Re: Template Specialization - C / C++ / MFC Discussion Boards

Re: Visual C++ and Microcontroller

Anonymous3-Apr-04 8:03

Anonymous

3-Apr-04 8:03

bump

How to create a Windows XP style button with an image on it?

Paksas31-Mar-04 9:35

Paksas

31-Mar-04 9:35

Recently I've installed Windows XP on my PC, and now I'm trying to upgrade some of my progs to have the "XP looks". I searched MSDN for the solution, found it, used it, and everything was all right, except that the buttons with bitmaps instead of text didn't change the style. They are still displayed as an ordinary semi-3D rectangles, and frankly I don't know what to do.

If anyone knows a solution to my little problem, I'd be very greatful.

Paksas

Re: How to create a Windows XP style button with an image on it?

Gary R. Wheeler31-Mar-04 16:20

Gary R. Wheeler

31-Mar-04 16:20

You need to draw your bitmaps/icons to match the XP look and feel; otherwise, you've just got the old '3-D' look. The 'theme' API stuff doesn't take care of drawing your bitmaps with the anti-aliasing and the special lighting. This article[^] on MSDN talks a little bit about how to create icons. They mention this link[^] in the article.

Software Zen: delete this;

Re: How to create a Windows XP style button with an image on it?

Gary R. Wheeler31-Mar-04 16:22

Gary R. Wheeler

31-Mar-04 16:22

I also found this article[^] that explains the process they expect you to use when creating icons.

Software Zen: delete this;

DialogBox Creation

monrobot1331-Mar-04 8:59

monrobot13

31-Mar-04 8:59

If I have a button that creates a modal dialog (dlg.DoModal ()) should that create the dialog box on the fly using the dialog resource file or does it actually maintain it somewhere in memory and just show it again (if it's not the first call)? For example if I open the dialog, disable some controls, closed the dialog, then open it again should those controls still be disabled? Thanks.

- Aaron

Re: DialogBox Creation

Neville Franks31-Mar-04 9:03

Neville Franks

31-Mar-04 9:03

monrobot13 wrote:
For example if I open the dialog, disable some controls, closed the dialog, then open it again should those controls still be disabled? Thanks.

No. It is re-created from scratch from the .rc file.

Neville Franks, Author of ED for Windows www.getsoft.com and coming soon: Surfulater www.surfulater.com

Template Specialization

Yaron12631-Mar-04 8:45

Yaron126

31-Mar-04 8:45

Hi,
I was wondering if it was possible to change only one member function in a template specifialization
and have the rest the same without having to duplicate the code in the specifialized class?

Thanks.

Re: Template Specialization

antlers31-Mar-04 10:51

antlers

31-Mar-04 10:51

Yes--

Just define the specialization of the function in the header file after the template definition.

Like this:

<br />
template <typename foo> class bar {<br />
public :<br />
int func1() { ... }<br />
int func2() { ... }<br />
...<br />
}<br />
<br />
// Specialization of func2 in bar for class q<br />
template<> bar<q>::func2()<br />
{<br />
...<br />
}<br />

iterate through vector

wadstar31-Mar-04 8:16

wadstar

31-Mar-04 8:16

hi me again, ive been writting code that fills a vector with random numbers from two sources, all even elements are filled from source1 and odd ones from source2...this now works fine after much debuggingmyhead.

ive been trying to to do next part of my function which is more complex, it basically uses a iterator with a const value of 0.002. which is 20millseconds.

this iterator goes to every single element in the array and goes through every element in 0.002 segments..i.e if element value is 3.6 then it goes through it in 1,800 segements. basically splitting up the element into segments,

and it does this to distingusih between numbers from sourceone and sourcetwo because these numbers are usesd elsewhere.. i will paste the code which fills the vector and ive COMMENTEDout the 'new' but it doesnt work imnot sure what else to do.

