Combo Box Control. - C / C++ / MFC Discussion Boards

Hadi Rezaee9-Sep-02 6:41

9-Sep-02 6:41

Hi there,
I wrote this code for changing windows background color, it works fine in Win98 but it doesn't wrok on WinXP and Win2000 !

HBRUSH CSearchDialog::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

switch(nCtlColor)
{
case CTLCOLOR_DLG:
{
CBrush brush(RGB(0, 30, 104));
pDC->SelectObject(brush);
pDC->SetBkMode(TRANSPARENT);
return (HBRUSH)brush.GetSafeHandle();

}

case CTLCOLOR_STATIC:
{
}

case CTLCOLOR_EDIT:
{
}

}

return hbr;
}

What's wrong ???
Please help me !

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Re: Changing dialog background color ...

Joaquín M López Muñoz9-Sep-02 6:46

Joaquín M López Muñoz

9-Sep-02 6:46

{
CBrush brush(RGB(0, 30, 104));
pDC->SelectObject(brush);
pDC->SetBkMode(TRANSPARENT);
return (HBRUSH)brush.GetSafeHandle();
}

Since brush is defined in the local scope, it gets destroyed as soon as the function exists. I'd say it's merely a matter of luck that this works in Win98. Instead, make brush a member variable of CSearchDialog and initialize it only once (for instance, in the constructor for the dialog).

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Changing dialog background color ...

Hadi Rezaee9-Sep-02 6:53

Hadi Rezaee

9-Sep-02 6:53

Hello dear López Smile | :)

Ans thanks alot for your helps, now it works fine Wink | ;)

Best Regards, Rose | [Rose]

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Re: Changing dialog background color ...

Joaquín M López Muñoz9-Sep-02 7:03

Joaquín M López Muñoz

9-Sep-02 7:03

Hello dear López

Just call me Joaquín (or Joaq, as Nish prefers to put it) Smile | :)

Ans thanks alot for your helps, now it works fine

Glad to be helpful.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Get refresh rate (frequency) of current display mode under Win9x?

FatBastardDelivery9-Sep-02 5:46

FatBastardDelivery

9-Sep-02 5:46

Hi!

I know that this is not the first time this question is asked, but I don´t found a solution yet so I hope someone in here is able to help me.

Problem is: With the standart MFC functions I can´t get the refresh rate of the display device under Win9x (Win98 and ME is important), neighter the current, nor all avaible.
Under WinNT and above all is fine. EnumDisplaySetting or GetDeviceCaps in "Normal" Mode or the equals in DirectX Mode returns all Values correct, but under Win9x only a Zero or 1 comes back.

Question: How can I get the value? Anybody knows other ways? I know it is possible (look at MultiRes or QuickRes but these are not OpenSource Frown | :(

).

Bye FatBastard

Animated GIF !!!

Hadi Rezaee9-Sep-02 5:25

Hadi Rezaee

9-Sep-02 5:25

Hello there,
Is there any tutorial and class for loading animated gif ???

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Re: Animated GIF !!!

C^hris L^osinger9-Sep-02 5:47

C^hris L^osinger

9-Sep-02 5:47

when you come to the CP main page, there is a list of categories down the left side of the page. one of those categories is "Bitmaps and Palettes". if you click that, you'll find many different classes that will do this.

-c

"Kate said / The flowers of intolerance and hatred / Are blooimg kind of early this year / Someone's been watering them.
-- Robyn Hitchcock, Devil's Radio

Combo Box Control.

arthivjii9-Sep-02 5:22

arthivjii

9-Sep-02 5:22

Hi,
I have many combo boxes my my dialog based application. I want to a combobox to loose focus, when the user clicks outside the combobox. The user should be able to click anywhere in the dialog (not necessarily on another control.) and the combobox should loose focus.
Please help me in this regard.
Confused | :confused:

Arthi

Re: Combo Box Control.

.dan.g.9-Sep-02 14:18

.dan.g.

9-Sep-02 14:18

try handling WM_LBUTTONDOWN in the parent dialog class and calling SetFocus() on the dialog.

if SetFocus() doesn't work (dialogs can be a bit funny) then try sending WM_KILLFOCUS to the control with the focus.

How to get notified when netowrk connection up or down?

Anonymous9-Sep-02 5:06

Anonymous

9-Sep-02 5:06

Hi all,
I need to get notification when the network link up or down.
is there any way to do it?
did any one know how the windows system know this and display a message at the coner of the screen when link up or down?

Thanks a lot.

Re: How to get notified when netowrk connection up or down?

Stephane Rodriguez.9-Sep-02 5:12

Stephane Rodriguez.

9-Sep-02 5:12

May be that's a dumb answer from me, but you can show a blinking systray icon for the network link just by checking a box in the Network settings.

MS quote (http://www.microsoft.com/ddk) : As of September 30, 2002, the Microsoft® Windows® 2000 DDK, the Microsoft Windows 98 DDK, and the Microsoft Windows NT® 4.0 DDK will no longer be available for purchase or download on this site. Support for development will ship at the same time as the Windows XP Service Pack 1 (SP1) release.

Re: How to get notified when netowrk connection up or down?

Alwin759-Sep-02 5:39

Alwin75

9-Sep-02 5:39

Hi ano,

take a look at the System Event Notification Service (SENS), and especially
the ISensNetwork interface. I believe there is an article about this in a recent Dr. Dobbs, or search the Microsoft site.

