C / C++ / MFC

7-Dec-02 23:09

How can I Invalidate() all views in a MFC MDI app?

Roman Fadeyev8-Dec-02 0:51

Roman Fadeyev

8-Dec-02 0:51

UpdateAllViews() in CDocument. Look at

http://www.codeproject.com/script/comments/forums.asp?forumid=1647&select=358653&df=5#xx358653xx

for details

S O S8-Dec-02 1:26

8-Dec-02 1:26

This doesn't even repaint the current view...

S O S8-Dec-02 1:49

8-Dec-02 1:49

OK, nevermind that, that was my bad.
But what I need to do is repaint all views of all documents

Jim A. Johnson8-Dec-02 7:26

Jim A. Johnson

8-Dec-02 7:26

AfxGetMainWnd()->Invalidate() is one way.

S O S8-Dec-02 7:29

8-Dec-02 7:29

I tried, but that didn't seem to update any windows? Hmm maybe I did it a bit wrong.. I'll see...
Nope, doesn't effect the child windows...

How to judge a handle?

xi9047-Dec-02 23:09

xi904

7-Dec-02 23:09

Hi,

I have a windows handle which is returned by third party lib, this handle sometimes is valid, sometimes isn't. I want to know whether there is method or function to judge the validity of a handle?

Thanks,
Jeff Xi

Roman Fadeyev8-Dec-02 0:54

Roman Fadeyev

8-Dec-02 0:54

GetHandleInformation()

Paul M Watt8-Dec-02 6:22

Paul M Watt

8-Dec-02 6:22

Roman Fadeyev wrote:
GetHandleInformation()

Beware that function only works in Windows NT, it is not supported for Win9x OSs

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Paul M Watt8-Dec-02 6:24

Paul M Watt

8-Dec-02 6:24

There are ways, but it depends on the type of handle that you are dealing with.

Do you have a window handle, a GDI handle, a file handle, or something else?

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Detect the path where is running an application VC++

Joe Woodbury9-Dec-02 19:33

Joe Woodbury

9-Dec-02 19:33

If it's a handle to a window, you can call IsWindow().

For other handles and Win98 compatibility, you could use DuplicateHandle() and check the error returns (don't forget to close the duplicated handle if successful.)

nencini7-Dec-02 20:15

nencini

7-Dec-02 20:15

I'd like to detect the folder (path) where a my application is running
and put the data in a string. - Can somebody give me some suggestion
(without using the system() funcion)? - Thanks - giovanni.

Re: Detect the path where is running an application VC++

geo_m7-Dec-02 20:24

geo_m

7-Dec-02 20:24

If you mean the path where your .exe is located, you can use a function:
GetModuleFileName(...), where you put your exe module instance handle and retrieve the whole path including the exe module ("c:\windows\notepad.exe"). Then you have to simply strip the exe name and voila you have path.

If you mean the current directory for process, use GetCurrentDirectory()

Re: Detect the path where is running an application VC++

Roman Fadeyev7-Dec-02 23:59

Roman Fadeyev

7-Dec-02 23:59

geo_m is completely right. But I would add little remark: you can pass NULL to GetModuleFileName() to retrieve your app path. It's easier to use. Especially it is important to pass NULL when you get AppPath from DLL.

How to cut filedir from path? All functions for manipulating with filenames are placed in shlwapi.h. Their names are beginning from "Path" word. For example: PathFindFileName (Searches a path for a file name). Also you can use C++ function _splitpath

Re: Detect the path where is running an application VC++

Gaul8-Dec-02 3:28

Gaul

8-Dec-02 3:28

An example:

char szDrive[_MAX_DRIVE];
char szDir[_MAX_DIR];
char szFileName[_MAX_FNAME];
char szExt[_MAX_EXT];
char szBuffer[_MAX_PATH];

// get path of executable
GetModuleFileName(NULL, szBuffer, _MAX_PATH);

// split into parts, to get the Path
const char* pFilePath = szBuffer;
_splitpath(pFilePath, szDrive, szDir, szFileName, szExt);

CString strPath;
strPath.Format("%s%s", szDrive, szDir);
TRACE("File Path is %s\n", strPath);

Gaulles

Re: Detect the path where is running an application VC++

Ravi Bhavnani8-Dec-02 12:40

Ravi Bhavnani

8-Dec-02 12:40

/*
 *  Gets the name of the application's directory.
 */
void getAppDir
  (CString& strAppDir)    // buffer to receive application's directory
{
  char* pSlash = NULL;          // location of last backslash in filespec
  char szFilespec [_MAX_PATH];  // filespec
 
