C / C++ / MFC

Re: How to place the generated exe(dialogbox) exactly at the center of the desktop...

19-Aug-08 8:35

Hi I know that for setting the dialogbox exe exactly at center we have an option in the properties of the dialogbox as "Center" in "morestyles" tab but i want to set that programatically...
Can anyone suggest me the righ approach for doing that????

Thanks in advance....

led mike19-Aug-08 8:52

led mike

19-Aug-08 8:52

CenterWindow[^]

led mike

Re: How to place the generated exe(dialogbox) exactly at the center of the desktop...

Jijo.Raj19-Aug-08 8:52

Jijo.Raj

19-Aug-08 8:52

Just call CWnd::CenterWindow().

Regards,
Jijo.

_____________________________________________________

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Re: How to place the generated exe(dialogbox) exactly at the center of the desktop...

Perspx19-Aug-08 8:55

Perspx

19-Aug-08 8:55

Find the screen dimensions using GetSystemMetrics() (documentation here) with SM_CYSCREEN and SM_CXSCREEN, then use SetWindowPos() to position the window accordingly Smile | :)

Hope this helps,
--Perspx

"The Blue Screen of Death, also known as The Blue Screen of Doom, the "Blue Screen of Fun", "Phatul Exception: The WRECKening" and "Windows Vista", is a multi award-winning game first developed in 1995 by Microsoft" - Uncyclopedia

Introduction to Object-Oriented JavaScript

Re: How to place the generated exe(dialogbox) exactly at the center of the desktop...

Mark Salsbery19-Aug-08 8:58

Re: How to place the generated exe(dialogbox) exactly at the center of the desktop... [modified]

19-Aug-08 8:58

In response to WM_INITDIALOG (or in an OnInitDialog() override
in MFC) you could do something like this:

// MFC version - you get the idea :)
// Note: Multiple monitors not taken into consideration here
CRect WindowRect;
GetWindowRect(WindowRect);
SetWindowPos(0, (::GetSystemMetrics(SM_CXSCREEN) - WindowRect.Width()) / 2, (::GetSystemMetrics(SM_CYSCREEN) - WindowRect.Height()) / 2, 0, 0, SWP_NOZORDER | SWP_NOSIZE);

Mark

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

Nibu babu thomas19-Aug-08 16:45

Nibu babu thomas

19-Aug-08 16:45

Mark Salsbery wrote:
In response to WM_INITDIALOG (or in an OnInitDialog() override
in MFC) you could do something like this:

But after OnInitDialog MFC does center the dialog, so IMO we don't need to do it again. In the function _AfxPostInitDialog, a check is done to make sure that the dialog does have the center style enabled, if so a call to CenterWindow is done. But above calls will only take place if the user has not by himself repositioned the dialog.

Code looks like this...

if (!pWnd->CheckAutoCenter())
    return;

// center modal dialog boxes/message boxes
pWnd->CenterWindow();

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

modified on Wednesday, August 20, 2008 12:16 AM

Re: How to place the generated exe(dialogbox) exactly at the center of the desktop...

Mark Salsbery20-Aug-08 5:10

20-Aug-08 5:10

Thanks Nibu.

I thought the OP wanted to know a way to actually code it.

The OP also didn't mention MFC as far as I know - that's just the
first code I found to copy/paste, and the method names matched
the equivalent APIs.

I appreciate you pointing that out to me though Smile | :)

Cheers,
Mark

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

Live Messenger

Nathan Going19-Aug-08 7:13

Nathan Going

19-Aug-08 7:13

How does Windows Live Messenger hide its frame like that? You press Alt and it shows. Does it SetWindowRgn around itself?

Thank you.

Perspx19-Aug-08 8:08

Perspx

19-Aug-08 8:08

I assume that the border and caption around the window is simply removed using SetWindowLong() with GWL_STYLE Smile | :)

Regards,
--Perspx

led mike19-Aug-08 8:29

led mike

19-Aug-08 8:29

Yeah but hopefully they followed their own advice and used SetWindowLongPtr Wink | ;)

led mike

Perspx19-Aug-08 8:45

Perspx

19-Aug-08 8:45

Is that like the programming version of being politically correct or something? Sigh | :sigh:

Regards,
--Perspx

Re: Live Messenger [modified]

led mike19-Aug-08 8:51

led mike

19-Aug-08 8:51

Perspx wrote:
Is that like the programming version of being politically correct or something?

No, it's more like the programming version of RTFM.

You walked right into that one. Laugh | :laugh:

led mike

Nathan Going19-Aug-08 8:37

Nathan Going

19-Aug-08 8:37

I just tried that, which does work, I would just need to resize the window each time so the contents stay in same location.

What I am seeing with the Windows Live Messenger is that the caption and thickframe is just hidden.

View 1 shows that when the window is captured via ALT-Printscreen, that it is actually the full dimensions of the caption and frame. View 2 shows it with the frame in place. I was just curious how they accomplished this.

Thanks.

modified on Wednesday, August 20, 2008 7:20 AM

Handling the maximize option for the MFC application in the taskmanager.

hariakuthota19-Aug-08 6:41

Re: Handling the maximize option for the MFC application in the taskmanager.

19-Aug-08 6:41

Hi all,
in my mfc dialog box application i am not handling the maximize option for the dialog box ( removed) but when I run the exe from the task manager I can maximize the dialog box....
How can I handle this so that I can give a message to the user saying this feature is not supported instead of maximizing the dialog box..
The problem if maximized is all my controls gets to one corner of the window and I want to avoid this...
please help me out in solving this bug....

Thanks in advance....

Mark Salsbery19-Aug-08 7:28

Re: Handling the maximize option for the MFC application in the taskmanager.

19-Aug-08 7:28

Interesting - I can't get my MFC dialog app to maximize
or minimize from the task manager Smile | :)

Have you tried adding a WM_SYSCOMMAND handler, something like this?

void CMyDialog::OnSysCommand(UINT nID, LPARAM lParam)
{
   if((nID & 0xFFF0) == SC_MAXIMIZE)
      return;

   CDialog::OnSysCommand(nID, lParam);
}

Mark

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

hariakuthota19-Aug-08 7:40

Re: Handling the maximize option for the MFC application in the taskmanager.

19-Aug-08 7:40

The code which u have suggested works fine if we want to handle the maximize button placed for a dialog box...

But in my application i am placing only the minimize button so no way user has a chance to maximize the dialog box......but there is one way through wichi a user can maximize the dialog box...that is using the task manager...when u run the application....go to the task manager then right click the exe running in the task manager u have the options of Minimize and Maximize along with someother options.....

I want to handle that maximize.....

Mark Salsbery19-Aug-08 7:48

Re: Handling the maximize option for the MFC application in the taskmanager.

19-Aug-08 7:48

So what you're telling me is you tried it and it didn't work?

I'd like to test it, but like I stated, I can't minimize my MFC
dialog (main window) from the task manager.

What about WM_GETMINMAXINFO?

Mark

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

Jijo.Raj19-Aug-08 7:56

Jijo.Raj

19-Aug-08 7:56

Mark Salsbery wrote:
What about WM_GETMINMAXINFO?

Mark,
I swear, I saw your reply after posting mine. Big Grin | :-D

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Re: Handling the maximize option for the MFC application in the taskmanager. [modified]

hariakuthota19-Aug-08 8:08