
|
|
|
Do someno knows a good truthful tutorial about using graphics on form
I've already read everything
1- Do not use a PictureBox to draw but a pannel
2- Do not use a pannel to draw but a picturebox
3- Use a pannel with doublebuffer
4- Do not use Doublebuffer but bufferedgraphics
and so and so ...
So for now I'm using PictureBox because I do not know how to draw on panel
I'm using graphics because I do not know how to use BufferedGraphics
And I don't know how to use doublebuffer
But I want to improve my knowledge but I don't know where is the truth ?
|
|
|
|
|
I doesn't matter too much where you draw, so long as you do it right. Basically, you either want to override the OnPaint method for a control (requires you to make a custom control, which is really easy), or simply use the OnPaint event. In either case you will get a Graphics object in the PaintEventArgs which is what you should use.
Now double buffering, try whatever it is you want without it (ie. Just draw your stuff using the aforementioned Graphics object). Then if you find that your form flickers, you may want to use double buffering. If you can it would be easier to use the DoubleBuffered property, if you can't then you can make up your own. Setting up your own double buffering is easy, simply create a bitmap with the same dimensions as your form/control and do all of your drawing to that, then you just draw the image to the screen in one go, like this:
Bitmap myBuffer = new Bitmap(200,200);
void OnPaint(object sender, PaintEventArgs e)
{
Graphics buffer = Graphics.FromImage(myBuffer);
buffer.Dispose();
e.Graphics.DrawImageUnscaled(myBuffer, 0, 0);
}
And if you want to go all out then check my articles here[^] (which one day I WILL get round to finishing dammit!)
My current favourite word is: Nipple!
-SK Genius
Game Programming articles start - here[ ^]-
|
|
|
|
|
Bitmap myBuffer = new Bitmap(200,200);
void OnPaint(object sender, PaintEventArgs e)
{
Graphics buffer = Graphics.FromImage(myBuffer);
buffer.Dispose();
e.Graphics.DrawImageUnscaled(myBuffer, 0, 0);
}
Hello SK Genius
I'm not sure about this example
1- You create a Grappfics 'buffer' FromImage(myBuffer);
2- Immediately after you dispose that 'buffer'
So what is the purpose of 'buffer' in that example ??
|
|
|
|
|
You do all your drawing onto the new buffer object, and then once you've finished you dispose of it.
My current favourite word is: Nipple!
-SK Genius
Game Programming articles start - here[ ^]-
|
|
|
|
|
IMO it doesn't really matter where you draw on.
If you need to redraw often use double buffering to avoid flickering.
The main thing you should ask yourself, when and how do I redraw?
eg. A while ago, when learning GDI+ on my own, I made the snake game. I used a panel and doublebuffering and it works perfectly. If I disable double buffering, the thing flickers a lot.
When did I redraw: When the snake moved
How did I redraw: I simply removed the last section of the snake and added one section in front instead of redrawing the entire thing.
|
|
|
|
|
Thank you V.
For my purpose I need to display a little portion of a big image and allow to move around the big image with zoom
So
1- I build the big image in memory
2- I take a clip of the big image on a smaller image (using DrawImage with a source rectangle on the big image and a destination rectangle on the small image
3- Then I assign the small image to the PB.Image
So everytime the user wants to move the image I process 2 and 3
My feeling now is that I can be more performant using a pannel instead a PB
And process 2 directly on the pannel surface without having to do 3
Am I right ?
|
|
|
|
|
If you want excellent performance for this, then you may want to use the old GDI which will be much faster, although it does involve P/Invoke and a fair bit more messing around it would definately solve any performance issues.
My current favourite word is: Nipple!
-SK Genius
Game Programming articles start - here[ ^]-
|
|
|
|
|
Thanks a lot SK Genius
I will consider this !
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
