C / C++ / MFC Discussion Boards

munafmohd18-Oct-02 0:53

18-Oct-02 0:53

Hi Iam using the GridCtrl in my code.The Grid is allowing to enter infinite number of charecters in the cells.I want to restrict the cell characters by some 12 or 13.That is user should not enter more than 12 charecters in a cell.
Please help me.

munafmohamed

Re: MFCGridCtrl

Iain Clarke, Warrior Programmer18-Oct-02 6:40

Iain Clarke, Warrior Programmer

18-Oct-02 6:40

This is from memory, so you'll have to check on the implementation details.
When a cell is being edited, it created an "InPlaceEdit" control. This is an
edit box which is subclassed to capture the WM_KILLFOCUS message.

When this is created, the grid control sends you a notification. You can get
the handle / CWnd * of the edit box and send it a EM_LIMITTEXT message.

I hope this helps,

Iain.

Scintilla and lex/yacc/flex/bison

Patje18-Oct-02 0:48

Patje

18-Oct-02 0:48

I'm currently trying to use the Scintilla (www.scintilla.org[^]) control in one of our applications. That's rather simple and works.
Problem is that I want to add a colorizer (for our macro language) to Scintilla. It seems like I have to write my own lexer module specifically for Scintilla, which is a pitty since I already have a lexical analyser written in lex/flex, that works together with our parser, written in yacc/bison.
I would like to reuse our lex/flex lexical analyser in the Scintilla lexer.
Anybody done that already ? Or anyone ideas ?
Thanks.

Enjoy life, this is not a rehearsal !!!

Getting application ICON from process

alex.barylski18-Oct-02 0:06

alex.barylski

18-Oct-02 0:06

Is this possible...?

Spy++ has a neat feature where you drag the bullseye over a window and it returns it's info like class info and process ID and thread and such...

I assume I can get the process ID using GetWindowThreadProcessID(), but once I have a window or application process how can I get the module's ICON...???

Thanx in advance!

Cheers!

"An expert is someone who has made all the mistakes in his or her field" - Niels Bohr

Re: Getting application ICON from process

alex.barylski18-Oct-02 0:20

alex.barylski

18-Oct-02 0:20

hIcon of the WNDCLASS....?

that would work yeah...?

"An expert is someone who has made all the mistakes in his or her field" - Niels Bohr

Re: Getting application ICON from process

Dominik Reichl18-Oct-02 2:44

Dominik Reichl

18-Oct-02 2:44

Have a look at the function

HICON ExtractIcon(
  HINSTANCE hInst,          // instance handle
  LPCTSTR lpszExeFileName,  // filename of file with icon
  UINT nIconIndex           // index of icon to extract
);

hInst should be AfxGetInstanceHandle(); and lpszExeFileName the path to the executable of the process you want to get the icon from. There is a member "szExeFile" in the PROCESSENTRY32 struct, so this should not be a problem. To get the standard icon, set nIconIndex = 0.

Big Grin | :-D

-Dominik

How figure out shared folder accessing?

David M.17-Oct-02 23:52

David M.

17-Oct-02 23:52

How can I programmatically figure out that my shared folders are accessed from some user? Is there any event which can trigger me that, and how?
Thank you in advance.

command line

udayGovekar17-Oct-02 23:45

udayGovekar

17-Oct-02 23:45

Hi All,

consider Test.exe which is GUI based,

now in command line

\\directory\test.exe it invokes Test.exe, if user types

\\directory\test.exe help ,particular help should be displayed simillar to c:\help a list of commands with description is displayed

can anyone explain me on how to do this

Thanks
Uday

Re: command line

alex.barylski18-Oct-02 0:11

alex.barylski

18-Oct-02 0:11

Parse the command line parameter of WinMain(), determine if the commandline included help, then print the stuff to screen.

console apps I guess use main() so you have to work with argv and argc

argv is an array (if i remember correctly) of each paramter and argc is a count of the number of array elements...

so argv[0] = test.exe (module name)
and argv[1] would contain the text string help

simple as that really

"An expert is someone who has made all the mistakes in his or her field" - Niels Bohr

Re: command line

udayGovekar18-Oct-02 0:23

udayGovekar

18-Oct-02 0:23

I need to use WriteConsole for that I have to get the Handle
(Handle to the console screen buffer to be written to. The handle must have GENERIC_WRITE access. )

How to get this Handle??

I used ,
HANDLE hnd =GetStdHandle(STD_OUTPUT_HANDLE); buts its not working and also I used GetLastError() its returning 0 which means program executed correctly

So ??

