Re: How can chk Dialog box is open? - C / C++ / MFC Discussion Boards

Re: How can chk Dialog box is open?

Nibu babu thomas2-Feb-09 18:00

Nibu babu thomas

2-Feb-09 18:00

"_$h@nky_" wrote:
how can i check the dialog is already open or not just before calling DoModal().

If you already have a handle to the window that you are expecting to be open then use functions

1. IsWindowVisible
2. IsWindow - To check validity of window handle

Nibu babu thomas
Microsoft MVP for VC++

Code must be written to be read, not by the compiler, but by another human being.

Programming Blog: http://nibuthomas.wordpress.com

Re: How can chk Dialog box is open?

Le@rner2-Feb-09 18:15

Le@rner

2-Feb-09 18:15

I m alrady try this its gives error of Debug Assertion Failed.

To accomplish great things, we must not only act, but also dream;
not only plan, but also believe.

Re: How can chk Dialog box is open?

Nibu babu thomas2-Feb-09 18:16

Nibu babu thomas

2-Feb-09 18:16

"_$h@nky_" wrote:
I m alrady try this its gives error of Debug Assertion Failed.

Where does it assert?

Nibu babu thomas
Microsoft MVP for VC++

Code must be written to be read, not by the compiler, but by another human being.

Programming Blog: http://nibuthomas.wordpress.com

Re: How can chk Dialog box is open?

Le@rner2-Feb-09 18:21

Le@rner

2-Feb-09 18:21

After clicked on Retry button of debug assertion failed dialog box, its focused on afxwin2.inl
on this line.

_AFXWIN_INLINE BOOL CWnd::IsWindowVisible() const
	{ ASSERT(::IsWindow(m_hWnd)); return ::IsWindowVisible(m_hWnd); }

To accomplish great things, we must not only act, but also dream;
not only plan, but also believe.

Re: How can chk Dialog box is open?

Nibu babu thomas2-Feb-09 18:38

Nibu babu thomas

2-Feb-09 18:38

"_$h@nky_" wrote:
_AFXWIN_INLINE BOOL CWnd::IsWindowVisible() const
{ ASSERT(::IsWindow(m_hWnd)); return ::IsWindowVisible(m_hWnd); }

Call IsWindow before IsWindowVisible since the check for visibility can only be done on a valid window handle.

Should be something like

if( !::IsWindow( m_Dlg.GetSafeHwnd() ))
{
  // Window handle invalid recreate...
  m_Dlg.DoModal();
}
else if( !::IsWindowVisible( m_Dlg.GetSafeHwnd() ))
{
  // Don't know how much this will be useful since modal dialog boxes 
  // are always destroyed on close
  m_Dlg.ShowWindow(SW_SHOW);
}// End if

Nibu babu thomas
Microsoft MVP for VC++

Code must be written to be read, not by the compiler, but by another human being.

Programming Blog: http://nibuthomas.wordpress.com

Re: How can chk Dialog box is open?

Le@rner2-Feb-09 18:49

Le@rner

2-Feb-09 18:49

Its open dialog box again and again i want if dialog box is already open its not open again only show tha previous one.

To accomplish great things, we must not only act, but also dream;
not only plan, but also believe.

Re: How can chk Dialog box is open?

SandipG 2-Feb-09 19:29

SandipG

2-Feb-09 19:29

"_$h@nky_" wrote:
i want if dialog box is already open its not open again only show tha previous one

For this you should create modless dialog and show/hide as required.

Regards,
Sandip.

Re: How can chk Dialog box is open?

Sarath C2-Feb-09 18:20

Sarath C

2-Feb-09 18:20

If it's a single threaded function, the main thread will be blocked if you've already called "DoModal" (which means the window is visible". So you will not be able to execute the any other functions during this period (sure you can get paint messages and some other notifications to your parent window).

In which case, it's required to check the windows is showing or not?

-Sarath.
"Great hopes make everything great possible" - Benjamin Franklin

My blog - Sharing My Thoughts

Re: How can chk Dialog box is open?

_AnsHUMAN_ 2-Feb-09 18:30

_AnsHUMAN_

2-Feb-09 18:30

How about using a flag to detect this?

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

Re: How can chk Dialog box is open? [modified]

Le@rner2-Feb-09 18:32

Le@rner

2-Feb-09 18:32

yes its working with use of flag.
thanks

To accomplish great things, we must not only act, but also dream;
not only plan, but also believe.

modified on Tuesday, February 3, 2009 1:13 AM

Re: How can chk Dialog box is open?

_AnsHUMAN_ 2-Feb-09 19:29

_AnsHUMAN_

2-Feb-09 19:29

Welcome!

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

INI FILE in vc++6

hrishiS2-Feb-09 17:05

hrishiS

2-Feb-09 17:05

Hi everyone there,
I need to make a mapping (two column) in vc++(win32). I was suggested to make an INI file. But i don't have any idea about it, and how to use it in vc++. Could someone pleas help me.

