C / C++ / MFC

Re: Need a simple way to change Back Color of CEdit & CStatic controls

23-Sep-05 2:05

I have a small problem were i need to
change the back color of the CEdit & CStatic
control , is there any simple code for the
same.
Yeh and how can i change the font color in
CEdit.
thank u

Vikas Amin
Embin Technology
Bombay
vikas.amin@embin.com

prasad_som23-Sep-05 2:40

prasad_som

23-Sep-05 2:40

use ON_WM_CTLCOLOR message

Re: Need a simple way to change Back Color of CEdit & CStatic controls

Laffis23-Sep-05 2:57

Re: Need a simple way to change Back Color of CEdit & CStatic controls

23-Sep-05 2:57

Cool! Learn something new everyday!
I suppose this is faster (performance wise) than use a derived class from CEdit etc and doing DrawItem ect. And much simpler.

vikas amin23-Sep-05 3:11

Re: Need a simple way to change Back Color of CEdit & CStatic controls

23-Sep-05 3:11

first of all Thank u for your reply

I am using a MFC application
were i am displaying a Dialogbox
were i have a CEdit control .
Which is suppose to change the colour
when a user enters invalid entry (non-numeric)

I dont wont to touch the base class (CEdit)
or nor want to derive new class from it .
ON_WM_CTLCOLOR

I need some solution i have tried to get the
"Device Context "of the edit box but it could
not print inside rather it printed outside the
Edit box .

Vikas Amin
Embin Technology
Bombay
vikas.amin@embin.com

vikas amin23-Sep-05 3:09

Re: Need a simple way to change Back Color of CEdit & CStatic controls

23-Sep-05 3:09

first of all Thank u for your reply Big Grin | :-D

I am using a MFC application
were i am displaying a Dialogbox
were i have a CEdit control .
Which is suppose to change the colour
when a user enters invalid entry (non-numeric)

I dont wont to touch the base class (CEdit)
or nor want to derive new class from it .
ON_WM_CTLCOLOR

I need some solution i have tried to get the
"Device Context "of the edit box but it could
not print inside rather it printed outside the
Edit box .

D'Oh! | :doh:

Vikas Amin
Embin Technology
Bombay
vikas.amin@embin.com

Laffis23-Sep-05 3:18

Re: Need a simple way to change Back Color of CEdit & CStatic controls

23-Sep-05 3:18

Use that message and handle it, amin, it is very easy. Do a search on the web you will get an example in msdn. I just spent 5 min doing that and get a test case working.

As to the number thing, you should be able to config the edit ctrl to accept number only. In the code, you may be able to use something like this:

DDV_MinMaxLong(...) <-- check reference how to use it. It's been a while since I last use them.

What u will get is if user inputs an invalid entry, a messagebox will come up telling him so. You do not even need to change the CEdit color to let him know.

vikas amin23-Sep-05 3:34

URLDownloadToFile intercepting my call

23-Sep-05 3:34

Thank you very much
i have got the code working now
The client requirement was to change the colour of the
dialog box so i had to do that .

just pasted the code for other programers

Example<br />
// This OnCtlColor handler will change the color of a static control<br />
// with the ID of IDC_MYSTATIC. The code assumes that the CMyDialog<br />
// class has an initialized and created CBrush member named m_brush.<br />
// The control will be painted with red text and a background<br />
// color of m_brush.<br />
<br />
<br />
HBRUSH CZilchDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) <br />
{<br />
   // Call the base class implementation first! Otherwise, it may<br />
   // undo what we're trying to accomplish here.<br />
   HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);<br />
<br />
   // Are we painting the IDC_MYSTATIC control? We can use<br />
   // CWnd::GetDlgCtrlID() to perform the most efficient test.<br />
   if (pWnd->GetDlgCtrlID() == IDC_MYSTATIC)<br />
   {<br />
      // Set the text color to red<br />
      pDC->SetTextColor(RGB(255, 0, 0));<br />
<br />
      // Set the background mode for text to transparent <br />
      // so background will show thru.<br />
      pDC->SetBkMode(TRANSPARENT);<br />
<br />
      // Return handle to our CBrush object<br />
      hbr = m_brush;<br />
   }<br />
<br />
   return hbr;<br />
}<br />

Vikas Amin
Embin Technology
Bombay
vikas.amin@embin.com

spsharma23-Sep-05 1:35

spsharma

23-Sep-05 1:35

I am using URLDownloadToFile to download a url, but default download manager like DAP intercepting the download. Is there a way to make it downloadable without using default download manager.

DirectShow Editing Services transition and effect priority problem...

Kramer_198223-Sep-05 1:21

Kramer_1982

23-Sep-05 1:21

Does anyone know how you can add an effect over a timeline track, with a lower priority over a transition applied on the same track using DirectShow Editing Services?