Re: command line

Dominik Reichl18-Oct-02 2:36

Dominik Reichl

18-Oct-02 2:36

Are you using WinMain(...) or main(...). If you use WinMain, you have to call the function

AllocConsole();

before calling GetStdHandle(...);

Big Grin | :-D

-Dominik

redefination

stevenson17-Oct-02 23:30

stevenson

17-Oct-02 23:30

Hi,

In DataTypes.h, I wrote this

typedef struct _DATASTRUCT
      {
         LPCTSTR ID;
         double  value;
         SYSTEMTIME time;
       }DATASTRUCT,*LPDATASTRUT;

and include this header in several classes *.h or *.cpp files,the compiler hint to me that redefination has happened.

Then how to fix this problem?

Extreme programming. Do the No.1

Re: redefination

Daniel Turini17-Oct-02 23:45

Daniel Turini

17-Oct-02 23:45

Put a

#pragma once

In your .h first line

My latest articles:
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Re: redefination

Joaquín M López Muñoz17-Oct-02 23:48

Joaquín M López Muñoz

17-Oct-02 23:48

Are you protecting your file .h>/code> against multiple inclusion? (with <code>#ifndef DATA_TYPE_Hs and stuff, you know.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: redefination

Alexandru Savescu17-Oct-02 23:50

Alexandru Savescu

17-Oct-02 23:50

In data types.h add something like this:

#if !defined DATATYPES
#define DATATYPES
.... // declarations go here
#end if 

Best regards,
Alexandru Savescu

Storage Card

tem tem17-Oct-02 23:09

tem tem

17-Oct-02 23:09

Hii all ,

how I can get Information about the space available and the total space in the memory of a Pocket PC or Its aditional card !!

thanks alot

System font..

Neha17-Oct-02 23:05

Neha

17-Oct-02 23:05

How to retreive the system font?

Re: System font..

alex.barylski17-Oct-02 23:32

alex.barylski

17-Oct-02 23:32

GetStockObject(SYSTEM_FONT)

"An expert is someone who has made all the mistakes in his or her field" - Niels Bohr

CImage problem

joblemar17-Oct-02 22:13

joblemar

17-Oct-02 22:13

I'm trying to use CImage in an ATL Active X. I only use methods from CImage Load, Draw and Destroy (which is noting strange). The problem is that when the application that uses the control ends, the DLL of the control can be unload. Any idea of what's the matter ?

How to keep selected items in two List Control Boxes highlighed at same time?

Matias17-Oct-02 21:16

Matias

17-Oct-02 21:16

I have two List Control boxes in a dialog. and I wish the user can select a few items from the first list and some items from the second list, and then the user can see all the items he just chose are still highlighted in both lists.

now after i selected one or some items in the first list(they'll get highlighted at this time), when i click in the second list and select items there, the first list will lose focus and the highlighted items in the first list will lose highlighting. Anybody can suggest me how to solve it? thx a lot in advance.

Re: How to keep selected items in two List Control Boxes highlighed at same time?

alex.barylski17-Oct-02 23:36

alex.barylski

17-Oct-02 23:36

Just a guess, but the list view control has a 'Show selection always' property...

If that doesn't do the trick then you'd have to devise something using owner draw...

Either way only one item can ever have focus so I hope you don't desire the focus rectangle also...?

Cheers! Smile | :)

"An expert is someone who has made all the mistakes in his or her field" - Niels Bohr

Re: How to keep selected items in two List Control Boxes highlighed at same time?

Matias18-Oct-02 3:55

Matias

18-Oct-02 3:55

hi Hockey?!, Smile | :)

...

thx a lot for ur tips! i tried to use the property of 'Show selection always', it works!

only thing now is that the highlighted color turns from blue to gray once the list losing focus. anyone got any idea about still keep it in blue besides using owner draw?

thx a lot again!;P

Re: How to keep selected items in two List Control Boxes highlighed at same time?

Mash18-Oct-02 6:11

Mash

18-Oct-02 6:11

You will have to add a message handler OnCustomDrawList to your listCtrl class
using

ON_NOTIFY(NM_CUSTOMDRAW,IDC_LIST_CTRL,OnCustomdrawList)

Check out an article by Michael Dunn at

http://www.codeproject.com/listctrl/lvcustomdraw.asp

You will also find some similar implementations(of OnCustomDraw) on www.codeguru.com as well.

Happy Coding !!

-Mahesh Shimpi
Ideas multiply by sharing!!

Re: How to keep selected items in two List Control Boxes highlighed at same time?

Matias18-Oct-02 6:38

Matias

18-Oct-02 6:38

thx a lot, Mahesh!

seems i got no choice now, Smile | :)

...

but the coding process is really wonderful!

about comboBox limit

vgkotha17-Oct-02 21:02

vgkotha

17-Oct-02 21:02

hi i like to use combobox for storing items in vc++. but the problem is it
can't store more than 32,735 items because of integer datatype limit is 32735. But in MFC int lenght is around -2 crores to +2crores. even it accepts only 32735 items only.why? please explain how can i add items into combobox more than 32,735. how can i overcome this limit
please help about this

thank you
from
venu

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