  // Get name of .exe file sans name
  ::GetModuleFileName (AfxGetInstanceHandle(), szFilespec, _MAX_PATH);
  pSlash = strrchr (szFilespec, '\\');
  ASSERT (pSlash != NULL);
  pSlash++;
  *pSlash = '\0';
  strAppDir = szFilespec;
}

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Re: Detect the path where is running an application VC++

pranavamhari8-Dec-02 14:39

pranavamhari

8-Dec-02 14:39

use GetModuleFileName()

Hari Krishnan

Big Question

abarker047-Dec-02 17:45

abarker04

7-Dec-02 17:45

I came across a math problem that i have no clue how to write a program for it.
It says to arrange the numbers 1 through 30 so that the sum of any 2 consecutive integers is a perfect square (i.e. 4,16,25,36,49...). I found what i think is a small pattern
15 1 24
14 2 23
13 3 22
12 4 21
11 5 20
30 6 19
29 7 18
28 8 17
27 9 16
26 10 25
but anyways, i need to know how to write a prog. that will either arrange these sets of numbers or arrange 1-30 the right way. I would really appreciate help on this one
thanks

aaron barker

zarzor7-Dec-02 18:16

zarzor

7-Dec-02 18:16

Arranging as circle or floating from the ends?

RJS

abarker048-Dec-02 4:56

abarker04

8-Dec-02 4:56

well, im sort of a newb. basically, just have the numbers be arranged any way possible to make any 2 integers added together a perfect square.
like,
15,1,24,12,4,21
i dont really know how to explain it anymore

Christian Graus8-Dec-02 10:54

Christian Graus

8-Dec-02 10:54

When you say *need* to know, is this something you have personal need for, or is it your homework ?

Think about what you want the program to do. How would you do it manually ?

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

zarzor8-Dec-02 11:58

zarzor

8-Dec-02 11:58

Here's what you asked for, assuming that you have Hexium or 80686 processor Roll eyes | :rolleyes:

(searching within 30! (i.e 30*29*28..*1) elements):