#include <iostream><br />
#include <vector><br />
#include <stdlib><br />
#include <time><br />
#include <numeric><br />
#include <algorithm><br />
#include "exponentialgenerator.h"<br />
<br />
using namespace std;<br />
<br />
ExponentialGenerator one = 1.41;<br />
ExponentialGenerator two = 1.71;<br />
<br />
double nextNumber = reinterpret_cast<double>(one.generate());<br />
<br />
double nextNumber2 = reinterpret_cast<double>(two.generate());<br />
<br />
int counter = 0;<br />
<br />
void fillVectorToSum(vector<double>& v, double sum)<br />
{<br />
<br />
    int total = 0;<br />
    do {<br />
		if (counter++ % 2){<br />
			v.push_back(nextNumber);<br />
			total += nextNumber;<br />
			nextNumber = one.generate();<br />
			}<br />
		else {<br />
			v.push_back(nextNumber2);<br />
			total += nextNumber2;<br />
			nextNumber2 = two.generate();<br />
			}<br />
<br />
    } while(total+nextNumber+nextNumber2 <= sum);<br />
    if(total < sum)<br />
        v.push_back(sum-total);<br />
}<br />
<br />
/**void goThroughVector(vector<double>& doubleVector, const vector<double>::iterator imMutableIt, double currentElement)<br />
{<br />
	*imMutableIt = 0.002;<br />
<br />
	doubleVector.push_back(1.0); <br />
	doubleVector.push_back(2.0);<br />
<br />
	imMutableIt it = doubleVector.begin();<br />
	<br />
<br />
     double currentElement; <br />
	<br />
		 while (*imMutableIt = 0.002;){<br />
			 if (currentElement = nextNumber)<br />
				return currentElement;<br />
			 else (currentElement = nextNumber2)<br />
				return (currentElement*10);<br />
		 }<br />
	imMutableIt endIt = doubleVector.end();<br />
<br />
<br />
}**/<br />
int main()<br />
{<br />
<br />
    srand((unsigned) time(NULL));<br />
    vector<double> v;<br />
    fillVectorToSum(v, 30);<br />
<br />
    cout << "Number of elements: " << v.size() << "\nTotal: "<br />
         << accumulate(v.begin(), v.end(), 0) << endl;<br />
    copy(v.begin(), v.end(), ostream_iterator<double> (cout,"  "));<br />
	<br />
	<br />
<br />
<br />
<br />
<br />
}

Member of domain

orcun colak31-Mar-04 5:57

orcun colak

31-Mar-04 5:57

I would like to determine if a computer is a member of domain or not.
I tried GetPDC but it seem to be returning the workgroup's name.
Enumerating network is also useless, since it is returning other standalone machine's names.
Any ideas about how to do this?

Orcun Colak

Re: Member of domain

David Crow31-Mar-04 8:03

David Crow

31-Mar-04 8:03

Use NetWkstaGetInfo().

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Re: Member of domain

Robert M Greene31-Mar-04 15:55

Robert M Greene

31-Mar-04 15:55

Try
NetWkstaGetInfo

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/netmgmt/netmgmt/netwkstagetinfo.asp[^]

and NetUserGetInfo

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/netmgmt/netmgmt/netusergetinfo.asp[^]

.............................
There's nothing like the sound of incoming rifle and mortar rounds to cure the blues. No matter how down you are, you take an active and immediate interest in life.

TextOut()

ns31-Mar-04 4:49

31-Mar-04 4:49

In my view class in the LButtonDown()I have

CPaintDC dc;
CRect c;
GetClientRect(&c);

dc.TextOut(c.Width()/2, c.Height()/2," abc");

I dont see the text when I click.

DO I need a different kind of DC? I was actually trying to do DrawIcon but when i didnt see the icon, I thought I'd see if textout worked....neither does..
thanks,
ns

Re: TextOut()

Prakash Nadar31-Mar-04 4:54

Prakash Nadar

31-Mar-04 4:54

Try CClientDC instead of CPaintDC.

