C / C++ / MFC Discussion Boards

Re: How to activate view in splitter Frame

super18-Dec-02 19:45

18-Dec-02 19:45

Well Ur sugession was Good and it solved the problem of doing Tree operation..
Now i just have a small hiccup...
When During Find if i find the correct node then i have to activate the right view...But the problem is Onselchange event is not firing if i call

<br />
treectrl->SelectItem(hItem)<br />

after reseting the flag.....Even if i PostMessage(TVN_SELCHANGE) also..No use..
So... any idea

cheers,
Super
------------------------------------------
Too much of good is bad,mix some evil in it

Re: How to activate view in splitter Frame

Jeff J19-Dec-02 9:22

Jeff J

19-Dec-02 9:22

When you say you need to "activate" the right view, do you mean you have to fill it with information, or that you have to set the focus on it, or both? I do not know what kind of control(s) you have in the right view, but it should be possible to fill the controls with information, and yet avoid moving the focus to a control in the right view.

Re: How to activate view in splitter Frame

super19-Dec-02 17:10

super

19-Dec-02 17:10

I want to Display the Right side view For the corresponding Node..So it means I have to Fill the Right side view with the data's....
My class will handle the filling if i can just display the Right side view.
Im handling the Filling of data in the InitialUpdate of that View class..
So I just have to fire that OnSelchanged() event in the tree..

cheers,
Super
------------------------------------------
Too much of good is bad,mix some evil in it

Re: How to activate view in splitter Frame

Jeff J19-Dec-02 21:38

Jeff J

19-Dec-02 21:38

Hmmm... I assume you verifed that manually selecting a node with the mouse fires OnSelchanged(), so this is puzzling. Did you check if hItem is valid? Is it possible that OnSelchanged() is being called, but that it is not doing what you need? I also assume you sent the TVN_SELCHANGED message within a WM_NOTIFY message (with the NMTREEVIEW and NMHDR structures filled-in validly), and that it was sent to the window that owns the treeview.

Forgive me, but I usually find it is the tiniest mistakes that cause such problems, which are often missed the first time the code is checked. It is hard to guess without seeing the actual code...

How can I set or change in global printer setting (Again) ?

AhMan18-Dec-02 15:51

AhMan

18-Dec-02 15:51

(I'm sorry to post it again but I'm in a hurry. I'd like to know how I do that?)

I want to modify or set global printer setting.

1) Enter to Control_Panel -> Printer
2) right click on printer list and change setting

but I want to set from visual c++

How can I do that ?

Thank in advanced for your kindness

Re: How can I set or change in global printer setting (Again) ?

Christian Graus18-Dec-02 16:18

Christian Graus

18-Dec-02 16:18

I've been to CodeGuru, I feel dirty. Google was how I found this link:

http://www.codeguru.com/printing/SetPrinter.shtml[^]

Christian

No offense, but I don't really want to encourage the creation of another VB developer.
- Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael
P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not
as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

Re: How can I set or change in global printer setting (Again) ?

AhMan18-Dec-02 21:38

AhMan

18-Dec-02 21:38

I want to change properties in global printer setting. I don't want to change default printer.

Please help me

Thanks in advanced

Re: How can I set or change in global printer setting (Again) ?

Christian Graus18-Dec-02 21:40

Christian Graus

18-Dec-02 21:40

What does 'global printer setting' mean ?

Christian

No offense, but I don't really want to encourage the creation of another VB developer.
- Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael
P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not
as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

Re: How can I set or change in global printer setting (Again) ?

AhMan18-Dec-02 22:00

AhMan

18-Dec-02 22:00

Hi again

I want to print from a command line program like this
C:\print_job.exe "My Printer" job_file

so the command line program will print that use global printer setting (system printer setting)

the meaning of global printer setting is something like this

1) Enter to Control_Panel -> Printer
2) right click on printer list and change setting

Please help me

Thank you so much for your kindness

Re: How can I set or change in global printer setting (Again) ?

Christian Graus18-Dec-02 22:51

Christian Graus

18-Dec-02 22:51

What you're saying makes no sense. ALL printers are visible globally, if you have more than one then one must be the default, and there fore the one you print with. You want to change things like which pages you print and the page alignment ? The CPrintDialog does that, I am sure.

Christian

No offense, but I don't really want to encourage the creation of another VB developer.
- Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael
P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not
as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

Re: How can I set or change in global printer setting (Again) ?