#include <stdio.h>

int Check(int,int);
main()
 {
  for(int j1=1;j1<31;j1++)
   for(int j2=1;j2<31;j2++){if(j2==j1)continue;
    for(int j3=1;j3<31;j3++){if(j3==j2 || j3==j1)continue;
     for(int j4=1;j4<31;j4++){if(j4==j3 || j4==j2 || j4==j1)continue;
      for(int j5=1;j5<31;j5++){if(j5==j4 || j5==j3 || j5==j2 || j5==j1)continue;
       for(int j6=1;j6<31;j6++){if(j6==j5 || j6==j4 || j6==j3 || j6==j2 || j6==j1)continue;
        for(int j7=1;j7<31;j7++){if(j7==j6 || j7==j5 || j7==j4 || j7==j3 || j7==j2 || j7==j1)continue;
         for(int j8=1;j8<31;j8++){if(j8==j7 || j8==j6 || j8==j5 || j8==j4 || j8==j3 || j8==j2 || j8==j1)continue;
          for(int j9=1;j9<31;j9++){if(j9==j8 || j9==j7 || j9==j6 || j9==j5 || j9==j4 || j9==j3 || j9==j2 || j9==j1)continue;
           for(int j10=1;j10<31;j10++){if(j10==j9 || j10==j8 || j10==j7 || j10==j6 || j10==j5 || j10==j4 || j10==j3 || j10==j2 || j10==j1)continue;
            for(int j11=1;j11<31;j11++){if(j11==j10 || j11==j9 || j11==j8 || j11==j7 || j11==j6 || j11==j5 || j11==j4 || j11==j3 || j11==j2 || j11==j1)continue;
             for(int j12=1;j12<31;j12++){if(j12==j11 || j12==j10 || j12==j9 || j12==j8 || j12==j7 || j12==j6 || j12==j5 || j12==j4 || j12==j3 || j12==j2 || j12==j1)continue;
              for(int j13=1;j13<31;j13++){if(j13==j12 || j13==j11 || j13==j10 || j13==j9 || j13==j8 || j13==j7 || j13==j6 || j13==j5 || j13==j4 || j13==j3 || j13==j2 || j13==j1)continue;
               for(int j14=1;j14<31;j14++){if(j14==j13 || j14==j12 || j14==j11 || j14==j10 || j14==j9 || j14==j8 || j14==j7 || j14==j6 || j14==j5 || j14==j4 || j14==j3 || j14==j2 || j14==j1)continue;
                for(int j15=1;j15<31;j15++){if(j15==j14 || j15==j13 || j15==j12 || j15==j11 || j15==j10 || j15==j9 || j15==j8 || j15==j7 || j15==j6 || j15==j5 || j15==j4 || j15==j3 || j15==j2 || j15==j1)continue;
                 for(int j16=1;j16<31;j16++){if(j16==j15 || j16==j14 || j16==j13 || j16==j12 || j16==j11 || j16==j10 || j16==j9 || j16==j8 || j16==j7 || j16==j6 || j16==j5 || j16==j4 || j16==j3 || j16==j2 || j16==j1)continue;
                  for(int j17=1;j17<31;j17++){if(j17==j16 || j17==j15 || j17==j14 || j17==j13 || j17==j12 || j17==j11 || j17==j10 || j17==j9 || j17==j8 || j17==j7 || j17==j6 || j17==j5 || j17==j4 || j17==j3 || j17==j2 || j17==j1)continue;
                   for(int j18=1;j18<31;j18++){if(j18==j17 || j18==j16 || j18==j15 || j18==j14 || j18==j13 || j18==j12 || j18==j11 || j18==j10 || j18==j9 || j18==j8 || j18==j7 || j18==j6 || j18==j5 || j18==j4 || j18==j3 || j18==j2 || j18==j1)continue;
                    for(int j19=1;j19<31;j19++){if(j19==j18 || j19==j17 || j19==j16 || j19==j15 || j19==j14 || j19==j13 || j19==j12 || j19==j11 || j19==j10 || j19==j9 || j19==j8 || j19==j7 || j19==j6 || j19==j5 || j19==j4 || j19==j3 || j19==j2 || j19==j1)continue;
                     for(int j20=1;j20<31;j20++){if(j20==j19 || j20==j18 || j20==j17 || j20==j16 || j20==j15 || j20==j14 || j20==j13 || j20==j12 || j20==j11 || j20==j10 || j20==j9 || j20==j8 || j20==j7 || j20==j6 || j20==j5 || j20==j4 || j20==j3 || j20==j2 || j20==j1)continue;
                      for(int j21=1;j21<31;j21++){if(j21==j20 || j21==j19 || j21==j18 || j21==j17 || j21==j16 || j21==j15 || j21==j14 || j21==j13 || j21==j12 || j21==j11 || j21==j10 || j21==j9 || j21==j8 || j21==j7 || j21==j6 || j21==j5 || j21==j4 || j21==j3 || j21==j2 || j21==j1)continue;
                       for(int j22=1;j22<31;j22++){if(j22==j21 || j22==j20 || j22==j19 || j22==j18 || j22==j17 || j22==j16 || j22==j15 || j22==j14 || j22==j13 || j22==j12 || j22==j11 || j22==j10 || j22==j9 || j22==j8 || j22==j7 || j22==j6 || j22==j5 || j22==j4 || j22==j3 || j22==j2 || j22==j1)continue;
                        for(int j23=1;j23<31;j23++){if(j23==j22 || j23==j21 || j23==j20 || j23==j19 || j23==j18 || j23==j17 || j23==j16 || j23==j15 || j23==j14 || j23==j13 || j23==j12 || j23==j11 || j23==j10 || j23==j9 || j23==j8 || j23==j7 || j23==j6 || j23==j5 || j23==j4 || j23==j3 || j23==j2 || j23==j1)continue;
