Is there a deeper, hidden meaning behind this. - C / C++ / MFC Discussion Boards

NYTSX11-Nov-05 1:54

11-Nov-05 1:54

I do call Close() when the disconnect button is pressed. At that point I also do a Listen() which I figured would allow for the next client to connect to the server?

Any more suggestions? Would this be sufficient to have the server always be ready to accept a connection when one is not already established?

Progress bar being resized

PrashantJ10-Nov-05 10:47

PrashantJ

10-Nov-05 10:47

Hi,
I have this code to draw a progress bar at run time, but I dont' want the user to resize it. So is there any way by which I could restrict the user from resizing it.

CProgressCtrl m_ProgressBar;
m_ProgressBar.Create(WS_CHILD|WS_VISIBLE|WS_THICKFRAME ,
CRect(10,rectWnd.top + headerHeight+55,window.Width()-2*10,20),
(CWnd *)this, IDC_PROGRESSBAR);

I think will have to add some WS_ option but don't know exactly.

Thanks,
PJ

Re: Progress bar being resized

David Crow10-Nov-05 10:50

David Crow

10-Nov-05 10:50

Unless I'm missing something here, controls are not normally resizeable at runtime.

"Take only what you need and leave the land as you found it." - Native American Proverb

Re: Progress bar being resized

PrashantJ10-Nov-05 10:52

PrashantJ

10-Nov-05 10:52

But I draw other controls like button, edit box, group box, They are not resizable..
Thanks,

Re: Progress bar being resized

David Crow10-Nov-05 10:59

David Crow

10-Nov-05 10:59

PrashantJ wrote:
But I draw other controls like button, edit box, group box, They are not resizable..

My point exactly.

"Take only what you need and leave the land as you found it." - Native American Proverb

Re: Progress bar being resized

krmed10-Nov-05 17:00

krmed

10-Nov-05 17:00

Remove the WS_THICKFRAME style.

Good luck.

Karl - WK5M
PP-ASEL-IA (N43CS)
<kmedcalf@ev1.net>
PGP Key: 0xDB02E193
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Re: Progress bar being resized

PrashantJ11-Nov-05 3:25

PrashantJ

11-Nov-05 3:25

No that didn't work Frown | :(

Is there a deeper, hidden meaning behind this.

WREY10-Nov-05 9:53

WREY

10-Nov-05 9:53

On the surface it doesn't make sense, but I recall 'PJ Arends' mentioned something about it in one of his articles, and now I see something similar to it in another article, which is causing me to try and remember the real reason behind its use.

Here's the code.

BOOL CALLBACK CMyApp::searcher(HWND hWnd, LPARAM lParam)
{
    DWORD result;
    LRESULT ok = ::SendMessageTimeout(hWnd,
                                      UWM_ARE_YOU_ME,
                                      0, 0, 
                                      SMTO_BLOCK |
                                      SMTO_ABORT_IF_HUNG,
                                      200,
                                      &result);
    if(ok == 0)
       return TRUE;          // ignore this and continue

    if(result == UWM_ARE_YOU_ME)
    {
        HWND* target = (HWND*)lParam;  // value assigned to ptr
        *target = hWnd;                // value assigned to ptr AGAIN!
        return FALSE;        // stop search
    }

    return TRUE;             // continue search
}

Is there a reason for the reassigning of a value to the same variable in this manner?

Unsure | :~

William

Fortes in fide et opere!

Re: Is there a deeper, hidden meaning behind this.

David Crow10-Nov-05 10:52

David Crow

10-Nov-05 10:52

You might want to pose this question to Dr. Newcomer.

The only other thing that I can offer is that:

HWND *target = (HWND *) lParam;

equates to:

HWND *target;
target = (HWND *) lParam;

which is different than:

*target = hWnd;

"Take only what you need and leave the land as you found it." - Native American Proverb

Re: Is there a deeper, hidden meaning behind this.

WREY10-Nov-05 12:44

WREY

10-Nov-05 12:44

Your explanation makes a lot of sense and I believe is the reason for what's being done.

Thanks.

Big Grin | :-D

William

Fortes in fide et opere!

Re: Is there a deeper, hidden meaning behind this.

John R. Shaw10-Nov-05 17:40

John R. Shaw

10-Nov-05 17:40

I saw that David explaned that it was not a reassignment.

I hope someone knows the anwser to the implied question: What is the reason behind this?

I consider that more important, because I would have just returned the handle to hWnd or 0, instead of returning TRUE or FALSE. It would have been a lot simpler.

INTP
Every thing is relative...

Re: Is there a deeper, hidden meaning behind this.

PJ Arends11-Nov-05 7:59

PJ Arends

11-Nov-05 7:59

John R. Shaw wrote:
I consider that more important, because I would have just returned the handle to hWnd or 0, instead of returning TRUE or FALSE. It would have been a lot simpler.

Searcher is an EnumWindows callback function. Nowhere in the documentation (that I could find anyway) do you have access to the return value from the callback function. It is only used by the EnumWindows function as a signal to continue or stop the search. The LPARAM parameter however is guaranteed to be consistant through out the EnumWindows process. The idea behind the code is to return the HWND of the found window to the process that called EnumWindows, and it is done through the LPARAM variable.

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Re: Is there a deeper, hidden meaning behind this.

John R. Shaw11-Nov-05 9:13

John R. Shaw

11-Nov-05 9:13

PJ Arends wrote:
Searcher is an EnumWindows callback function.

Thanks! I did not think of that. D'Oh! | :doh:

INTP
Every thing is relative...

Re: Is there a deeper, hidden meaning behind this.

