C / C++ / MFC Discussion Boards

Re: I would like to know the instruction....

Ta_Tee4739-Aug-02 17:20

9-Aug-02 17:20

I can't find FindFirstFile() and FindNextFile. Please tell me URL that is the example for FindFirstFile() and FindNextFile,.... Thank

Re: I would like to know the instruction....

C^hris L^osinger9-Aug-02 18:11

C^hris L^osinger

9-Aug-02 18:11

here is a C++ wrapper for FindFirstFile/FindNextFile :

http://www.codeproject.com/file/sadirread.asp

but, you can find information about these functions in the MSDN

Conservative:
One who admires radicals centuries after they're dead.
-- Leo C. Rosten

image effects!

Can't figure out these compile errors.

redeemer9-Aug-02 5:58

redeemer

9-Aug-02 5:58

I'm making a list of all the available audio decoders in the system by calling acmDriverEnum, but i get some compile errors that i can't figure out how to get rid of, here's the callback prototype:

BOOL ACMDRIVERENUMCB listCallback(HACMDRIVERID hadid, DWORD dwInstance, DWORD fdwSupport);

and here's the callback function (not finished yet, i just want it to compile):

BOOL ACMDRIVERENUMCB listCallback(HACMDRIVERID hadid, DWORD dwInstance, DWORD fdwSupport)
{
	if (fwdSupport == ACMDRIVERDETAILS_SUPPORTF_CODEC)
	{
		ACMDRIVERDETAILS details;

		acmDriverDetails(hadid, &details, 0);
	}

}

these are the compile errors i get:

<br />
e:\mp3organizer\convertaudio\main.h(5) : error C2146: syntax error : missing ';' before identifier 'listCallback'<br />
e:\mp3organizer\convertaudio\main.h(5) : error C2377: 'ACMDRIVERENUMCB' : redefinition; typedef cannot be overloaded with any other symbol<br />
        e:\program files\microsoft visual studio\vc98\include\msacm.h(250) : see declaration of 'ACMDRIVERENUMCB'<br />
e:\mp3organizer\convertaudio\main.h(5) : fatal error C1004: unexpected end of file found<br />

All help appreciated, thankyou.

Re: Can't figure out these compile errors.

Daniel Lohmann9-Aug-02 6:07

Daniel Lohmann

9-Aug-02 6:07

Without taking a look at the code in MSDN or windows headers, I assume that ACMDRIVEREENUMCB is the typedef for the callback function type. (The type for a pointer to the callback function.)

Try BOOL WINAPI myCallback (HACMDRIVERID hadid, DWORD dwInstance, DWORD fdwSupport) instead of.

--

Daniel Lohmann

http://www.losoft.de
(Hey, this page is worth looking! You can find some free and handy NT tools there Big Grin | :-D

)

Re: Can't figure out these compile errors.

redeemer9-Aug-02 7:13

redeemer

9-Aug-02 7:13

Thankyou! Solved it all!

how to simulate key stroke to directx application?

David High9-Aug-02 5:59

David High

9-Aug-02 5:59

I need to send key strokes to another process, which is a directx exculsion mode program.

I have tried use keybd_event but only the first time is successful. So I guess maybe it will need another way to send keyboard data to the application, maybe fill the keyboard's buffer directly? or something else.

I'm keen to find out the solution. If you have any comment or suggestion, please let me know.

My mail is davihigh@yahoo.com.cn

Thank you!

Re: how to simulate key stroke to directx application?

Paul M Watt9-Aug-02 21:53

Paul M Watt

9-Aug-02 21:53

Are you sending both the key down and key up events?

Because if you are only sending the down event and the DirectX application that you are trying to feed looks at the KeyUp events as well then that would explain why only the first event works.

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

problem MDI child with WNDTOPMOST style

Alexey Kourakolov9-Aug-02 5:59

Alexey Kourakolov

9-Aug-02 5:59

this style doesnot work. But i realize this as determinited in MSDN.
But i have a problem:
When common MDI maximized and i click on "TopMost MDI child window" this window automatic maximized too. How realize this:"TopMost MDI child window" not must maximized.

When i differ WS_MAXIMIZEBOX style to "TopMost MDI child window" i give next situation:
When common MDI maximized and i click on "TopMost MDI child window" common MDI window automatic restored size.
How realize this:Common MDI not must restored.

popup menu text size

jimNLX9-Aug-02 5:56

jimNLX

9-Aug-02 5:56

Is there anyway I can change the size of the text in a popup menu or drop down list?. I would like to make it bigger

Re: popup menu text size

Tomasz Sowinski9-Aug-02 6:06

Tomasz Sowinski

9-Aug-02 6:06

For menu, your only chance is probably owner-drawing. For dropdown list - you'll have to get the listbox (the dropdown portion of combo) and set the font there. AFAIR that combo box gets WM_CTLCOLOR message before dropdown appears - this is your opportunity to get the HWND of listbox.

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

What is "scratch" and why can everything be made from it?

