Re: putting in leading spaces - C / C++ / MFC Discussion Boards

jimNLX9-Oct-02 6:08

9-Oct-02 6:08

is there a way to stop this from open when a certain condition is met?

I'm trying to do this in the OnDropdown section of code and anything I do dosen't stop the dropdown from opening.

Thanks for your help,

Jim

Re: OnDropdown NOT!

Maximilien9-Oct-02 6:15

Maximilien

9-Oct-02 6:15

I assume it's for a combox box, why can't you just disable the control ?
the OnDropDown is the callback.
Max.

Re: OnDropdown NOT!

jimNLX9-Oct-02 6:26

jimNLX

9-Oct-02 6:26

Here is what the code looks like. I couldn't find anything that would just quite without displaying that drop down.

void CAMID::OnDropdownMSel()
{
CComboBox *pMSelBox = (CComboBox *) GetDlgItem(IDC_MISSION_SEL);

if(HostStruct.bFreeze == false)
{//warn user...and quit dropdown
MessageBox("blah blah blah", "Warning!", MB_OK);

}
else
{
//drop down box
}

putting in leading spaces

ns9-Oct-02 5:59

9-Oct-02 5:59

I have strings (numeric) of various lengths:

"123"
"2345"
"5"
"99999"
etc. I need to make them all as long as the longest one "99999", so they should look like "00123", "00005", etc.

If these strings are stored in an array A[], then how can I do this padding? I will be knowing the biggest strings length.
I need to automate this process.

for ( int i = 0; i

Re: putting in leading spaces

jmkhael9-Oct-02 6:05

jmkhael

9-Oct-02 6:05

use CStrings if u can

CString urString;

in the loop:

urString = a [i];
CString t( '0', numberOfSpaceNeeded ); 
t += urString;

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: putting in leading spaces

ns9-Oct-02 6:11

9-Oct-02 6:11

Amazing! Thanks! I didnt know CString had such a handy constructor..... Smile | :)

Appreciate your help,
ns

Re: putting in leading spaces

Maximilien9-Oct-02 6:25

Maximilien

9-Oct-02 6:25

You could format the number with the approprite lenghth

CString aString;
aString.Format( "%7i", 123 ); // where the string will have a lenght of 7 chars.

Re: putting in leading spaces

Joe Woodbury9-Oct-02 7:00

Joe Woodbury

9-Oct-02 7:00

Maximilien wrote:

CString aString;<br /> aString.Format( "%7i", 123 ); // where the string will have a lenght of 7 chars.

You forgot the zero:

aString.Format("%07i", 123);

Re: putting in leading spaces

Maximilien9-Oct-02 7:10

Maximilien

9-Oct-02 7:10

yep!

Thanks.

member in thread procedure

stevenson9-Oct-02 5:33

stevenson

9-Oct-02 5:33

I write a class which kicks off a thread in constructor and terminated it in destroyer. This thread has a message queue, and in the switch-case, calls the class' member functions or member variables. And so far, I got the following reward WTF | :WTF:

:

illegal call of non-static member function

In my point of view, It's reasonable to use massage queue to manage member functions and member variables. it sounds good but I kick a stone, tell me why and how to make a difference.

Thanks

Extreme programming. Do the No.1

Re: member in thread procedure

C^hris L^osinger9-Oct-02 5:44

C^hris L^osinger

9-Oct-02 5:44

a thread function (the one that you use to start the thread) cannot be a member function of a class, unless that function is static.

-c

Support regime change. Vote.

Etch-a-sketch!

Re: member in thread procedure

stevenson9-Oct-02 5:56

stevenson

9-Oct-02 5:56

why??? why must be static? u mean serval instances have only one thread function? then once again, how to call a member funtion in a thread function?

What's happening in backyard?

thanks

Extreme programming. Do the No.1

Re: member in thread procedure

C^hris L^osinger9-Oct-02 6:12

C^hris L^osinger

9-Oct-02 6:12

stevenson wrote:
why??? why must be static?

the thread proc can't be a non-static member function because there is no way to provide the "this" pointer to provide an object context for that member function to be called from. it's like this:

int i = CString::GetLength();

GetLength makes no sense without an actual CString object. a static member function doesn't require an actual object instance, so you can use it as a thread proc.

you can pass an object into the thread proc and use it indirectly:

volatile dataStruct data; 
data.pMyObject = &TheObjectIWantToUse;
AfxBeginThread(ThreadProc, (void *)&data, THREAD_PRIORITY_NORMAL, 0, CREATE_SUSPENDED);

...

