Re: How to put the desktop into a device-context ? - C / C++ / MFC Discussion Boards

Re: Where to initilaize a doc variable in the doc class?

Ravi Bhavnani25-Jul-02 3:22

25-Jul-02 3:22

Inside OnOpenDocument() and/or OnNewDocument(). These get called when the document is opened or created. Similarly, document cleanup should occur in DeleteContents().

/ravi

Let's put "civil" back into "civilization"
http://www.ravib.com
ravib@ravib.com

Re: Where to initilaize a doc variable in the doc class?

Tomasz Sowinski25-Jul-02 3:23

Tomasz Sowinski

25-Jul-02 3:23

If you have MDI app, put the init code in the constructor. SDI reuses CDocument-derived object, so you have to override OnNewDocument/OnOpenDocument/DeleteContents.

Tomasz Sowinski -- http://www.shooltz.com

- It's for protection
- Protection from what? Zee Germans?

Re: Where to initilaize a doc variable in the doc class?

ns25-Jul-02 3:32

25-Jul-02 3:32

Thanks very much for the ideas. According to MSDN,

"CDocument::OnNewDocument. This method is called by the framework as part of the File New command."
SInce in my MDI app, there is no File/New button or menu item by design, I did not know if I could use it. I like the constructor idea so I think I'll use it since thats always guaranteed to run in MDI. I just dont know if OnNewDocument is called automatically, or only when the user presses File/New.

Confused | :confused:

about this.
Thank you for the replies.
ns

How to put the desktop into a device-context ?

adara25-Jul-02 3:08

adara

25-Jul-02 3:08

How to put the desktop into a device-context ?? Rose | [Rose]

Re: How to put the desktop into a device-context ?

Tomasz Sowinski25-Jul-02 3:17

Tomasz Sowinski

25-Jul-02 3:17

Try PaintDestkop function. However, it will not work with memory DCs on 2K/XP.

Tomasz Sowinski -- http://www.shooltz.com

- It's for protection
- Protection from what? Zee Germans?

Re: How to put the desktop into a device-context ?

adara25-Jul-02 3:24

adara

25-Jul-02 3:24

Well , i need it to w2k and above .. why it will not work ? any other ideas? thanx

Re: How to put the desktop into a device-context ?

Tomasz Sowinski25-Jul-02 3:29

Tomasz Sowinski

25-Jul-02 3:29

adara wrote:
why it will not work ?

I have no idea. It works on 2K/XP when you pass client (not memory) DC to PaintDesktop. Maybe they've decided that this will be some security hole Smile | :)

You may try GetDesktopWindow and WM_PRINT instead.

Tomasz Sowinski -- http://www.shooltz.com

- It's for protection
- Protection from what? Zee Germans?

Re: How to put the desktop into a device-context ?

Mike Nordell25-Jul-02 14:12

Mike Nordell

25-Jul-02 14:12

Straight from the SDK sample Switcher:

if (hdc = CreateDC (TEXT("DISPLAY"), NULL, NULL, NULL))
{
    // Copy the desktop to a memory DC
    int xSize = GetSystemMetrics(SM_CXSCREEN);
    int ySize = GetSystemMetrics(SM_CYSCREEN);
    StretchBlt(memDC, 0, 0, destW, destH,
               hdc, 0, 0, xSize, ySize, SRCCOPY);
    DeleteDC(hdc);
}

Settings in Visual Studio.NET

pankajdaga25-Jul-02 2:54

pankajdaga

25-Jul-02 2:54

Hi all!
Does anyone know if there is a way to override the default project settings in VC.NET or VC60?
By this I don't mean the manual tackling with Project/Settings dialog. To make myself clear I'll give a little example: When you create a new Win32 project, it defaults to use single-threaded run-time libraries, but almost all my projects are multi-threaded. So, after creating the project, I *always* have to go to Project/Settings dialog and make appropriate adjustments. It would be nice to be able to override these default settings for good, so every new project will be automatically set to use multi-threaded run-time libraries.
I tried to automate this task using IDE VB macros in VC60 but I didn't succeed.

Thanks for any help

Pankaj

Without struggle, there is no progress

Re: Settings in Visual Studio.NET

Rick Crone25-Jul-02 10:52

Rick Crone

25-Jul-02 10:52

This maybe lame help... but I think you may want a 'custom application wizard'... or something like that. I have not done this yet... but I really should.

CPP file cannot be combined into MFC project?

Ziban200025-Jul-02 2:39

Ziban2000

25-Jul-02 2:39

I am writing MFC apps and I have included a c++ file with header ( I have built them previosly in win32 console project ) without errors. And when I removed the main() and put into MFC project it comes out with the following error:
fatal error C1010: unexpected end of file while looking for precompiled header directive

Any idea? Confused | :confused:

Re: CPP file cannot be combined into MFC project?

