Dynamic Loading Of Portions of Controls(List Boxes, List Controls, Edit Boxes) in a Dialog - C / C++ / MFC Discussion Boards

Re: Problems with Edit controls in MFC(help please)

moh.hijjawi1-Nov-09 7:21

1-Nov-09 7:21

Thank you for your help.

regarding the multiline its work when the output text its longer than one line,isn't it? thats what I noticed when I implemented it and I used the list control with no sorting property and work fine and the other works fine thank you very much again.

Regards,

Re: Problems with Edit controls in MFC(help please)

David Crow2-Nov-09 3:47

David Crow

2-Nov-09 3:47

moh.hijjawi wrote:
...I need after entering to delete the entered text or remove it (clear the input box)

Assuming you are using a CEdit control variable:

m_edit.SetWindowText("");

moh.hijjawi wrote:
And when I used the List control for the output box its works like list function there is an ordering happened for output texts.

Sounds like its sorting.

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Re: Problems with Edit controls in MFC(help please)

moh.hijjawi2-Nov-09 4:17

moh.hijjawi

2-Nov-09 4:17

thank you for your help.

its works fine

Re: Problems with Edit controls in MFC(help please)

MoOoOd11-Jan-11 20:36

MoOoOd

11-Jan-11 20:36

You Can Use : GetDlgItem(Write Here "ID" For That Control You Want To Change Text )->SetWindowsText("");

Re: Problems with Edit controls in MFC(help please)

David Crow12-Jan-11 2:07

David Crow

12-Jan-11 2:07

abo_alise wrote:
You Can Use : GetDlgItem...

I know that you can, but the issue is that you shouldn't.

"One man's wage rise is another man's price increase." - Harold Wilson

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Re: Problems with Edit controls in MFC(help please)

MoOoOd12-Jan-11 19:31

MoOoOd

12-Jan-11 19:31

Why I Shouldn't

Re: Problems with Edit controls in MFC(help please)

David Crow13-Jan-11 6:48

David Crow

13-Jan-11 6:48

See here.

Dynamic Loading Of Portions of Controls(List Boxes, List Controls, Edit Boxes) in a Dialog

Larry Mills Sr1-Nov-09 4:42

Larry Mills Sr

1-Nov-09 4:42

Can someone give me a link to implementing various control within a dialog dynamically. I need at times to replace existing controls in a dialog, with different controls depending on User selections.

A C++ programming language novice, but striving to learn

Re: Dynamic Loading Of Portions of Controls(List Boxes, List Controls, Edit Boxes) in a Dialog

CPallini1-Nov-09 7:23

CPallini

1-Nov-09 7:23

CreateWindow [^] function is the key to your success.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

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[My articles]

Re: Dynamic Loading Of Portions of Controls(List Boxes, List Controls, Edit Boxes) in a Dialog

«_Superman_»1-Nov-09 7:34

«_Superman_»

1-Nov-09 7:34

You can either place all the controls that you will ever be using in the dialog template and hide/show them as required or use the CreateWindow[^] API with the predefined class names as described in the remarks section.

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Re: Dynamic Loading Of Portions of Controls(List Boxes, List Controls, Edit Boxes) in a Dialog

Larry Mills Sr1-Nov-09 17:03

Larry Mills Sr

1-Nov-09 17:03

I understand what you are saying, I think. Ex. one useage requires a large listbox while another selection would require a large editbox. You are saying that while the dialog is displayed? I can change what is presented? Or must I close the dialog after the User made a selection and then reload it with the proper controls in place according to the User's previous selections?

A C++ programming language novice, but striving to learn

Re: Dynamic Loading Of Portions of Controls(List Boxes, List Controls, Edit Boxes) in a Dialog

«_Superman_»1-Nov-09 17:05

«_Superman_»

1-Nov-09 17:05

Yes, you can change what is displayed on the dialog without closing and reopening.
For example -

The following will hide the list box and show the edit box.

GetDlgItem(IDC_LIST1)->ShowWindow(SW_HIDE);
GetDlgItem(IDC_EDIT1)->ShowWindow(SW_SHOW);

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Re: Dynamic Loading Of Portions of Controls(List Boxes, List Controls, Edit Boxes) in a Dialog

Larry Mills Sr2-Nov-09 3:27

Larry Mills Sr

2-Nov-09 3:27

Thank you so much for your help. This really sovles my situation.

A C++ programming language novice, but striving to learn

Re: Dynamic Loading Of Portions of Controls(List Boxes, List Controls, Edit Boxes) in a Dialog

David Crow2-Nov-09 3:50

David Crow

2-Nov-09 3:50

I find the best way to handle this is to create all of the controls you'll need and then just enable/disable them at runtime.

Re: Dynamic Loading Of Portions of Controls(List Boxes, List Controls, Edit Boxes) in a Dialog

Larry Mills Sr2-Nov-09 14:05

Larry Mills Sr

2-Nov-09 14:05

Thanks again for the information.

