Re: How to separately color entries in an editbox?? - C / C++ / MFC Discussion Boards

Re: Suppressing "What do you want Windows to do?" message

vineas7-Jun-05 13:19

7-Jun-05 13:19

Turns out I didn't need to use the registry value anyway, the article at the link I put in earlier had a message that is sent to the top level window just before auto play is enacted. I ended up hooking this in a background thread whenever the CD burning dialogs are up, worked really well and didn't have to worry about messing up registry or a blocking AfxMessageBox call (one of the big problems I had once I figured out the message I needed to handle).

Thanks again for all the help, the code project has been a constant source of help and inspiration.

-----
In the land of the blind, the one eyed man is king.

Setting parent Window handle of a MFC dialog

User 5826196-Jun-05 12:26

User 582619

6-Jun-05 12:26

Hi,

I'm currently writing a screensaver. I do not use the scrnsave.h template.
In order to open the configuration window properly I need to open my configuration dialog with a command line provided window handle as its parent. Unfortunately I cant provide a window handle to my dialogs constructor since it expects a CWnd derived object and I cannot create a CWnd object directly. How do I change the Dialog parent window handle?

Currently I open the dialog with:

CWatorSaverDlg dlg;
m_pMainWnd = &dlg;

What do I have to change?

Regards,
Ingo

Re: Setting parent Window handle of a MFC dialog

Blake Miller6-Jun-05 12:35

Blake Miller

6-Jun-05 12:35

You can instantiate a CWnd object.
Then use the Attach member to attach it to the HWND you have.
Use this CWnd as the parent for the dialog.
When the dialog is done, detach the CWnd from the HWND.
Then delete the CWnd.

CWnd* pTempParent = NULL;
pTempParent = new CWnd();
pTempParent->Attach(PassedHWnd);

...

CWatorSaverDlg dlg(pTempParent);

...

pTempParent->Detach();
delete pTempParent;

How to separately color entries in an editbox??

Anonymous6-Jun-05 10:28

Anonymous

6-Jun-05 10:28

Hi,

Here's the problem: I wrote a chat program in which each user has a different color. Unfortunately, I don't know how to get these different colors to appear in the editbox I'm using for the main chat window.

How do I color a certain portion of text in an editbox to be different from other portions of text?

Thanks!

Re: How to separately color entries in an editbox??

PJ Arends6-Jun-05 12:33

PJ Arends

6-Jun-05 12:33

Use a rich edit control. See CRichEditCtrl::SetSelectionCharFormat().

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Honoured as one of The Most Helpful Members of 2004

Re: How to separately color entries in an editbox??

KellyR6-Jun-05 17:10

KellyR

6-Jun-05 17:10

I have a problem kinda similar to this:

I create a CRichEditCtrl using CreateEx, like this:

chat_window_rich.CreateEx(0, "Edit","", WS_TABSTOP | WS_CHILD | WS_VISIBLE | ES_MULTILINE | ES_AUTOVSCROLL |
ES_READONLY | WS_VSCROLL, W_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, hwnd, (HMENU)CHAT_WINDOW,NULL);

Then I try to set the text color using this:

CHARFORMAT cf;
::memset( &cf, 0, sizeof( cf ) );
cf.cbSize = sizeof( cf );
cf.dwMask = CFM_COLOR;
cf.crTextColor = RGB( 255, 160, 160 );
int test = SendMessage(chat_window_rich.GetSafeHwnd(), EM_SETCHARFORMAT, (WPARAM) SCF_ALL, (LPARAM) &cf );

But the SendMessage always fails, and the text isn't set. ??? Does anyone know what might be wrong?

Kelly Ryan

Re: How to separately color entries in an editbox??

PJ Arends6-Jun-05 18:22

PJ Arends

6-Jun-05 18:22

KellyR wrote:
chat_window_rich.CreateEx(0, "Edit",

If chat_window_rich is a CRichEditCtrl type why not use CRichEditCtrl::Create() instead of CWnd::CreateEx() as you are not specifying any extended styles? If you must use the form you are using then you have to specify the proper classname. You can use the macro RICHEDIT_CLASS or failing that the possible class names are "RichEdit", "RichEdit20A", or "RichEdit20W".