UINT ThreadProc(void *p)
{
   dataStruct *pData = (dataStruct *)p;

   now you can use pData->pMyObject;
}

-c

Support regime change. Vote.

Etch-a-sketch!

Closing hh.exe when my programs exits.

oRion9-Oct-02 5:32

oRion

9-Oct-02 5:32

Hi,
I have launch the hh.exe ( help viewer) via CreateProcess(). I am trying to close this window when my main program exits. How do I do that?

Here's a snip of my code...

bSuccess = CreateProcess ("C:\\WINDOWS\\HH.EXE"," NATURAL.CHM",
NULL, NULL, TRUE, NORMAL_PRIORITY_CLASS,
NULL, NULL, &si, &ppi );
helphnd = ppi.hProcess;
CloseHandle ( ppi.hThread );
CloseHandle ( ppi.hProcess );

The code is written as part of defining a 'Help' menuitem. Quite new to the idea of process, copy this idea from FAQ in this website. If CloseHandle is executed right after CreateProcess, that means the process should have finish and return to the executing program, therefore closehandle would do the cleaning up? Now, I am executing something in the ::OnCloseDocument(), how do I check whether the help program is still running,so that I wouldn't be trying to close the program? Unsure | :~

Re: Closing hh.exe when my programs exits.

Todd Smith9-Oct-02 5:58

Todd Smith

9-Oct-02 5:58

unsigned long status;
int rv = GetExitCodeProcess(ppi.hProcess, &status);

Todd Smith

Re: Closing hh.exe when my programs exits.

oRion10-Oct-02 3:57

oRion

10-Oct-02 3:57

THanks for the reply. It's this function just checking whether the process is closed? How to close the process then?

Re: Closing hh.exe when my programs exits.

Todd Smith10-Oct-02 7:02

Todd Smith

10-Oct-02 7:02

First try to get a handle to the main window and then do a SendMessage with WM_CLOSE. If that doens't work then try TerminateProcess. See http://www.codetools.com/threads/asyncprocnotify.asp[^]

Todd Smith

CListCtrl and InsertItem

ns9-Oct-02 5:35

9-Oct-02 5:35

Looks like we can only insert strings, so if i want to put in ints or floats, so I have to first atoi, atof them before inserting them? ?

Appreciate your help,
ns

Re: CListCtrl and InsertItem

Chris Hambleton9-Oct-02 6:39

Chris Hambleton

9-Oct-02 6:39

Correct, but you need itoa or ltoa (ints to strs), not atoi (strs to ints)...

Not sure if there's a ftoa, so you may need to do an sprintf() or something similar...

Chris

"If at any time I announce that a nation or kingdom is to be uprooted, torn down and destroyed, and if that nation I warned repents of its evil, then I will relent and not inflict on it the disaster I had planned. And if at another time I announce that a nation or kingdom is to be built up and planted, and if it does evil in my sight and does not obey me, then I will reconsider the good I had intended to do for it." -- Jeremiah 18:7-10 (God, commenting on the value of the United Nations)

CWnd::FindWindow()

Cris9-Oct-02 5:03

Cris

9-Oct-02 5:03

Hi,
It's possible to find a window by a incomplete name ??

Ex.: Finding a window that has the name "App Test", ::FindWindow ("App Tes?")

Other thing: How find a window by a class name ??

[]'s
Cris.

Re: CWnd::FindWindow()

Hans Ruck9-Oct-02 5:16

Hans Ruck

9-Oct-02 5:16

Cris wrote:
How find a window by a class name ?

According to MSDN, you should call FindWindow with lpszWindowName set to NULL.

rechi

Re: CWnd::FindWindow()

Cris9-Oct-02 5:32

Cris

9-Oct-02 5:32

But how I get the class name ??
I am using a dialg based app, how I registry the class name ??

Re: CWnd::FindWindow()

Hans Ruck9-Oct-02 5:40

Hans Ruck

9-Oct-02 5:40

Cris wrote:
how I registry the class name ?

This should be too complicated. Study RegisterClassEx for it.

Cris wrote:
But how I get the class name ??

Use Spy++.

rechi

Re: CWnd::FindWindow()

Carlos Antollini9-Oct-02 5:14

Carlos Antollini

9-Oct-02 5:14

You can use ::GetWindow() that will returns the HWND of the window, then you can use ::GetWindowText

Regards

Carlos Antollini.
Sonork ID 100.10529 cantollini

Re: CWnd::FindWindow()

jmkhael9-Oct-02 6:40

jmkhael

9-Oct-02 6:40

Can u enumerate all the windows (and child windows if needed) and get the text in the window, and check if u can find ur text in it??
see EnumWindows and strstr or CString::Find

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

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