AhMan18-Dec-02 23:34

AhMan

18-Dec-02 23:34

Hi again and again

More detail:

I have some limitation this

1) I have C:\print_job.exe in binary file so I can't modify print dialog that you mention it above

2) so if I run command c:\print_job.exe "My Printer" job_file. It'll print to "My Printer" and use global "My Printer" setting

3) so I must write another application to motitor print_job.exe process and check paper_size on job_file and then modify global "My Printer" setting

4) I try to use OpenPrinter , DocumentProperties and SetPrinter but It doesn't work. I can't set paper size to printer setting
I try level 2 (Printer_info_2) , level 8 (Printer_info_8) and level 9 (Printer_info_9). It doesn't work all

Am I miss understanding (windows printer concept) ?
How could I do ?

Please help me

Thank you so much for your kindness

AhMan Smile | :)

Re: How can I set or change in global printer setting (Again) ?

Christian Graus18-Dec-02 23:48

Christian Graus

18-Dec-02 23:48

AhMan wrote:
I have C:\print_job.exe in binary file so I can't modify print dialog that you mention it above

It's a class, you create it and set the options you want. You don't need to interact with a window.

AhMan wrote:
global "My Printer" setting

ARGH !!!!! There is NO global printer setting !!!! The ONLY thing you can mean here is the default printer.

AhMan wrote:
check paper_size on job_file and then modify global "My Printer" setting

You want to modify the page size for a print job, there is nothing global about it.

AhMan wrote:
Am I miss understanding (windows printer concept) ?

Yes.

Christian

No offense, but I don't really want to encourage the creation of another VB developer.
- Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael
P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not
as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

ActiveX method return value question

work_to_live18-Dec-02 13:08

work_to_live

18-Dec-02 13:08

Just starting to "fool around" with ActiveX controls...

Is it possible for a method to return a pointer to an object? The only ActiveX return type I see that looks reasonable to use is LPUNKNOWN, but I run across all kinds of problems when trying to use it. I'll keep researching, and reading about methods, but if someone can point me in the right direction, I'd appreciate it.

For the sake of discussion, assume my ctrl class has a member variable of...
CMyClass *testptr;

CMyClass has been dynamically allocated in the ctrl, and I want the container to have access to it. Is this possible, or is it a violation of ActiveX design standards?

Thanks.

Re: ActiveX method return value question

Nitron18-Dec-02 13:41

Nitron

18-Dec-02 13:41

Most of the third party ActiveX components I work with return VARIANT, whuch I then access it's particular data member and then cast it to the proper data type. I think this is mainly for compatibility with, well... *whispers* vb Suspicious | :suss:

- Nitron

"Those that say a task is impossible shouldn't interrupt the ones who are doing it." - Chinese Proverb

Re: ActiveX method return value question

C^hris L^osinger18-Dec-02 14:07

C^hris L^osinger

18-Dec-02 14:07

work_to_live wrote:
Is this possible, or is it a violation of ActiveX design standards?

it's bad design. the proper way is to expose a bunch of get/set or property members that operate on CYourClass. 1. in general, you can't be sure that the container is a C++ app (maybe in a limited use sense you can, but in general it's a bad assumption) 2. you can't assume your object will even be in the same memory space as the container (same assumption as above).

-c

Please stand by

ThumbNailer

Re: ActiveX method return value question

work_to_live18-Dec-02 15:32

work_to_live

18-Dec-02 15:32

Point well taken... More specifically, what I want to do is make an array of chars available to the container. As I mentioned before, I'm just starting to look into ActiveX, so my questions obviously expose my inexperience. Continuing with your suggestion, how would you expose an array of chars to a container? BTW, I'm using Visual Studio 6.0, and after doing some research, found that there is a valid return type of byte * that was in error left out of the VS products. Oh well, I'll continue my... studies tomorrow.

Re: ActiveX method return value question

C^hris L^osinger18-Dec-02 16:20

C^hris L^osinger

18-Dec-02 16:20

work_to_live wrote:
how would you expose an array of chars to a container?

i think a SAFEARRAY is the standard way of doing this. if it's just an array of chars, you might also be able to sneak it in with a BSTR, but that's not polite.

