Re: How to get the size and position of MaximizeBox ,MinimizeBox? - C / C++ / MFC Discussion Boards

DaveE9th28-Jun-03 21:11

28-Jun-03 21:11

I have run into the problem of not knowing which headers files I need to declare with functions I want to use. Is there a way in VC++ to determine which header goes with which function? Also, I would like to know what the hundreds of different standard windows functions do, is there a book or a website that could help me learn?

Thanks

Re: headers/functions

Abbas_Riazi29-Jun-03 4:08

Abbas_Riazi

29-Jun-03 4:08

If you know function name and want it's header file, simply press F1 (help) when you are on function!
MSDN will show you detail of function and it's header file and library.

A. Riazi

scope guard

N Blumhardt28-Jun-03 18:56

N Blumhardt

28-Jun-03 18:56

Hi all, does anyone know where I can download the source for the ScopeGuard classes from Andrei Alexandrescu's CUJ article? The code is no longer with the article... does anyone have a copy they could send me?

Thanks Smile | :)

Re: scope guard

Neville Franks29-Jun-03 1:12

Neville Franks

29-Jun-03 1:12

Have you looked in the Code Archive.

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

Re: scope guard

Taka Muraoka29-Jun-03 20:38

Taka Muraoka

29-Jun-03 20:38

The url in the article works OK for me:

ftp://ftp.cuj.com/pub/2000/1812/alexandr.zip[^]

Email me if you still can't get it and I'll send you a copy.

Always code as if the person who ends up maintaining your code will be a violent psychopath who knows where you live.

Awasu 1.0.5 (beta)[^]: A free RSS reader with support for Code Project.

How to get the size and position of MaximizeBox ,MinimizeBox?

scgy94_jiang28-Jun-03 16:30

scgy94_jiang

28-Jun-03 16:30

In an application, i paint the caption bar myself. And i come across one problem, how to get the size and position of Maximizebox ,Minimizebox? So i can leave them alone,just paint the spare area. Rose | [Rose]

Re: How to get the size and position of MaximizeBox ,MinimizeBox?

Ravi Bhavnani28-Jun-03 17:16

Ravi Bhavnani

28-Jun-03 17:16

Call GetSystemMetrics() with SM_CXMENUSIZE and SM_CYMENUSIZE to get the width and height of these items. You can compute their position from the window's dimensions. You'll need to use SM_CXBORDER and SM_CYBORDER (i.e. passed as args to GetSystemMetrics()) in your calculations.

/ravi

Let's put "civil" back in "civilization"
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Re: How to get the size and position of MaximizeBox ,MinimizeBox?

scgy94_jiang28-Jun-03 17:28

scgy94_jiang

28-Jun-03 17:28

i feel boring that in XP, the width and height of SM_CXMENUSIZE && SM_CYMENUSIZE is 18, but obviously the maximizebox and minimizebox are larger.

Here are some values got from GetSystemMetrics:

2000 ____________ XP
SM_CXICON 32 ____________ 32
SM_CYICON 32 ____________ 32
SM_CYMENUSIZE 18 ____________ 18
SM_CXSIZE 18 ____________ 25
SM_CYSIZE 18 ____________ 25
SM_CXSMICON 16 ____________ 16
SM_CXSMSIZE 12 ____________ 27
SM_CYCAPTION 19 ____________ 26
SM_CYSMCAPTION 16 ____________ 18

Any way to keep console.exe open?

DaveE9th28-Jun-03 13:52

DaveE9th

28-Jun-03 13:52

I've tried several ideas and so far nothing seems to work. I'm simply trying to add some code to keep a console 32 program open. This is the release version of the program being opened from Windows Explorer. I've tried _getch(); and even a while(!getch());

ANy ideas? Cool | :cool:

tanks

Re: Any way to keep console.exe open?

Toni7828-Jun-03 14:21

Toni78

28-Jun-03 14:21

_getch() always worked for me. You must be doing something wrong. Posting some code that "doesn't work" would help. (is my depth of perception increasing?)

// Afterall, I realized that even my comment lines have bugs

When one cannot invent, one must at least improve (in bed).-My latest fortune cookie

Re: Any way to keep console.exe open?

peterchen28-Jun-03 14:32

peterchen

28-Jun-03 14:32

getch() usually does the trick. however, if there are any keys in the queue, it will see them, so you should use

while (kbhit()) getch(); // empty keyboard buffer
getch();

"Der Geist des Kriegers ist erwacht / Ich hab die Macht" StS

sighist | Agile Programming | doxygen

Re: Any way to keep console.exe open?

DaveE9th28-Jun-03 14:58

DaveE9th

28-Jun-03 14:58

I don't think so Toni...

Thanks Pete,will try

Hmmm | :|

Re: Any way to keep console.exe open?

Peter Weyzen28-Jun-03 17:18

Peter Weyzen

28-Jun-03 17:18

One important question: What happens when you are in the debugger? Does it make it to the _getch() statement?