Thanks in advance

I am a learner Always

Re: INI FILE in vc++6

Sarath C2-Feb-09 18:16

Sarath C

2-Feb-09 18:16

YOu can use PrivateProfile Set/Get functions[^]to manipulate INI files. Please note that INI file formats are deprecated. If possible to switch to XML file format.

-Sarath.
"Great hopes make everything great possible" - Benjamin Franklin

My blog - Sharing My Thoughts

Re: INI FILE in vc++6

hrishiS2-Feb-09 18:19

hrishiS

2-Feb-09 18:19

thanks

I am a learner Always

Re: INI FILE in vc++6

aks.2-Feb-09 18:47

aks.

2-Feb-09 18:47

.INI files contain one or more sections. Each section begins with a section name, which is followed by zero or more entries. An entry associates a keyname with a value. The general format is:

[section]
keyname=value

Use GetProfileString()to retrieves the string associated with a key in the specified section of the ini file.
http://msdn.microsoft.com/en-us/library/ms724366(VS.85).aspx[^]

aks

Re: INI FILE in vc++6

hrishiS2-Feb-09 19:01

hrishiS

2-Feb-09 19:01

thanks aks
where can I get information for ace message queue of ace framework....I wanted a simple message quque for my application...please help
Thanks

I am a learner Always

Re: INI FILE in vc++6

aks.2-Feb-09 22:13

aks.

2-Feb-09 22:13

just google.... u can find many links

http://www.huihoo.org/ace_tao/ACE-5.2+TAO-1.2/ACE_wrappers/docs/index.html[^]

The Ace Programmer’s Guide by Stephen D. Huston

aks

Re: INI FILE in vc++6

Hamid_RT3-Feb-09 20:37

Hamid_RT

3-Feb-09 20:37

For ini files you can see How to read and write an INI File. Free source code ...[^]

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

winapi on mobile device

johntoschack2-Feb-09 12:02

johntoschack

2-Feb-09 12:02

I've got a question about programming for mobile devices in winapi. Is that possible to check if a mobile device like pocket PC or palmtop was connected to ActiveSync? I mean I need a code that will catch an event when the connection is established and active sync notifys about that.

I'm using WinAPI, VS 2005 SP1, Windows Mobile 6.1

Re: winapi on mobile device

«_Superman_»2-Feb-09 16:23

«_Superman_»

2-Feb-09 16:23

I believe CeRapiInit is what you're looking for.

«_Superman_»

Re: winapi on mobile device

johntoschack2-Feb-09 21:00

johntoschack

2-Feb-09 21:00

thanks, but I'm afraid it's only for PC side notification
rapi.h does not exist on the device's API...

Slow Vista Drawing

Koolski2-Feb-09 8:42

Koolski

2-Feb-09 8:42

Hello All,

I have a large legacy application that I will soon be updating with some new development. The new features will require a fair amount of owner draw stuff. My concern is that some of the application's current owner draw stuff runs slowly on Vista. Win2K and WinXP run great. I'm not sure what's causing the slowness on Vista, but I want to figure it out before the new development. I'm not sure whether it's poor programming (although it seems pretty adequate to me) or whether I need to swap out all the pDC->MoveTo() pDC->LineTo() etc... for some other methodology or switch to a Directx equivilent or something. I'm developing in Visual Studio 2003 so perhaps upgrading to VS2008 would fix the problem?

Anyone have any similar experience? Any thoughts?

Thanks in advance.

Re: Slow Vista Drawing

Sarath C2-Feb-09 16:58

Sarath C

2-Feb-09 16:58

Windows Vista graphics subsystem is designed to work with Direct3D. Existing graphics interfaces, such as GDI, GDI+, and older versions of Direct3D are still supported in Windows Vista, but are internally remapped where possible. So you will surely experience a performance hit. To compromise these things, you need high performance hardware.

The operating system itself using lot of resources and running many background services than Windows XP. You need to have better computer components than previous. If your application is drawing intensive, you may need a good graphics card as well.

Direct2D [^]is a new technology which is being developed by Microsoft to replace GDI and GDI+. It's currently supported in Windows 7 and it will be the future of 2D Drawing.

Check Tim Anderson's Performance test [^]with Windows XP and Vista

-Sarath.
"Great hopes make everything great possible" - Benjamin Franklin

My blog - Sharing My Thoughts

Re: Slow Vista Drawing

Koolski3-Feb-09 1:27

Koolski

3-Feb-09 1:27

Thanks Sarath. These are quite helpful. Tim Anderson's article seemed to be expressing exactly what I have experienced. Since customers will be getting this software, I can't demand they upgrade their hardware so I will look into the Direct2D.

Thanks again.

Re: Slow Vista Drawing

Koolski3-Feb-09 4:07

Koolski

3-Feb-09 4:07

It occurs to me -- what's the support for Direct2D in Vista, XP and Win2K? Do you have any idea about this?

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