Bye,

Alwin

Re: How to get notified when netowrk connection up or down?

Anonymous9-Sep-02 5:49

Anonymous

9-Sep-02 5:49

Hi Alwin,
I've read the SENS article. it works fine with dialup line. but augly with LAN. it seems the desktop network connection link up/down message is not from SENS

Did you know other info?

Thanks.

Re: How to get notified when netowrk connection up or down?

Alwin7510-Sep-02 2:54

Alwin75

10-Sep-02 2:54

Hi,

It turned out that I did not read the article in Dr. Dobbs but in MSDN, which
is available electronically here.

The article indicates that SENS does not work well for what you want to do but describes an alternative using WMI (Windows Management Instrumentation) that might help you.

Regards,

Alwin

How to embed the data in program while compile?

ooosawaddee39-Sep-02 5:01

ooosawaddee3

9-Sep-02 5:01

I want to ask like this below example?
Example :
If there are 3 people , all of them have text file name “1.txt”.

If Mr. A has data X in text file like this
X = POIR
Mr. B has data X in text file like this
X = JUKFDSSA
Mr. C has data X in text file like this
X = OYTGF

I want to embed this data in program while compile.
Example: If I use text file of Mr.A I will have data X = POIR after compile program. If I use text file of Mr.B I will have data X = JUKFDSSA after compileprogram.

If my program is in directory C:\ .
Where I need to put “1.txt” file and how to write program to do that .

Thank you.

Re: How to embed the data in program while compile?

C^hris L^osinger9-Sep-02 5:04

C^hris L^osinger

9-Sep-02 5:04

can you could just put the text into a const char * variable?

when you write your text file, make it look like this:

---begin (cut here)
const char *pTheTextFile = "JUKFDSSA";
---end (cut here)

... and call it "MyText.cpp" (or whatever) and add it to your project. then just rewrite it when you want to add the other person's data.

-c

"Kate said / The flowers of intolerance and hatred / Are blooimg kind of early this year / Someone's been watering them.
-- Robyn Hitchcock, Devil's Radio

Help

Anonymous9-Sep-02 4:45

Anonymous

9-Sep-02 4:45

I have a big problem and i must finish this work:
send and receive some bitmap.
The solution?
Thanks

Re: Help

Anders Molin9-Sep-02 4:54

Anders Molin

9-Sep-02 4:54

Oh please, you have been talking about sending this bitmap for several days now. I remember a few days ago someone actually wrote some nice code, in a reply to your question.
Have you been looking at that?

I don't think you get anyone to write a complete program for you, by asking the same question every day.

- Anders

Money talks, but all mine ever says is "Goodbye!"

How do I handle "enter" key in a listbox?

fferland9-Sep-02 4:41

fferland

9-Sep-02 4:41

I have a dialog with two listboxes in it. I want my listboxes to do something when the "enter" key is pressed. The LBN_* messages listed in the ClassWizard are of no help. I tried responding to WM_KEYUP/DOWN messages from the parent dialog, but the didn't work either. How can I know when the user hits "enter" from a listbox?

Re: How do I handle "enter" key in a listbox?

[James Pullicino]9-Sep-02 5:17

[James Pullicino]

9-Sep-02 5:17

Try handling OnKeyDown (sorry, I forgot the actual message define)

Drinking In The Sun
Forgot Password?

Re: How do I handle "enter" key in a listbox?

Alwin759-Sep-02 5:32

Alwin75

9-Sep-02 5:32

Hi there,

I respond to "del" keys in my listviews by handling the KEYDOWN notifications, this solution should also work for listboxes:

In your message map add: (you should use LBN_*)

ON_NOTIFY(LVN_KEYDOWN, IDC_LIST_FILES, OnKeydownListFiles)

Add the handler:

void CUpdateDlg::OnKeydownListFiles(NMHDR* pNMHDR, LRESULT* pResult) <br />
{<br />
	LV_KEYDOWN* pLVKeyDow = (LV_KEYDOWN*)pNMHDR;<br />
	if (pLVKeyDow->wVKey == 46)<br />
	{<br />
		// Delete key pressed<br />
	}<br />
<br />
	*pResult = 0;<br />
}

Hope this helps !

Alwin

Re: How do I handle "enter" key in a listbox?

Tomasz Sowinski9-Sep-02 5:32

Tomasz Sowinski

9-Sep-02 5:32

Override CYourDlg::PreTranslateMessage, check if listbox has the focus and key is Enter, then do whatever you want.

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

Fixed Length Records

crusherwright9-Sep-02 4:27

crusherwright

9-Sep-02 4:27

Hello

I am trying to create a c++ program thats outputs messages to disk in a fixed lenght format i.e after each record the data needs to be padded to 512 bytes before the next record starts.

The part I have trouble with it the padding of the record to 512 bytes can anyone help or point me in the right direction

Thanks
James Wright

Re: Fixed Length Records

Tomasz Sowinski9-Sep-02 4:32

Tomasz Sowinski

9-Sep-02 4:32

Copy the message to 512-byte buffer, then write buffer to disk.

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

Re: Fixed Length Records

crusherwright9-Sep-02 4:35

crusherwright

9-Sep-02 4:35

Sorry I am a bit of a retard when it comes to programming I only started to learn last week.

what command would I use because I need to pad it with hex code 20

Thanks
James

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