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Conversion functions provide a way to explicitly convert an object of a type to another type.
Zealous_Me wrote: Why it is created with overloading keyword "operator" ?
Probably because conversions are done using a "casting operator" - parenthesis "()"
Zealous_Me wrote: Why it does not have a return type, while with the "operator" keywork we have to have mention a return type ????
This is a matter of the chosen syntax. Bjarne would know best, but I imagine the syntax is this way to differentiate the
conversion function from a function call operator.
For example, the syntax could have been chosen to be
type operator()
but a function call operator looks like this:
type operator()([optional arguments])
Having the syntax for a conversion function like this:
operator type()
seems more clear to me that it's a "cast operator" to "type".
As led mike suggested, reading is good -Operator Overloading[^]
Mark
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/coffee.gif)
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Mark Salsbery wrote: As led mike suggested, reading is good
Apparently my answer was not good 
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It wasn't you - apparently "Robert Lafore"'s answers aren't good 
Mark Salsbery
Microsoft MVP - Visual C++
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Hello Everyone,
I want to add a button in a application.Application reads images and I want this button to do labeling for the image being read.
Can anyone please give me some idea like how to start with?Actually,I am a beginner in VC++.I would appreciate any kind of help.Thanking You in advance.
Regards,
Ravan
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open your resource editor, drag n' drop the button control, and there you go...
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raavn wrote: I want to add a button in a application.
So just add the button control like you would any other control.
raavn wrote: ...I want this button to do labeling for the image being read.
Which means what exactly?
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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Hi david,
Thanx a lot for replying.
Actually, I have already a software that loads DT files and after that these files are segmented for tumor and ventricles.What I wanna to do is add a button to this existing software.I wanna this button to do labeling on that medical image.For example,I wawant to write vetricles when ventricles appear on slice.Actually, this software was developed by some other person.I jus wanna to add this feature to this existing software.
Can u plz give me guidelines to implement this idea?I have very little knowledge of VC++.
Thanks & Regards,
Ravan
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raavn wrote: What I wanna to do is add a button to this existing software.
Do you have the source code?
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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Yeah,I hv the source code.
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Ok, so just add the button control like you would any other control. Open the resource editor, double-click the dialog template you want to modify, click on the button in the control toolbox and drag it onto the dialog template.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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hi david,
thnx 4 help....bt i need more help...i hv done wat u said 2 do...next i wnna dat wen i il click dis button,den a cusor shud b displayed on d image so dat i can write text on d image....dis s/w is already hving a SAVE button...so aftr writing wen i il click save button,it shud save dat text....
Can u plz give me some idea like how 2 start wid?I wud really appreciate dat..
Thnks & Regards
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I stopped reading after the first sentence. Please lose the SMS-speak and use proper English.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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So what are you needing help with? Responding to a button click? Writing text onto an image? Saving text? Be specific.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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I need help with writing text onto a image..
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raavn wrote: I need help with writing text onto a image..
Something like this.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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actually i have the code to load a image....so i just wanna a code that could add text onto that image....like if say i load a image called map and i want to write the names of the countries on it....
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raavn wrote: ...write the names...
Via the keyboard or code?
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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Then I'd imagine you would create an edit control at runtime. One of the arguments passed to CreateWindow() is the x/y coordinate of the control. I assume this would be near to where you'd want the "label" to be.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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Can you please elaborate it??
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First, what sort of indicator are you wanting for knowing when to add the label to the image? For example, are you going to be right-clicking on the image and then bringing up a context menu (with Add Label as one of the choices)?
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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actually i wanted to add a button for this purpose....so that when i will click this button,it will add label onto the image..
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raavn wrote: ...when i will click this button,it will add label onto the image..
So which is it, code or keyboard? 
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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