WREY14-Nov-05 7:15

WREY

14-Nov-05 7:15

Thanks!

That clears things up.

Smile | :)

William

Fortes in fide et opere!

Re: Is there a deeper, hidden meaning behind this.

Owner drawn13-Nov-05 17:51

Owner drawn

13-Nov-05 17:51

WREY wrote:
HWND* target = (HWND*)lParam; // value assigned to ptr *target = hWnd; // value assigned to ptr AGAIN!

I think he is Indirectly trying to modify lParam.

Owner Drawn
--Nothing special

Can not retrieve current URL address

llp00na10-Nov-05 9:50

llp00na

10-Nov-05 9:50

Dear All,

I am using the IWebBrowser control as part of my project. My application browses to the internet. Whenever i browse to a certain web site, the url on the address bar does not change to match the current web page.

I am trying to get the current URL using the following method.

CString currentURL = m_webBrowser.get_LocationURL(); (where m_webBrowser is an instance of CExplorer1)

this only works if the url is manually entered in the address bar. however, If a certain web page is pursued through clicks, the above does not give any results.

In a nutshell,
can someone tell me how to retrieve the current URL of a particular web site being browsed ? (in both case, when the url is typed or if resulted from link clicks)

your suggestions would be highly appreciated.

Cheers

llp00na

Re: Can not retrieve current URL address

*Dreamz10-Nov-05 17:35

*Dreamz

10-Nov-05 17:35

Handle the event BeforeNavigate2 of the web browser control..The parameter VARIANT* URL, will give you the url of the page it is going to load....

Package load error in VS2005?

TheGreatAndPowerfulOz10-Nov-05 8:38

TheGreatAndPowerfulOz

10-Nov-05 8:38

I had a similar issue. After installing the VS2005 Pro as well as the VS2005 C++ express, I got a package load error each time I started VS2005 pro OR the vs2005 C++ express editon. I uninstalled and reinstalled several times and got the same result. I also tried using the uninstall exectutable from Microsoft to no avail.

Finally I took the following steps:

1. uninstalled EVERYTHING that had to do with Visual Studio, and .NET components (2.0, 1.1, 1.0), SQL Server and MSDN, MSXML. I mean everything. I followed the uninstall directions given in the dialog after uninstalling Visual Studio and removed/uninstalled the items in the order specified.
2. Then I went to the WINDOWS\assembly directory and deleted EVERYTHING under that directory.
3. I went to "Program Files" directory and deleted everything that had to do with Visual Studio and .NET (2.0, 1.1, 1.0) and SQL Server and MSDN.
4. I also went to the following directories and deleted everything and all directories that had to Visual Studio, SQL Server, MSDN and .NET (2.0, 1.1, 1.0)

"Documents and Settings\<username>\Application Data\Microsoft"
"Documents and Settings\<username>\Local Settings\Application Data\assembly"
"Documents and Settings\<username>\Local Settings\Application Data\Microsoft"

5. Finally I deleted all tempory files in all temporary directories and cleared the internet cache and temporary files using IE
6. I also went to "My Documents" and deleted the Visual Studio stuff there.

After all that I reinstalled VS2005 Pro and VS2005 C++ express and I no longer get the errors.

How can I add a local hot key?

DanYELL10-Nov-05 8:29

DanYELL

10-Nov-05 8:29

I looked for articles on this before asking a question on this
forum. But...

How can I add a local hotkey to an application only? I want to
add the hotkey CTRL + A and I want it to popup a dialog box.
Anyone have any sample code, instructions, or a simple demo
project?

Please, any response any one can give me will be greatly
appreciated.

My email is brinasas@yahoo.com

Sincerely,
Danielle Brina (an overworked graduate student)

Re: How can I add a local hot key?

David Crow10-Nov-05 8:41

David Crow

10-Nov-05 8:41

I assume you are talking about an accelerator. If so, you first need to add an entry to the accelerator table. Per MSDN:

1) Select the new-item box at the end of the list.
2) Type the key you want to use as an accelerator. The Accel Properties page appears, with the focus in the Key box.
3) Select an ID from the drop-down list in the ID box.
4) Change the modifier and type, if necessary. The modifier specifies whether the key you chose is a combination formed with CTRL, ALT, or SHIFT. The type indicates whether the key is an ASCII or a virtual key value.
5) Press ENTER.

You'll then need to call LoadAccelerators() to load the table. In your message pump, use TranslateAccelerator().

"Take only what you need and leave the land as you found it." - Native American Proverb

Re: How can I add a local hot key?

Owner drawn10-Nov-05 18:04

Owner drawn

10-Nov-05 18:04

Take a look at RegisterHotKey, UnRegisterHotKey, WM_HOTKEY.

Happy Programming. Laugh | :laugh:

Owner Drawn
--Nothing special

how to bold static text control

elephantstar10-Nov-05 7:39

elephantstar

10-Nov-05 7:39

How do I bold a static text control? Thanks!

Re: how to bold static text control

David Crow10-Nov-05 8:24

David Crow

10-Nov-05 8:24

There is a brief example here.

"Take only what you need and leave the land as you found it." - Native American Proverb

Re: how to bold static text control

elephantstar10-Nov-05 12:43

elephantstar

10-Nov-05 12:43

Thanks David!

Control Data Entry in Console Applications

Sabry190510-Nov-05 7:31

Sabry1905

10-Nov-05 7:31

Hi All
I am using "ISO ANSI C++",and i am beginner in C++, and i am working now in console applications , and i want to know if is there any way to control data entry in "ISO ANSI C++"
for example
close all the keyboard except the numerical keys
so user can only add numbers
thx all

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