Right now, because you specified "Edit" as the class name you are creating a plain old edit control, not a rich edit control, that does not know what the EM_SETCHARFORMAT message is.

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Honoured as one of The Most Helpful Members of 2004

Re: How to separately color entries in an editbox??

KellyR6-Jun-05 18:41

KellyR

6-Jun-05 18:41

YES!!!! IT WORKS!!!!

Thank you so much!!! I've been trying to get this damn thing to work for like 4 hours!
WOOHOOO

Kelly Ryan

Re: How to separately color entries in an editbox??

Nilesh K.6-Jun-05 18:04

Nilesh K.

6-Jun-05 18:04

You can have it as owner drawn and override WM_DRAWITEM, This would allow you to put the text in a way that you need.

<bold>- Nilesh
<italics>
"Reading made Don Quixote a gentleman. Believing what he read made him mad" -George Bernard Shaw

Re: How to separately color entries in an editbox??

PJ Arends6-Jun-05 18:32

PJ Arends

6-Jun-05 18:32

Nilesh K. wrote:
You can have it as owner drawn and override WM_DRAWITEM

You have done this with an edit control? I always thought WM_DRAWITEM was only for menus, buttons, and list and combo boxes.

Learn something new every day.

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Honoured as one of The Most Helpful Members of 2004

dialog on top of another app's window?

Peter Weyzen6-Jun-05 10:21

Peter Weyzen

6-Jun-05 10:21

I am trying to place a dialog directly on top of a window from another app.

I am trying to cope with some z-order issues. Of trying to get my little dialog to appear directly on top of another app's window.

The x-y position issues are just fine -- for testing I put my window at top-most and it looks great as long as the other app is #2.

Alternately, I'd be looking for a strategy to decide when the appropriate time is to hide my window... like when the region where'd i'd display myself is obscured.

Basically, it has to look as much like a built-in as possible.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br />
Peter Weyzen<br />
Staff Engineer<br />
<A HREF="http://www.santacruznetworks.com">Santa Cruz Networks</A>

Re: dialog on top of another app's window?

David Crow7-Jun-05 2:46

David Crow

7-Jun-05 2:46

First use BringWindowToTop() to being the other application's window to the top. Then use SetWindowPos(hWnd, HWND_TOP, ...) to put your app's window right in front of the other.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Socket Issue

Identity Undisclosed6-Jun-05 9:32

Identity Undisclosed

6-Jun-05 9:32

What will happen if I want to create a Socket giving it the IP of the machine where my program is not running. Will it be allowed or be nor allowed due to security. Actually, I want to communicate between two machine through Sockets .... but one machine runs on LAN and other is connected to Internet through direct modem ...

Re: Socket Issue

Nilesh K.6-Jun-05 18:23

Nilesh K.

6-Jun-05 18:23

I doubt it would be allowed to do that way.

<bold>- Nilesh
<italics>"Reading made Don Quixote a gentleman. Believing what he read made him mad" -George Bernard Shaw

Re: Socket Issue

ThatsAlok6-Jun-05 18:34

ThatsAlok

6-Jun-05 18:34

Ibraheem Khan wrote:
Actually, I want to communicate between two machine through Sockets .... but one machine runs on LAN and other is connected to Internet through direct modem ...

If you really want to communicate between two, you need Aa static IP and your ISP providing you support for connecting to that IP!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

How do save a screen to a bitmap

bkphat6-Jun-05 9:13

bkphat

6-Jun-05 9:13

I have created an SDI app and have drawn certain things on to the main window (lines, rectangels etc..). I would now like ot take that data, scale it down, and save it in a bitmap file. Is there a convenient way to simply take whatever the Redraw function does and make it draw the same thing on to a bitmap?

-bk

Re: How do save a screen to a bitmap

Ravi Bhavnani6-Jun-05 10:14

Ravi Bhavnani

6-Jun-05 10:14

See CMetaFileDC[^].