Anonymous25-Jul-02 2:45

Anonymous

25-Jul-02 2:45

You did not include "stdafx.h"

Suc6

OnUpdate and OnInitialUpdate

ns25-Jul-02 1:56

25-Jul-02 1:56

I just want to confirm this. Is it s fact that when OnInitialUpdate runs it calls OnUpdate ? I know that UpdateAllViews calls it, but wanted to make sure that the very first time the view is created, its called also. I put in a messagebox in the OnUpdate and it did trigger initially before the view came up. however I want to get absolute confirmation.
Thanks,
ns

Re: OnUpdate and OnInitialUpdate

Nish Nishant25-Jul-02 2:04

Nish Nishant

25-Jul-02 2:04

CView::OnInitialUpdate does call OnUpdate. But if you override OnInitialUpdate and you do not call the base class implementation, then OnUpdate never gets called.

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: OnUpdate and OnInitialUpdate

ns25-Jul-02 2:09

25-Jul-02 2:09

Hmmm. I dont know. I didnt call OnUpdate explicitly from my InitialUpdate, but the msgbox I put in OnUpdate fired before the view was created. I'm doing something with char*, and if I do call it explicitly, the items in a listbox I am populating in OnUpdate get messed up. Why in the world am I getting the messgaebox in OnUpdate even though I havent called it explicitly. Incidentally, thats the place I populate my listbox(in onupdate) and it is getting populated when the view appears. ???? Confused | :confused:

Thanks for answering.
ns

Re: OnUpdate and OnInitialUpdate

Ravi Bhavnani25-Jul-02 3:27

Ravi Bhavnani

25-Jul-02 3:27

OnInitialUpdate() is called when the view is attached to the document. OnUpdate() is called when the doc is modified. You can cause OnUpdate() to be invoked by marking the document dirty (by calling SetModifiedFlag()) or by calling UpdateAllViews().

/ravi

Let's put "civil" back into "civilization"
http://www.ravib.com
ravib@ravib.com

Bye bye...

Ravi Bhavnani25-Jul-02 3:29

Ravi Bhavnani

25-Jul-02 3:29

...for most of the day. Have to leave before my housekeeper shows up. I'm told I get in the way. Smile | :)

/ravi

Let's put "civil" back into "civilization"
http://www.ravib.com
ravib@ravib.com

Re: OnUpdate and OnInitialUpdate

David Chamberlain25-Jul-02 5:35

David Chamberlain

25-Jul-02 5:35

If you really need to get down into the guts and see what's happening, there are several articles on CP about debugging trace statements, etc. A very simple way for trying to see the sequence of just a few functions is to put an ASSERT (false); at the beginning of those functions. Yes, there are much better ways that scale up nicely, but just to get a sense of how these few functions act in sequence, try this. When each assert fails, and you get your message box, click on ignore and let the functions proceed.

Good luck,
Dave

"You can say that again." -- Dept. of Redundancy Dept.

biggest .NET problem

Anonymous25-Jul-02 1:13

Anonymous

25-Jul-02 1:13

As a matter of fact I am good looking, tall, smart, and on top of all I have lots of girls.
Still I have certain problems in life. E.g. I don't know the 25 chars product key of VS .NET and without that I look pretty poor, fat, and bald.
Could somebody help me please in getting back to my old style?

Thanks

pepepp493@hotmail.com

Re: biggest .NET problem

Christian Graus25-Jul-02 1:52

Christian Graus

25-Jul-02 1:52

In other words, you are an idiot.

Could I have your address ? Seeing as you approve of stealing, I'd like to steal your car.

Christian

come on all you MS suckups, defend your sugar-daddy now. - Chris Losinger - 11/07/2002

Re: biggest .NET problem

Renjith Ramachandran25-Jul-02 5:08

Renjith Ramachandran

25-Jul-02 5:08

i will suggest the solution...
-----------------------------------------
just call one of ur galfriends..and take the number of hairs on her head..and tell me the exact number...and i will give you the key..!!!

-------------------------------------------------

Renjith-CPian.

Re: biggest .NET problem

Mukkie26-Jul-02 5:40

Mukkie

26-Jul-02 5:40

Usually serial numbers come with products

return TRUE

Renjith Ramachandran25-Jul-02 1:07

Renjith Ramachandran

25-Jul-02 1:07

in OnInitDialog()

in the end of the defenition...
return TRUE;

and here is a commment added by the wizard says...
"return TRUE unless you set the focus to a control
EXCEPTION OCX Property pages return false"

what is the matter behind that??? for why the wizard say that??
what happends when we return TRUE or FALSE ??

Anyone can Explain??

Thankx in Advance....

Renjith-CPian.

Re: return TRUE

Nish Nishant25-Jul-02 1:36

Nish Nishant

25-Jul-02 1:36

If OnInitDialog returns TRUE , CDialog will set the focus to the first child control based on the tab order, but you can return FALSE if you have manually set the focus to some other control

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: return TRUE

Renjith Ramachandran25-Jul-02 5:04

Renjith Ramachandran

25-Jul-02 5:04

ok..but 4 y the activex controls return false??

-----------me too frm TVM

Renjith-CPian.

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