C / C++ / MFC Discussion Boards

siggapet7-Jul-04 3:49

7-Jul-04 3:49

How are you planning on ending that editbox? Those labeledits are either aborted with esc or accepted by pressing enter. A multiline labeledit would instead create an extra line when the user hits enter. I suspect this is the reason the control is refusing to become multiline. A solution would be to overload the F2-key and pop up your own dialog with a multiline edit box, a OK button and a Cancel button.

Re: Making an Edit multiline?

steven117-Jul-04 6:06

steven11

7-Jul-04 6:06

You can end it with clicking outside the edit on a treeview-item (done by the treeview-control). it's a normal editbox and therefore i should be able to change the style BEFORE it receives the first message (WM_CREATE). and i don't want your solution with the dialog, i don't think that's nice :/

Difference between thread and fiber on windows

haritadala7-Jul-04 1:46

haritadala

7-Jul-04 1:46

Hello all

Can any one please explain me the difference between thread and a fiber? In what circumstances we should go for a fiber? Please give me some sample code or point to URL where I can get the same.

Thanks for your help.
Hari.

Re: Difference between thread and fiber on windows

David Crow7-Jul-04 2:35

David Crow

7-Jul-04 2:35

From MSDN:

A fiber is a unit of execution that must be manually scheduled by the application. Fibers run in the context of the threads that schedule them. Each thread can schedule multiple fibers. In general, fibers do not provide advantages over a well-designed multithreaded application. Fibers are not preemptively scheduled.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

How to Detect Invalid Filenames

Steve Thresher7-Jul-04 1:37

Steve Thresher

7-Jul-04 1:37

Is there an API available to check if a filename is valid. At the moment the only information I can find is in the help for CreateFile() where it gives a list of invalid characters and filenames such as ./?\* or com1,con,lpt.

Systems AXIS Ltd - Software for Business ...

Re: How to Detect Invalid Filenames

V.7-Jul-04 1:44

7-Jul-04 1:44

try/catch opening the file with specified filename?

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix

Re: How to Detect Invalid Filenames

PengFeidu7-Jul-04 2:17

PengFeidu

7-Jul-04 2:17

Hello!
if you only check the string of the filename,you can check if the string have the list of "./?;'".

if you check whether the file is existent, you can use code as follow in VC6.0 :

BOOL CheckIfFileExists (LPCTSTR szFileName)
{
ASSERT( szFileName != NULL );

if( _tcslen(szFileName) == 0 ) return FALSE;

DWORD dwAttr = GetFileAttributes(szFileName);
if( dwAttr == 0xFFFFFFFF ) return FALSE;
return (dwAttr & FILE_ATTRIBUTE_DIRECTORY) == 0;
}

dupengfei

i Have two Question Pls Some one reply

ThatsAlok6-Jul-04 23:55

ThatsAlok

6-Jul-04 23:55

Question #1 : pls some give me some good pointer to smart card api's. i need them urgently or some sample project using Smart Card apis

Question #2: i am unable to use or rather say understand RegisterWindowMessage() api's.Any body pls gice me some pointer towrad it also.

thanks a lot in advance

I Think It will Work
-----------------------------
Alok Gupta
visit me at http://www.thisisalok.tk

Re: i Have two Question Pls Some one reply

Abhi Lahare7-Jul-04 0:34

Abhi Lahare

7-Jul-04 0:34

Alok the programmer wrote:
Question #2: i am unable to use or rather say understand RegisterWindowMessage() api's.Any body pls gice me some pointer towrad it also.

Here is some explaination from one of expert:

The RegisterWindowMessage function defines a new window message
that is guaranteed to be unique throughout the system.

So with that in minde this is one example of how to use this
special message.

