C / C++ / MFC

Re: How evoke a modal dialog box in a CWinTread Class

13-Nov-07 20:23

Hi can any one tell me how to create a Modal dialog box in CWinThread derived class
Here i can able to create an dialog box but it is acting as an Modeless dialogbox.

VimalKumar.T

Peter Weyzen13-Nov-07 22:05

Peter Weyzen

13-Nov-07 22:05

Is this CWinThread a UI thread?

If not, you probably should post a message to one of your windows -- asking it to open the dialog. ???

Just a thought -- someone else will have an actual answer.

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Re: How evoke a modal dialog box in a CWinTread Class

ThatsAlok13-Nov-07 23:30

ThatsAlok

13-Nov-07 23:30

vethathiri wrote:
Here i can able to create an dialog box but it is acting as an Modeless dialogbox.

Just want to know how do you verify that it is acting as Modeless Dialog box, is debugger goes to next line after DoModal() call ?

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Re: How evoke a modal dialog box in a CWinTread Class

vethathiri15-Nov-07 0:05

Re: How evoke a modal dialog box in a CWinTread Class

15-Nov-07 0:05

I can able to work on the background "mean's i can operate menu items in modal dialog box it cannot be operated"

vethathiri15-Nov-07 0:05

Re: How evoke a modal dialog box in a CWinTread Class

15-Nov-07 0:05

I can able to work on the background "mean's i can operate menu items. in modal dialog box it cannot be operated"

Mark Salsbery14-Nov-07 7:47

Mark Salsbery

14-Nov-07 7:47

If the thread that creates the modal dialog is a different thread than the
thread another window (the main window, for example) was created on,
then of course it's going to behave like a modeless dialog - you have two
threads!

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: How evoke a modal dialog box in a CWinTread Class

Blake Miller16-Nov-07 4:46

Blake Miller

16-Nov-07 4:46

Typically, if I make a window in a separate thread, I do not give it the 'parent' of a window from a different thread. Some of the focus and input looping of a dialog gets mixed up if you do this. If you make a modeless dialog from a separate thread, better to give it the desktop as its parent. Then it and your main window can operate completely independantly of each other. If the modeless is created from same thread as parent, then by all means give it that parent.

How evoke a moda dialog box in a CWinTread Class

vethathiri13-Nov-07 20:23

13-Nov-07 20:23

Hi can any one tell me how to create a Modal dialog box in CWinThread derived class
Here i can able to create an dialog box but it is acting as an Modeless dialogbox.

checkbox caption

subramanyeswari13-Nov-07 20:14

subramanyeswari

13-Nov-07 20:14

how to change the color of caption text for a checkbox?

only coder13-Nov-07 20:57

only coder

13-Nov-07 20:57

WM_CTLCOLOR

subramanyeswari13-Nov-07 21:24

subramanyeswari

13-Nov-07 21:24

Can i use WM_CTLCOLOR in oninitdialog function. I want to set the color of caption text of a checkbox before displaying dialog in VC++.

Nelek13-Nov-07 22:43

Nelek

13-Nov-07 22:43

I think is the best place to use it.

In the constructor you may have error/assertion because the window is not already created so you dont have any possibility to access visual controls, m_hWnd will be NULL and give you problems.

But in OnInitDialog all the objects are already created and it is called the very first time the dialog and its components are shown in the screen.

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error C3861: 'wxStrdupW': identifier not found

ThatsAlok14-Nov-07 3:51

ThatsAlok

14-Nov-07 3:51

subramanyeswari wrote:
Can i use WM_CTLCOLOR in oninitdialog function. I want to set the color of caption text of a checkbox before displaying dialog in VC++.

you have to regularly handle teh OnCtlColor message for coloring the check box, and have to use SetTextColor there!

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

yaminisridaran13-Nov-07 19:35

yaminisridaran

13-Nov-07 19:35

I am using wxWidgets for the first time in vs2005. I have included the necessary directories but I am facing an error->
error C3861: 'wxStrdupW': identifier not found
in buffer.h. I can find the declaration of 'wxStrdupW' in wxchar.h and this header file is already included in buffer.h. But still I am getting this error. Can anyone help me with this

S.Yamini

Re: error C3861: 'wxStrdupW': identifier not found

Peter Weyzen13-Nov-07 22:06

Peter Weyzen

13-Nov-07 22:06

What kind of libraries do you link against?
Is there a UNICODE version to link against?

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br />
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Staff Engineer<br />
<A HREF="http://www.soonr.com">SoonR Inc -- PC Power delivered to your phone</A>

how to use datetime in c programming?

neodeaths13-Nov-07 18:59

neodeaths

13-Nov-07 18:59

hi guys i am trying to use the datetime type in c programming which i have research that i need to include:
#include<time.h>

and the type is
time_t

am i correct? please voice your opinion

Re: how to use datetime in c programming?

Hamid_RT13-Nov-07 19:05

Hamid_RT

13-Nov-07 19:05

See mktime, _mktime32, _mktime64 [^].

Re: how to use datetime in c programming?

neodeaths13-Nov-07 19:23

neodeaths

13-Nov-07 19:23

what if i want to do datetime comparison?
as what i am required to do is to let the user input his/her birthday and output how old he/she is currently.

so i am confuse as in what kinda datetime type i should use and variable.

most tutorial i seen so far only shows how to view the current datetime

Re: how to use datetime in c programming?

David Crow14-Nov-07 3:41

David Crow

14-Nov-07 3:41

neodeaths wrote:
what if i want to do datetime comparison?

You can either compare the individual members of the tm structure, or look at difftime(). If you are using MFC, check out CTimeSpan and COleDateTimeSpan.

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BitMap button

Anu_Bala13-Nov-07 18:56

Anu_Bala

13-Nov-07 18:56

Hi,
In one of my coding,i found the coding for bitmap button in the dialog.
it shows as
//mainfrm.h
public:
CMainFrame();
CSysWindow m_SysWnd;
CBitmapButton bmSCopy;

//mainfrm.cpp
m_SysWnd.SetBarStyle( m_SysWnd.GetBarStyle()| CBRS_ALIGN_TOP|CBRS_BORDER_TOP | CBRS_FLOAT_MULTI );
bmSCopy.AutoLoad(ID_SCOPY,((CWnd* ) ((CDialogBar *)((CSysWindow*)&m_SysWnd)) ) );

I dont know here where the bitmap image is get loaded in the button.

ID_SCOPY is the ID for button.
CSyswindow is CDialogBar class.
ANd it perfectly working.After executing, the button has the bitmap image what i made the image for that particular button.
I dnt know how its get loading.Pls clear me.

Anu

Hamid_RT13-Nov-07 19:13

Hamid_RT

13-Nov-07 19:13

For load bitmaps on the a control of CBitmapButton it uses of LoadBitmaps.

Anu_Bala13-Nov-07 19:17

Anu_Bala

13-Nov-07 19:17

In that coding, i didnot find Loadbitmaps function anywhere.

Anu

only coder13-Nov-07 19:36

only coder

13-Nov-07 19:36

For the button caption “MYIMAGE,” for example, the IDs would be “MYIMAGEU,” “MYIMAGED,” “MYIMAGEF,” and “MYIMAGEX.” You must specify the ID of your bitmaps within double quotes.