/ravi

My new year's resolution: 2048 x 1536
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Re: How do save a screen to a bitmap

ucc8016-Jun-05 17:56

ucc801

6-Jun-05 17:56

You need to create a memory bitmap at first and then drawing it on this memory bitmap,when finished,please convert CBitmap to bitmap file,I think the following sample codes to be useful to you (You cann't build it,it is only a sample):

BOOL CMyCanvasCore::DoDrawImage(CImage* pImage, CDC* pDC)
{
BOOL bSuccess = FALSE;
CDC dcMem;
CBitmap bmp;
CDC dcScreen;

dcScreen.Attach(::GetDC(0));

if (pDC == NULL)
{
pDC = &dcScreen;
}

dcMem.CreateCompatibleDC(pDC);

CRect rcVirtual(GetVirtualOrigin(), GetVirtualSize());
CSize szBitmap(rcVirtual.Width(), rcVirtual.Height());

PrepareDrawDC(pDC, FALSE);
pDC->LPtoDP(&szBitmap);

BOOL bBmpCreated = bmp.CreateCompatibleBitmap(pDC, szBitmap.cx, szBitmap.cy);

if (bBmpCreated)
{
dcMem.SelectObject(&bmp);

const CPoint ptOldLogOrg = GetLogOrigin();

CRect rcMargins;
GetMargins(rcMargins);
CSize szMargins(rcMargins.left, rcMargins.top);
FODPtoLP(&szMargins);

CPoint ptTopLeft(GetVirtualOrigin());
ptTopLeft.x += szMargins.cx;

ptTopLeft.y += szMargins.cy;

SetLogOrigin(ptTopLeft.x, ptTopLeft.y);

PrepareDrawDC(&dcMem, FALSE);

// Draw background.
DoDrawBackGround(&dcMem,rcVirtual);

GetCurrentModel()->OnDrawShapeNormal(&dcMem);

SetLogOrigin(ptOldLogOrg.x, ptOldLogOrg.y);

// pImage->MakeNewBitmap(&dcMem, &bmp);

bSuccess = TRUE;
}

dcScreen.Detach();

return bSuccess;
}

Jack

---------------------------------------------------------------------------------
XD++ MFC/C++ Flow/Diagram Library -- http://www.ucancode.net

Re: How do save a screen to a bitmap

ThatsAlok6-Jun-05 19:05

ThatsAlok

6-Jun-05 19:05

http://www.codeproject.com/cpp/painter_program.asp[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Emulating Windows Task Manager CPU Usage and history applets

Anonymous6-Jun-05 9:10

Anonymous

6-Jun-05 9:10

I need to emulate Windows Task Manager CPU Usage and history applets and am lost on what where i should begin - any suggestions ? How would i create the freq bar - etc.

thanks Smile | :)

Re: Emulating Windows Task Manager CPU Usage and history applets

Ravi Bhavnani6-Jun-05 10:16

Ravi Bhavnani

6-Jun-05 10:16

You can find a bunch of charting controls here[^]. Of course, you still need to first get at the information you want to display.

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

Win32 - How to Clip a window

dirkhelmet6-Jun-05 7:43

dirkhelmet

6-Jun-05 7:43

Using Win32, I need to "clip" a window - that is, draw only part of a window. I don't actually draw the window myself, but I wish to put it into a "clipping" region. An analogy would be the way a child MDI window can be clipped by it's parent.
Thanks for any help,
Rich

ps - if responding by email, remove the xxx from the middle of the email address.

worker thread and free

Pasquale826-Jun-05 6:37

Pasquale82

6-Jun-05 6:37

I have some problem with simple code:
There is a secondary thread that create an object this object have the method above

bool AccDatabase::Insert(Articolo* m_pArticolo)
{
char *sql = (char*) malloc( 1024 );
sprintf( sql, "//insert etc");
try {
m_pDatabase->Execute( sql );
free( sql );
return true;
}
catch (CDaoException *e){e->Delete();}
return false;
}

if i create this object in the secondary thread and call on it the metod insert i have an error of NullSystemException while if i create the object in main thread and i call on it the metod insert i have no error and the execution is ok...
where is the matter?
Tnx

Re: worker thread and free

Blake Miller6-Jun-05 6:51

Blake Miller

6-Jun-05 6:51

Probably whatever 'm_pDatabase' points to should also be created on the secondary thread.
When I did DAO work, I always did ALL the database work on the secondary thread, and it works fine.

Re: worker thread and free

Anonymous6-Jun-05 7:33

Anonymous

6-Jun-05 7:33

yes the object have a pointer to CDaoDatabase but in main thread i check if db exist (if not db will be created) but in any case i close the connection... in the secondary thread i created a new object and i do a new connection

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