If I have this code in one of my applications:

<br />
LRESULT CALLBACK MyWindowProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)<br />
{<br />
  LRESULT Result;<br />
<br />
  static UINT my_message = RegisterWindowMessage("my_message");<br />
<br />
  if (msg == my_message)<br />
  {<br />
    MessageBox(hwnd, "Someone sent me my_message", "Message", MB_OK);<br />
    return 0;<br />
  }<br />
<br />
  ....<br />
<br />
  return Result;<br />
}<br />

I could talk to that application from my second application
using the following code:

// Use FindWindow, EnumWindows and EnumChildWindows to get
// the hwnd of the other application
hwnd = getting_other_hwnd_left_as_excersise_function();

UINT my_message = RegisterWindowMessage("my_message");

//-- post the hwnd the special message
::PostMessage(hwnd, my_message, 0, 0);

You could also do this:

//-- broad cast a special message
::PostMessage(HWND_BROADCAST, my_message, 0, 0);

but in this case you would need to trap the message in the
second application using the following code instead:

  <br />
while (GetMessage(&msg, (HWND) NULL, 0, 0)) <br />
{<br />
  if (msg == my_message)<br />
  {<br />
    MessageBox(hwnd, "Someone sent me my_message", "Message", MB_OK);<br />
  }<br />
  else<br />
  {<br />
    TranslateMessage(&msg);<br />
    DispatchMessage(&msg);<br />
  }<br />
}<br />

Jussi Jumppanen
Author of: Zeus for Windows, Win32 (Brief, WordStar, Emacs) Text Editor
"The C/C++, Java, HTML, Pascal, Cobol, Fortran programmer's text editor"
Home Page: http://www.zeusedit.com
Hope this will help you.

Regards
Abhishake

Re: i Have two Question Pls Some one reply

ThatsAlok7-Jul-04 2:34

ThatsAlok

7-Jul-04 2:34

thanks abishek
but i am still not successful in doing this.

could you pls send me the sample project for both application at email address cocokola@rediffmail.com
thanks a lot

-----------------------------
"I Think It will Work"
-----------------------------
Alok Gupta
visit me at http://www.thisisalok.tk

Re: i Have two Question Pls Some one reply

David Crow7-Jul-04 2:57

David Crow

7-Jul-04 2:57

When using SendMessage() and PostMessage(), the ID of the message has historically been based on WM_USER, with newer applications starting to use WM_APP. While this certainly works, the possibnility exists for two applications (DLLs, actually) to send the same message, resulting in undesired behavior. Using WM_USER or WM_APP with SendMessageToDescendents() is also asking for trouble. The solution, therefore, is to use a registered message. It is guaranteed to be unique. The message only means something to the window that created it and the target window.

Read this article for more.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: i Have two Question Pls Some one reply

ThatsAlok7-Jul-04 4:29

ThatsAlok

7-Jul-04 4:29

thanks for wonderful article,my problem solved.

have you any idea abt SmartCard api's sir

-----------------------------
"I Think It will Work"
-----------------------------
Alok Gupta
visit me at http://www.thisisalok.tk

Re: i Have two Question Pls Some one reply

David Crow7-Jul-04 4:32

David Crow

7-Jul-04 4:32

Alok the programmer wrote:
have you any idea abt SmartCard api's sir

No.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: i Have two Question Pls Some one reply

Abhi Lahare7-Jul-04 2:58

Abhi Lahare

7-Jul-04 2:58

Hi Alok,

I don't have sample project. but take a look (if you have'nt before)at the example which is using RegisterWindowMessage() function. Here

Hope this help Smile | :)

Regards
Abhishake

Re: i Have two Question Pls Some one reply

ThatsAlok7-Jul-04 4:37

ThatsAlok

7-Jul-04 4:37

thanks yaar

-----------------------------
"I Think It will Work"
-----------------------------
Alok Gupta
visit me at http://www.thisisalok.tk

how activex control is created?

Abhi Lahare6-Jul-04 23:43

Abhi Lahare

6-Jul-04 23:43

Hi All,

When some embeds the ATL ActiveX Control in the web page like

<object id="MyID" classid="CLSID: 9698F21D-F7A3-4968-B80C-850BEE451D3C" align="CENTER” height =" 100%"="" width="100%">

How the control creation and initialization is done internally.

Thanks in advance,
Abhi Lahare

How to Write Installer

Zeeshan Bilal6-Jul-04 23:37

Zeeshan Bilal

6-Jul-04 23:37

I write an installer using Visual Studio Installer
for VC++ 6 application.

but i want an interface as some installer have totaly Blue n maximized backgroud .
and aslo need a setup file
innstaller only make a msi file ..