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prakashnadar@msn.com

Tip of the day of visual C++ IDE.
"We use it before you do! Visual C++ was developed using Visual C++"

Re: TextOut()

ns31-Mar-04 7:03

31-Mar-04 7:03

Thanks! The textout works. But this doesnt still:

dc.DrawIcon( f, w, hIcon3);

Does this need yet some other special DC? Why wasnt PaintDC suitable for TextOut? How do you choose which type of DC to use?
Thanks again,
ns

Re: TextOut()

grigsoft31-Mar-04 8:29

grigsoft

31-Mar-04 8:29

Imho drawing in mouse message handler is not a good practice. Does your picture should stay after you release button? Try placing other application above yours, and your picture will be lost.

Igor Green
http://www.grigsoft.com/ - files and folders comparison tools

Re: TextOut()

monrobot1331-Mar-04 8:39

monrobot13

31-Mar-04 8:39

ns wrote:
Why wasnt PaintDC suitable for TextOut

It wasn't that the CPaintDC wasn't suitable for a TextOut call it's that it wasn't suitable for where you were using it. CPaintDC should only be used in an OnPaint message handler. The reason behind this, as far as I know, is that it calls some functions (BeginPaint, EndPaint) that set the update region (area you can actually "paint" in) and in your button handler there probably hasn't been any part of your window that's been invalidated, therefore a CPaintDC wouldn't have any valid drawing area.

- Aaron

Re: TextOut()

GflPower31-Mar-04 13:27

GflPower

31-Mar-04 13:27

在这个论坛上必须发英文吗
I'm sorry!

I can't speak english

CDC* dc;

dc = GetDC();

dc->textout();

d

Finding a structures address

Xen3h31-Mar-04 4:27

Xen3h

31-Mar-04 4:27

I use some structures in an app using pointers, basically everytime the program gets updated these addresses change slightly, I usually get told by someone what the address is.

Basically I want to be able to automatically find the address of the structure in the app, but i'm not sure how to do it.. I think i remember someone saying pattern searching or something.

Any help is appreciated. Smile | :)

Re: Finding a structures address

David Crow31-Mar-04 8:06

David Crow

31-Mar-04 8:06

I think I know what you are asking, but your comments make me think otherwise. Have you tried the address-of operator?

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Re: Finding a structures address

Prakash Nadar31-Mar-04 14:44

Prakash Nadar

31-Mar-04 14:44

What do you use the address for ? is it a memeory address or a file offset number ?

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prakashnadar@msn.com

Tip of the day of visual C++ IDE.
"We use it before you do! Visual C++ was developed using Visual C++"

Re: Finding a structures address

gUrM33T31-Mar-04 16:47

gUrM33T

31-Mar-04 16:47

Your question is not clear.

Gurmeet S. Kochar

If you believe in God, it's because of the Devil

Re: Finding a structures address

John R. Shaw31-Mar-04 21:56

John R. Shaw

31-Mar-04 21:56

This question makes no since! What do you mean by "...someone what the address is." Either the code knows what the address is or it doesn't. You might know what the address is at a given run of the program and your debugger might give you the same address every time you rebuild, until you modify the code. But the address may be relitive to the base address of your program or it may be allocated (could be anywhere). You should never need to know the actual address (except maybe when debugging). Pattern searching has nothing to do with finding an address.

/* in C */
struct whatever {...};
struct whatever* pAddr; /* uninitialized pointer/address */
or
myfunct(struct whatever* pAddr)
{
    /* modify stucture whatever */
}

// in C++
struct whaterver {...};
whatever* pAddr; /* uninitialized pointer/address */
or
myfunct(whatever* pAddr)
{
    /* modify stucture whatever */
}

INTP

how to draw the background bmp for the statusbar?

benben31-Mar-04 3:52

benben

31-Mar-04 3:52

Hi:
I want to let the CStatusBar support background bmp(just like CRebar's background).I try to draw the bmp in the onerasebackground() function,but it seems that this way only works in winxp;in win98/me/2000,the background doesn't show correctly.Could you give me any idea or any examplt?

Thanks
Benben

Re: how to draw the background bmp for the statusbar?

Alexander ^M.,1-Apr-04 3:44

Alexander ^M.,

1-Apr-04 3:44

try OnPaint

Don't try it, just do it! Wink | ;-)

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