A C++ programming language novice, but striving to learn

I need the answer of these Question soooo much plz

shafea1-Nov-09 3:59

shafea

1-Nov-09 3:59

how can I use the code of c++ in a function (like checksum) as a string in the same project ?
in another way :
I want to apply a function on the cpp file as a text one to calculate its text value

Re: I need the answer of these Question soooo much plz

Maximilien1-Nov-09 4:25

Maximilien

1-Nov-09 4:25

your question is not clear.

I'm not even certain _you_ understand what you wan to achieve ?

- you want to copy/paste the code from one function to another one ?
- you want to have a textual representation of a function and call it ? (ie. a bit like an interpreter does ?)
- apply what ? to what ?
- you want to have a text representation of the output of a function like "checksum"? (ie. print the result?)
- ...

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How can I avoid "Socket Notification Sink" error?

rambojanggoon1-Nov-09 1:19

rambojanggoon

1-Nov-09 1:19

when I try to "restart system" or "turn off system" , I get error message "Socket Notification Sink" Dialog box.
And it didn't work reboot or turn off..

How can I avoid "Socket Notification Sink" error?

My main brief code as followings.

<br />
<br />
/* tread will do send something  infinitely with 5 second sleep unless it is ended*/<br />
UINT _ThreadDoSomethingInfinite(LPVOID pParam)<br />
{<br />
	<br />
	char buf[100];<br />
	CSocket h_sock;<br />
	CMyDlg *p=(CMyDlg*)pParam;<br />
	h_sock.Create( nPort , SOCK_DGRAM);<br />
	while(1)<br />
	{<br />
		<br />
		Sleep(5000);		<br />
		.		<br />
		.<br />
		stcpy(buf, "some data..buffering..");<br />
<br />
		h_sock.SendTo( buf , 1234 , "127.0.0.1" );		<br />
	}<br />
	<br />
	//will never reach...<br />
	h_sock.ShutDown(2);<br />
	h_sock.Close();<br />
 }<br />
<br />
<br />
CWinThread g_updsock;<br />
BOOL CMyDlg::OnInitDialog()<br />
<br />
	g_updsock=AfxBeginThread(_ThreadSendAgentStatus,this,THREAD_PRIORITY_NORMAL);<br />
	if(g_updsock==NULL) return;<br />
<br />
}<br />
	<br />

Re: How can I avoid "Socket Notification Sink" error?

Moak2-Nov-09 9:22

Moak

2-Nov-09 9:22

Hi, I suggest to exit the endless loop when the application is signaled to terminate or an error occured. Add basic error handling to the socket methods, e.g. Create and SendTo return a status. Alternatively use a different socket class than MFC's CSocket or use plain sockets (Winsock).

/M

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To convert a DAT file to a BMP file

sgd.ind31-Oct-09 20:55

sgd.ind

31-Oct-09 20:55

Can anyone help me how to convert a DAT file to a BMP file?I have created a DAT file.Now while converting it to a BMP file, how can i insert the bmp header?

Re: To convert a DAT file to a BMP file

Code-o-mat1-Nov-09 3:00

Code-o-mat

1-Nov-09 3:00

What is in that DAT file? I presume it is an image, do you know the width, height and color depth?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <

Re: To convert a DAT file to a BMP file

sgd.ind1-Nov-09 3:21

sgd.ind

1-Nov-09 3:21

Yes.There is an image.
Actually i have converted a bmp image to a dat file(i have taken a 2D matrix,represented the foreground pixels with "1" and the background pixels with "0") for various operations like thinning,segmentation etc.Now i want to convert my modified dat file to bmp file.i know the width and height of 2d matrix.
how can i insert the bmp header at the beginning of the dat file?

Re: To convert a DAT file to a BMP file

Code-o-mat1-Nov-09 3:46

Code-o-mat

1-Nov-09 3:46

Well, i guess if you know the BMP format[^], all you have to do is fill out a BITMAPFILEHEADER[^] structure, then fill out a BITMAPINFO[^] and then write them to a file in the following order: BITMAPFILEHEADER, BITMAPINFOHEADER, DAT(a). Does this help?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <

convert md5 values to decimal

nuttynibbles31-Oct-09 20:14

nuttynibbles

31-Oct-09 20:14

hi,

i got a hash value which i wanna convert to 8 digit numbers.

for e.g hash values:
string hash = "df310c24eb35eee2af4f83bed8bee284";

i wanna convert this hash value into 8 digit numbers. how can i do so??

tks in adv

Re: convert md5 values to decimal

CPallini31-Oct-09 21:20

CPallini

31-Oct-09 21:20

This string contains 32 hexadecimal digits. So may represent 16 bytes, as well 8 shorts, as well 4 int.
If you need to convert it into an array of bytes (unsigned char) try something similar to:

#include <stdio.h>
void main()
{
	char  hash[] = "df310c24eb35eee2af4f83bed8bee284";
	char * p = hash;
	const unsigned int SIZE = (sizeof(hash)-1)/2;
	unsigned char arr[SIZE];
	unsigned int count=0;
	while (count < SIZE)
	{
		if (sscanf(p, "%2x", &arr[count]) != 1)
		{
			// handle error
		}
		count++;
		p+=2;
	}
}

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