                         for(int j24=1;j24<31;j24++){if(j24==j23 || j24==j22 || j24==j21 || j24==j20 || j24==j19 || j24==j18 || j24==j17 || j24==j16 || j24==j15 || j24==j14 || j24==j13 || j24==j12 || j24==j11 || j24==j10 || j24==j9 || j24==j8 || j24==j7 || j24==j6 || j24==j5 || j24==j4 || j24==j3 || j24==j2 || j24==j1)continue;
                          for(int j25=1;j25<31;j25++){if(j25==j24 || j25==j23 || j25==j22 || j25==j21 || j25==j20 || j25==j19 || j25==j18 || j25==j17 || j25==j16 || j25==j15 || j25==j14 || j25==j13 || j25==j12 || j25==j11 || j25==j10 || j25==j9 || j25==j8 || j25==j7 || j25==j6 || j25==j5 || j25==j4 || j25==j3 || j25==j2 || j25==j1)continue;
                           for(int j26=1;j26<31;j26++){if(j26==j25 || j26==j24 || j26==j23 || j26==j22 || j26==j21 || j26==j20 || j26==j19 || j26==j18 || j26==j17 || j26==j16 || j26==j15 || j26==j14 || j26==j13 || j26==j12 || j26==j11 || j26==j10 || j26==j9 || j26==j8 || j26==j7 || j26==j6 || j26==j5 || j26==j4 || j26==j3 || j26==j2 || j26==j1)continue;
                            for(int j27=1;j27<31;j27++){if(j27==j26 || j27==j25 || j27==j24 || j27==j23 || j27==j22 || j27==j21 || j27==j20 || j27==j19 || j27==j18 || j27==j17 || j27==j16 || j27==j15 || j27==j14 || j27==j13 || j27==j12 || j27==j11 || j27==j10 || j27==j9 || j27==j8 || j27==j7 || j27==j6 || j27==j5 || j27==j4 || j27==j3 || j27==j2 || j27==j1)continue;
                             for(int j28=1;j28<31;j28++){if(j28==j27 || j28==j26 || j28==j25 || j28==j24 || j28==j23 || j28==j22 || j28==j21 || j28==j20 || j28==j19 || j28==j18 || j28==j17 || j28==j16 || j28==j15 || j28==j14 || j28==j13 || j28==j12 || j28==j11 || j28==j10 || j28==j9 || j28==j8 || j28==j7 || j28==j6 || j28==j5 || j28==j4 || j28==j3 || j28==j2 || j28==j1)continue;
                              for(int j29=1;j29<31;j29++){if(j29==j28 || j29==j27 || j29==j26 || j29==j25 || j29==j24 || j29==j23 || j29==j22 || j29==j21 || j29==j20 || j29==j19 || j29==j18 || j29==j17 || j29==j16 || j29==j15 || j29==j14 || j29==j13 || j29==j12 || j29==j11 || j29==j10 || j29==j9 || j29==j8 || j29==j7 || j29==j6 || j29==j5 || j29==j4 || j29==j3 || j29==j2 || j29==j1)continue;
                               for(int j30=1;j30<31;j30++){if(j30==j29 || j30==j28 || j30==j27 || j30==j26 || j30==j25 || j30==j24 || j30==j23 || j30==j22 || j30==j21 || j30==j20 || j30==j19 || j30==j18 || j30==j17 || j30==j16 || j30==j15 || j30==j14 || j30==j13 || j30==j12 || j30==j11 || j30==j10 || j30==j9 || j30==j8 || j30==j7 || j30==j6 || j30==j5 || j30==j4 || j30==j3 || j30==j2 || j30==j1)continue;
                                if(Check(j1,j2)&&Check(j2,j3)&&Check(j3,j4)&&
                                   Check(j4,j5)&&Check(j5,j6)&&Check(j6,j7)&&
                                   Check(j7,j8)&&Check(j8,j9)&&Check(j9,j10)&&
                                   Check(j10,j11)&&Check(j11,j12)&&Check(j12,j13)&&
                                   Check(j13,j14)&&Check(j14,j15)&&Check(j15,j16)&&
                                   Check(j16,j17)&&Check(j17,j18)&&Check(j18,j19)&&
                                   Check(j19,j20)&&Check(j20,j21)&&Check(j21,j22)&&
                                   Check(j22,j23)&&Check(j23,j24)&&Check(j24,j25)&&
                                   Check(j25,j26)&&Check(j26,j27)&&Check(j27,j28)&&
                                   Check(j28,j29)&&Check(j29,j30)){
                                    printf("%d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d ",
                                      j1,j2,j3,j4,j5,j6,j7,j8,j9,j10,j11,j12,j13,j14,j15,j16,j17,j18,j19,j20,j21,j22,j23,j24,j25,j26,j27,j28,j29,j30);
                                      getchar();
                                      return 0;}
   }}}}}}}}}}}}}}}}}}}}}}}}}}}}}

  printf("\nNo solution!.");
  getchar();
  return 0;
 }
int Check(int x,int y)
 {
  int c=x+y;
  if(c==4 || c==9 || c==16 || c==25 || c==36 || c==49) return 1;
  else return 0;
 }

Zarzor

ZARZOR13

jhwurmbach8-Dec-02 21:51

jhwurmbach

8-Dec-02 21:51

You are a bad guy;)

"My opinions may have changed, but not the fact that I am right."
Found in the sig of Herbert Kaminski