2 :: During installation with installer msi file
it gives the eror on Client
that Failed to register MFC42D.dll .. i m copying MFCO42D.dll , MFC42D.dll and MSVCRTD.DLL on client

y it is giving this error

thanx

how can i forcely Minimize the Dailog

Zeeshan Bilal6-Jul-04 21:38

Zeeshan Bilal

6-Jul-04 21:38

HI,

How can i forcly Minimize the Dialog.
For Example if user do some thing illegle
then i want to minimze hte dialog.

any idea
thanx

Re: how can i forcely Minimize the Dailog

V.6-Jul-04 21:50

6-Jul-04 21:50

ShowWindow(SW_MINIMIZE);

more values:
SW_FORCEMINIMIZE
Windows 2000/XP: Minimizes a window, even if the thread that owns the window is hung. This flag should only be used when minimizing windows from a different thread.
SW_HIDE
Hides the window and activates another window.
SW_MAXIMIZE
Maximizes the specified window.
SW_MINIMIZE
Minimizes the specified window and activates the next top-level window in the Z order.
SW_RESTORE
Activates and displays the window. If the window is minimized or maximized, the system restores it to its original size and position. An application should specify this flag when restoring a minimized window.
SW_SHOW
Activates the window and displays it in its current size and position.
SW_SHOWDEFAULT
Sets the show state based on the SW_ value specified in the STARTUPINFO structure passed to the CreateProcess function by the program that started the application.
SW_SHOWMAXIMIZED
Activates the window and displays it as a maximized window.
SW_SHOWMINIMIZED
Activates the window and displays it as a minimized window.
SW_SHOWMINNOACTIVE
Displays the window as a minimized window. This value is similar to SW_SHOWMINIMIZED, except the window is not activated.
SW_SHOWNA
Displays the window in its current size and position. This value is similar to SW_SHOW, except the window is not activated.
SW_SHOWNOACTIVATE
Displays a window in its most recent size and position. This value is similar to SW_SHOWNORMAL, except the window is not actived.
SW_SHOWNORMAL
Activates and displays a window. If the window is minimized or maximized, the system restores it to its original size and position. An application should specify this flag when displaying the window for the first time.

hope this helps Smile | :)

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix

How to develop this ISAPI?

wood6-Jul-04 21:14

wood

6-Jul-04 21:14

I want to create a ISAPI so that when a visitor click a specific link to require for a specific page, the ISAPI can get the result which is processed by IIS, and modify this result , then send this result to the client.Can you help me?Thanks

Messagebox

Anonymous6-Jul-04 20:59

Anonymous

6-Jul-04 20:59

sorry for asking a very elementary question but i m
new to VC++
Can there be a messagebox without any buttons??

green_trees

Re: Messagebox

A T I F6-Jul-04 21:08

A T I F

6-Jul-04 21:08

I think not from MessageBox API...You can create your own dialog and control it via DoModal and EndDialog and have the appearance look of a MessageBox...

Re: Messagebox

Liger_Zero_X6-Jul-04 21:16

Liger_Zero_X

6-Jul-04 21:16

I think, there will Always be Button/s around it... You need to Fill In the Last Parameter...

Re: Messagebox

Anonymous6-Jul-04 21:36

Anonymous

6-Jul-04 21:36

well, can u point the main difference between MessageBox and AfxMessageBox?

Re: Messagebox

Jose Cezar S. Ynion6-Jul-04 22:52

Jose Cezar S. Ynion

6-Jul-04 22:52

Anonymous wrote:
well, can u point the main difference between MessageBox and AfxMessageBox?

AfxMessageBox - a global function.
MessageBox - a method available within a CWnd derived class

You cannot call MessageBox within a non CWnd derived class.
Ex:

class A
{
public:
void Display()
{
// error
MessageBox(...);
// should be
AfxMessageBox(...)
}
};

But in this example

class A
{
public:
void Display()
{
MessageBox(...); // OK, juts like calling this->MessageBox(..)
AfxMessageBox(...) // ok
}
};

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.