I have 2 video tracks with a transition between them, the first track contains green colored areas (0, 255, 0) and the second track is applied over the first using a key transition over the green areas. I want to add an effect over the first track (e.g. Grayscale)... now the problem is that the effect applies itself before the transition, thus changing the key transition color, and the second track doesn't appear anymore.

Is there anyway to apply the effect after the transition?

Thank you!

::LoadBitmap

Laffis23-Sep-05 1:10

23-Sep-05 1:10

Do you people ever come across problem that this does not work?

HBITMAP hBmp = ::LoadBitmap(NULL, MAKEINTRESOURCE(IDB_BITMAP2));
I got 0 returned by the above func. Why? I am always in a bit of struggle with bitmap as I have not done much with it. Anyone can shed some light?
My bitmap is created in dev studio.

Cedric Moonen23-Sep-05 1:23

Cedric Moonen

23-Sep-05 1:23

You have to pass the handle to the application instance as first parameter function.

Laffis23-Sep-05 1:41

23-Sep-05 1:41

The code is from Msdn website. I just mangaged to get it work:

BOOL CMFCPlayingPenDlg::OnInitDialog()<br />
{<br />
	  CDialog::OnInitDialog();<br />
           .....<br />
	  DWORD dwStyle = WS_CHILD|WS_VISIBLE|SS_BITMAP|SS_CENTERIMAGE;<br />
	  m_staticX.ModifyStyleEx(0, dwStyle);<br />
	  HBITMAP hBmp = ::LoadBitmap(0, MAKEINTRESOURCE (IDB_BITMAP1));<br />
	  m_staticX.SetBitmap(hBmp);<br />
}

The strange thing is that I did not change much but this time bitmap was loaded. However, the bitmap does not appear on my static ctrl... D'Oh! | :doh:

Cedric Moonen23-Sep-05 2:01

Cedric Moonen

23-Sep-05 2:01

Is that working if you pass the handle of the application instance as first parameter as I suggested in my first post ?

Laffis wrote:
The strange thing is that I did not change much

Laffis wrote:
HBITMAP hBmp = ::LoadBitmap(0, MAKEINTRESOURCE (IDB_BITMAP1));

What did you change EXACTLY at this line of code (post what was shown on the MSDN website).

Laffis23-Sep-05 2:40

Context menu in TreeView control ??

23-Sep-05 2:40

I tried to ::AfxGetInstanceHandle() and passed it replace 0 with the instance handle. Bitmap still gets no-shown.

cedric moonen wrote:
What did you change EXACTLY at this line of code (post what was shown on the MSDN website).

I played about the static ctrl the bitmap is supposed to attach to. I may have modified style, and later create a derived class off CStatic, that's about it. The CStaticX class does nothing special inside apart from the code generated by Wizzard.

Anonymous23-Sep-05 1:04

Anonymous

23-Sep-05 1:04

Hello guys,

Hope you can help me ....

I wrote a Dialog MFc Application, I use a TreeControl for displaying hiearachical item.

I want to use a contextmenu for each item (Actually I put the menu on the dialog OnInitMenuPopup() event) but the menu is not display !!!

Only a little band on the writeis display ? What can i do for getting a working context menu ??

Thanks in advance

Re: Context menu in TreeView control ??

khan++23-Sep-05 1:27

khan++

23-Sep-05 1:27

There is an event for the TreeCtrl.
NM_RCLICK
You need to handle this notification message.

To show the context menu on it:

CMenu m;<br />
CMenu* p;<br />
m.LoadMenu(IDR_MENU1); //menu id here.<br />
p = m.GetSubMenu(0);<br />
CPoint pt;<br />
GetCursorPos(&pt);<br />
p->TrackPopupMenu(0,pt.x,pt.y,this,NULL); //have a look at the first parameter of this function. Use the correct parameters.

this is this.

Re: Context menu in TreeView control ??

Anonymous23-Sep-05 23:09

Anonymous

23-Sep-05 23:09

Does not work at all !!!

MDI without initial window

tooho23-Sep-05 1:01

tooho

23-Sep-05 1:01

Hello,
I would like my MDI application to start without any doc/view window. How do I do that? I've tried to override OnCreateClient in ChildFrm but that only generates a message box that says "Failed to create empty document".

Thanks...

Re: MDI without initial window

prasad_som23-Sep-05 1:56

prasad_som

23-Sep-05 1:56

Change your CWinApp::InitInstance function.

// Parse command line for standard shell commands, DDE, file open
	CCommandLineInfo cmdInfo;
	ParseCommandLine(cmdInfo);
	cmdInfo.m_nShellCommand=CCommandLineInfo::FileNothing;//Add This line
	// Dispatch commands specified on the command line
	if (!ProcessShellCommand(cmdInfo))
		return FALSE;

Insert line in bold in code before ProcessShellCommand

Re: MDI without initial window

vikas amin23-Sep-05 1:57