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br />
Peter Weyzen<br />
Staff Engineer<br />
Santa Cruz Networks

Re: Any way to keep console.exe open?

Peter Weyzen29-Jun-03 9:24

Peter Weyzen

29-Jun-03 9:24

Here's a link to the MSDN site that answers all your questions about use of getch():

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_crt__getch.2c_._getche.asp[^]

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br />
Peter Weyzen<br />
Staff Engineer<br />
Santa Cruz Networks

Re: Any way to keep console.exe open?

DaveE9th30-Jun-03 9:27

DaveE9th

30-Jun-03 9:27

Thanks Pete,

I finally got it to work.

Big Grin | :-D

Re: Any way to keep console.exe open?

Toni7829-Jun-03 14:38

Toni78

29-Jun-03 14:38

DaveE9th wrote:
I don't think so Toni...

Well, I am not the one having troubles with a getch() statement, that even the kids in my neighborhood know how to use it by now. You have posted this question so many times that one would think that you are dealing with the problem of the century. Read some books first.

// Afterall, I realized that even my comment lines have bugs

When one cannot invent, one must at least improve (in bed).-My latest fortune cookie

Maximum function

Sunnygirl28-Jun-03 12:27

Sunnygirl

28-Jun-03 12:27

hello @all,

i need a something, that find the maximum of different int or double values.

for example:
max{1, 2.5, 2}=2.5

can anybody help me?
thank you very much.
sunny

Re: Maximum function

Melekor28-Jun-03 13:43

Melekor

28-Jun-03 13:43

use a macro like
#define max(a, b) (a > b ? a : b)
or if you need a variable ammount of arguments, create a function that uses va_list, like this one (MSDN example)

Re: Maximum function

peterchen28-Jun-03 14:29

peterchen

28-Jun-03 14:29

just two notes
a) you shouldn't use a macro if it can be expressed in the language - i.e.
template <typename T> inline T max(T a, T b) { return (a > b) ? a : b; } should do it without side effect problems, correct name scoping
b) if you need to use a macro, use braces around each argument,
#define max(a,b) ((a) > (b) ? (a) : (b))

"Der Geist des Kriegers ist erwacht / Ich hab die Macht" StS

sighist | Agile Programming | doxygen

Re: Maximum function

majian40528-Jun-03 17:22

majian405

28-Jun-03 17:22

Use macro is not a good choice.You can find this in <<effective c++="">> Item 1 :

#define max(a,b) ((a) > (b) ? (a) : (b))
This little number has so many drawbacks, just thinking about them is painful. You're better off playing in the freeway during rush hour.

Whenever you write a macro like this, you have to remember to parenthesize all the arguments when you write the macro body; otherwise you can run into trouble when somebody calls the macro with an expression. But even if you get that right, look at the weird things that can happen:

int a = 5, b = 0;
max(++a, b); // a is incremented twice
max(++a, b+10); // a is incremented once
Here, what happens to a inside max depends on what it is being compared with!

Re: Maximum function

peterchen29-Jun-03 1:03

peterchen

29-Jun-03 1:03

I know of that -
That's what's commonly called "side effects" (I was referring to in my post) - that's why (mostly9 the first instruction never to use macros unless you cannot do without Wink | ;)

"Der Geist des Kriegers ist erwacht / Ich hab die Macht" StS

sighist | Agile Programming | doxygen

Re: Maximum function

Toni7828-Jun-03 14:04

Toni78

28-Jun-03 14:04

I really haven't tested this code to check for errors but this is the general idea on how to get the maximum number:

int nNoNumbers = SOME_VALUE;
int *piArrayNums = new int[ nNoNumbers ];
...
// Initialize piArrayNums here
...
// Assume that the largest number is the first
// in the array.
int iMax = piArrayNums[ 0 ];
for( i = 0; i < nNoNumbers; i++ )
{
    // If the assumption was wrong correct it
    if( piArrayNums[ i ] > iMax )
    {
         iMax = piArrayNums[ i ];
    } // end if
} // end for i
// Don't forget to free the memory allocated for the array.
// In case you use new.

The same thing can be done with doubles.

// Afterall, I realized that even my comment lines have bugs

When one cannot invent, one must at least improve (in bed).-My latest fortune cookie

Re: Maximum function

ZoogieZork28-Jun-03 14:46

ZoogieZork

28-Jun-03 14:46

The STL provides a std::max_element template function that operates on a collection of any type of comparable value.

max_element from SGI's STL reference

max_element code sample from MSDN

- Mike

Dynamic Matrix!

Sunnygirl28-Jun-03 10:54

Sunnygirl

28-Jun-03 10:54

hello @all,

i need a dynamic two-dimensional matrix. how can i do this?

thank you very much!
sunny

Re: Dynamic Matrix!

Neville Franks28-Jun-03 11:48

Neville Franks

28-Jun-03 11:48

You can use malloc and realloc to do it all yourself, or use a STL vector or vectors.

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

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