Re: popup menu text size

Shog⁹9-Aug-02 8:03

Shog⁹

9-Aug-02 8:03

Donno about the popup menu, but you can just call SetFont() (MFC; straight Win32 is WM_SETFONT) for the drop-down list. If you only want the actual list portion of the drop-down to have a different font, Tomasz's trick will work nicely as well.

---

Shog⁹
If I could sleep forever, I could forget about everything...

How to tell if a PIDL is for a Drive

Jawache9-Aug-02 5:42

Jawache

9-Aug-02 5:42

Hi,

I have to admit I'm learning Shell Namespaces as I'm going along.

I want to Know how to find out if a PIDL refers to a Drive, the only way I can think of how to do this is to Get the PIDL for MyComputer and Enumerate this then compare all of the SubPIDLS with the PIDL i have.

Is there a simpler method?

Thanks

Asim Hussain
e: asim@jawache.net
w: www.jawache.net

ACM audio compression turorial.

redeemer9-Aug-02 5:29

redeemer

9-Aug-02 5:29

Anyone know a good ACM audio compression turorial?

Thanks in advance.

CD Burning

nlecren9-Aug-02 5:18

nlecren

9-Aug-02 5:18

Anyone know an api call that will allow writing to cdr media. IoControl does not seem to work, i know i can implement what i need with a device driver but am trying to avoid going that route

CListBox scrollbar problem

moobob9-Aug-02 5:15

moobob

9-Aug-02 5:15

I'm having a problem making the horizontal scrollbars appear in a list box in my application. I created it with the dialog editor and have the horizontal & vertical scrollbar boxes checked on the properties dialog. The vertical scrollbar does appear when the enough items are placed in the box. However, the horizontal never appears. i've tried moving controls around to insure their is room for the scroll bars to appear. I've compared the properties to another list box in the application which does display the horiz scroll bars when necessary.

Are there any situations that anyone knows which would cause the scroll bars not to appear in a CListBox?

Thanks in advance,
Bob

Re: CListBox scrollbar problem

Tomasz Sowinski9-Aug-02 5:26

Tomasz Sowinski

9-Aug-02 5:26

AFAIR, horizontal scrollbars work only with multi-column listbox.

If you want to scroll your items horizontally and you have only one column, consider switching to listview control.

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

What is "scratch" and why can everything be made from it?

Re: CListBox scrollbar problem

Ravi Bhavnani9-Aug-02 5:28

Ravi Bhavnani

9-Aug-02 5:28

You need to call CListBox::SetHorizontalExtent(). The value passed in the arg will cause the horizontal scrollbar to appear if it's more than the current width of the scrollbar.

It's nicer to subclass CListBox and override AddItem(), InsertItem() and DeleteItem() so that they recompute the current max length of the list box's strings and call SetHorizontalExtent()themselves.

/ravi

Let's put "civil" back into "civilization"
http://www.ravib.com
ravib@ravib.com

Re: CListBox scrollbar problem

moobob9-Aug-02 9:14

moobob

9-Aug-02 9:14

Thanks! that did the trick.

Bob

Re: CListBox scrollbar problem

Ravi Bhavnani9-Aug-02 10:59

Ravi Bhavnani

9-Aug-02 10:59

Bob, this[^] is what you should be using!

/ravi

Let's put "civil" back into "civilization"
http://www.ravib.com
ravib@ravib.com

Re: CListBox scrollbar problem

Mushtaque Nizamani8-Aug-07 20:52

Mushtaque Nizamani

8-Aug-07 20:52

Ravi Bhavnani wrote:
You need to call CListBox::SetHorizontalExtent(). The value passed in the arg will cause the horizontal scrollbar to appear if it's more than the current width of the scrollbar.

Thanks for that, i have resolved one of my problem.

Best Regards,
Mushq

Mushtaque Ahmed Nizamani
Software Engineer
Ultimus Pakistan

"English is my second language; please excuse any grammatical or spelling mistakes"

Listbox drag and drop

danag9-Aug-02 4:59

danag

9-Aug-02 4:59

How do i implement drag and drop between listboxes? Is there any example program??
Thanks
Dana

Re: Listbox drag and drop

Atlantys9-Aug-02 15:03

Atlantys

9-Aug-02 15:03

Is this what you're looking for?
link[^]

how to but newline character using instance of CString

Birdy9-Aug-02 4:32

Birdy

9-Aug-02 4:32

i am using an instance of CString class and i wana concatenate the strings with a new line character . i am unable to do with a help of "\n" so plz help me as early as possible.

Work Hard and Test your Luck

Re: how to but newline character using instance of CString

dazinith9-Aug-02 4:38

dazinith

9-Aug-02 4:38

"\r" i think..

-dz

Re: how to but newline character using instance of CString

RuiSantiago9-Aug-02 4:45

RuiSantiago

9-Aug-02 4:45

Hi!

You can do it lie this:

CString er="rui\r\n";
CString ff="santiago";
AfxMessageBox(er+ff);

you'll get

rui
santiago

Using \r\n you'll get the line feed.

Hope this helps

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