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Every time you redraw in your Paint event you need to redraw everything. There are at least two ways you could handle this (depending on what you need), one would be to keep a list of all lines that have been drawn and iterate through it on the Paint event redrawing them. The other would be to save the image as a bitmap and just redraw the bitmap every time you paint.
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Thanks for the reply.
I got the answer waht I needed.
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Typically, all your drawing code should be in the Paint event of your control or form. This is because part or all of your form/control can and will need to be redrawn at any time. Even if you don't have an event, like a button click or a mouse move to draw something in. Your application has to maintain a "database" of things that need to be drawn. Your app will modifiy this database using whatever methods you supply and the Paint code should interpret and draw everything in the database it needs to.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Thanks for the reply.
I got the answer waht I needed.
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Hi,
Using C# code is it possible to know the OS type, whether it is 32 bit or 64 bit OS ????
Any help will be great.
Saleem
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Yes, the infact they have different runtime versions for 32 and 64bit.
Else try the good old autoconf check.
return Marshal.SizeOf(typeof(IntPtr));
Will return 4 for 32bit , and 8 for 64bit.
xacc-ide 0.0.99-preview7 now with C#, C, C++, IL, XML, Nemerle, IronPython, Perl, Caml, SML, Ruby, Flex, Yacc, Java, Javascript, Lua, Prolog and Boo highlighting support!
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[C#]
public virtual int GetBytes(
string s,
int charIndex,
int charCount,
byte[] bytes,
int byteIndex
);
If the length of string s is less than the charCount, there will be a error.
How to solve it?
Thanks!
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Check the length first ?
Christian Graus - Microsoft MVP - C++
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Hi all,
can anyone please tell me how to trap the
WM_MOUSEUP message in the Wnd Proc in c#
i want to know the value of WM_MOUSEUP
so that i can check it with the Message value
and do the further processing
Thanks
Pramod
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What's wrong with the mouse up message in C# ?
Christian Graus - Microsoft MVP - C++
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i want to know the value of WM_MOUSEUP
so that i can trap it
and perform some operations
can u tell me the Hex value that WndProc returns
for this msg
Thanks
Pramod
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To find these, open a C++ project, type in the message, and hover the mouse over it.
Christian Graus - Microsoft MVP - C++
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HI,
Thanks for your advice
but Actually there is no any message called WM_MOUSEUP
it's always WM_LBUTTONUP
i found it
Expect your co-operation always
Regards,
Pramod
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I would like to get bitmap screenshot of control. the problem is this control doesn't appear anywhere on form. i don't want to put this control on the form directly, just bitmap screenshot of this control.
can it be done in c#?
thanks
pete
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You can't get a screenshot of anything that is not being drawn.
Christian Graus - Microsoft MVP - C++
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can I force a control draw into a bitmap object instead of screan?
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Hello , I'm new in the development world. Well the reason why for this message is for me to ask what microsoft technology that i can use to develop an OMR application? I would like to try explore such development.
should i use the OCR technology ? or should i try something else ?
Thanks.
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Anonymous wrote: OMR application
Do you mean OCR ?
Anonymous wrote: Hello , I'm new in the development world.
You definately should not be trying to write OCR code right now.
Christian Graus - Microsoft MVP - C++
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hi there ,
Sorry to sound so naive but could u plz tell me what does OCR stand for ?
thanks
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Optical Character Recoginition. It's used to convert an image of a text document into a string of text.
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Anonymous wrote: should i use the OCR technology
Why are you asking if you should be using OCR technology if you don't know what it is?
I think the point of Christians question is "What does OMR stand for?"
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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OCR - refers to Optical Character Recognition
OMR refers to Optical Mark Recognition - the marking of multiple choice question.
I need some guidance on what technology to be used to develop the OMR ?
Should i use OCR technology from microsoft to try it ?
Thanks.
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It really depends on the enviroment, but you are not looking to get characters from images. If I understand you right you are trying to figure out which answer is marked in a multiple choice question. You need a little mix of Image Processing/Computer Vision, but if it is laid out right it shouldn't be to hard.
Assumption: You are using some kind of image capturing device.
Quran
Translation
Intro
Discover
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i like to know abt the implementation of the cryptology project, like
in a client server network, server is sending a message that msg can only be
decrypted by a client who has the key and so other cannot understand it. i need ur help to add such application in my software and what are the new such applications in the cryptology field. pls help
MADE BY SANDY
BAD COMPANY
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Take a look at the System.Security.Cryptography namespace.
---
b { font-weight: normal; }
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