-c

Please stand by

ThumbNailer

Re: ActiveX method return value question

work_to_live19-Dec-02 7:36

work_to_live

19-Dec-02 7:36

I tried the impolite method, since it seemed more straight forward, and I wanted to make some headway... Smile | :)

But it may have bitten me.

As I mentioned before, I have a method that wants to return some binary data to a container. The method was created with a return type of BSTR. Here's the last few lines of code that I used to copy the char[] into the BSTR...

// fill a BSTR with the char array
(p_allchars is a pointer to a binary character array)
(totalchars = the number of chars to copy)
BSTR bStr = SysAllocStringByteLen(p_allchars,totalchars);
// delete the allchars variable, now that the data is in bStr
delete[] p_allchars;
return bStr;

When I look at the result in MFC's Control Test Container, it's garbage. I think I misused SysAllocStringByteLen, but I'm not sure. Any hints?

I'm getting an uneasy feeling that I need to read up on UNICODE and related operations...

PAUSE!!!!!!!!!

Lucky200218-Dec-02 12:55

Lucky2002

18-Dec-02 12:55

hello,

i want to make a real 'break' ('pause') in my mfc program. the program should wait one or two seconds and then it should go on.
how can i do it ?

lucky

Re: PAUSE!!!!!!!!!

Tim Smith18-Dec-02 13:02

Tim Smith

18-Dec-02 13:02

::Sleep will work just fine. You MFC program won't even process any window messages. (In other words, it will seem to be locked up to the user.)

Tim Smith

I'm going to patent thought. I have yet to see any prior art.

Re: PAUSE!!!!!!!!!

Sunnygirl18-Dec-02 13:14

Sunnygirl

18-Dec-02 13:14

sounds cool. i tried something like

sleep(1000);

but it do not work. (error: program does not know 'sleep')
sorry, but i have no msdn here. how must i use 'sleep'?

sunny

Re: PAUSE!!!!!!!!!

Christian Graus18-Dec-02 13:22

Christian Graus

18-Dec-02 13:22

I believe the S is capitalised, as it was in the example given. 1000 equals one second.

An alternative is the user a timer, but Sleep will do what you want in this instance. A timer will allow your program to keep doing something while it 'waits' for the passage of time.

Christian

No offense, but I don't really want to encourage the creation of another VB developer.
- Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael
P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not
as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

Re: PAUSE!!!!!!!!!

Lucky200218-Dec-02 13:37

Lucky2002

18-Dec-02 13:37

yes, the S is capitalised.

the sleep is working fine, but i need something else:

the program should only wait, but stop working not completely.
the previous works are to be processed and then the program should go on. unfortunately it is not requestable, whether that the processes completely finished before, thereforei needs a pause, which does not freeze everything.

what can i do? Unsure | :~

lucky

Re: PAUSE!!!!!!!!!

Christian Graus18-Dec-02 13:43

Christian Graus

18-Dec-02 13:43

Ah - then Tim's answer was correct, but your question was wrong. You need to do what I said in the last post, set up a timer. I forget the syntax but if you look up WM_TIMER in MSDN you should have no trouble finding it. It's something *like* SetTimer(42, 2000, NULL), where 42 is the number that identifies your timer ( and is passed to the WM_TIMER message handler you'll need to set up with the Class Wizard ), 2000 is the number of milliseconds ( so this one waits for two seconds ) and NULL means you're not specifying your own callback for the timer. I also believe the timer will go off over and over again, so you need to KillTimer(42) when you catch it. But my MFC/Win32 days are long behind me, you should verify the details in MSDN.

Christian

No offense, but I don't really want to encourage the creation of another VB developer.
- Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael
P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not
as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

THREAD PROBLEM

Sunnygirl18-Dec-02 12:03

Sunnygirl

18-Dec-02 12:03

hi,

i have a mfc program with a thread:

<br />
DWORD WINAPI ThreadProc (LPVOID pvoid) <br />
{ <br />
while (TRUE) <br />
{<br />
....<br />
} <br />
return 0; <br />
}<br />
<br />
void CDialogMe::OnMy()<br />
{<br />
DWORD WINAPI ThreadProc (LPVOID pvoid);<br />
HANDLE hThread; <br />
DWORD ThreadParam = 1;<br />
DWORD ThreadNr;<br />
hThread = CreateThread (NULL, 0, ThreadProc, &ThreadParam, 0, &ThreadNr);<br />
....<br />
}

but it do not work. what´s wrong????

sunny

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