Re: deleting a 'new' object - C / C++ / MFC Discussion Boards

9-Mar-02 21:52

I'm trying to create a dialog bar with a tab control on it. Works well, both dialog bar and tab control are in place. Now in order to show something in the tab control, I show/hide dialogs. The problem is that the dialogs are located on the top left corner of the tab control, hiding the tabs. Any suggestions how to solve this?

I do it this way:

TabControl=(CTabCtrl*)DialogBar.GetDlgItem(IDC_TABCONTROL);
TabControl.InsertItem(0,"Test");

Pane1.Create(IDD_PANE1,TabControl);
Pane1.ShowWindow(SW_SHOW);

Need some information about VBA,Thank you!

big20029-Mar-02 21:21

big2002

9-Mar-02 21:21

I want to know how to process a Word document using VBA.Can you tell me where are the information?thank you!
Besides VBA,which tools can do the same work,SQL?c++builder?
If you can find information about this,please tell me.
For i know little English,I hope you can tell me the particular web sites.Thank you very much!

huang chun shen

Need some information about VBA,Thank you!

9-Mar-02 20:54

I want to know how to process a Word document using VBA.Can you tell me where are the information?thank you!
Besides VBA,which tools can do the same work,SQL?powerbuilder?
If you can find information about this,please tell me.
For i know little English,I hope you can tell me the particular web sites.Thank you very much!

deleting a 'new' object

Jack Handy9-Mar-02 15:17

Jack Handy

9-Mar-02 15:17

What I have is a CAsyncSocket that listens for connections and creates another CAsyncSocket* using new to accept each incoming connection. Now when one of these new CAsyncSocket objects gets an OnClose() it needs to be deleted but you can't very well just 'delete this' since you are inside of the object itself. I am currently sending a message to my main wnd which then deletes it. This seems like a very sloppy way to me. Is there a PROPER way to do this that I might be overlooking?

Thanks,

Jack

Re: deleting a 'new' object

Nish Nishant9-Mar-02 15:24

Nish Nishant

9-Mar-02 15:24

You can always do this from within any class :-

delete this;

Nish

Bow wow wow,
Yippee yo yippee yay,
My miniputt high,
Is now 30 yay.

Re: deleting a 'new' object

Jack Handy10-Mar-02 4:59

Jack Handy

10-Mar-02 4:59

Thanks Nish,

I don't know why it didn't work for me before. Must have been some other error and I assumed you couldn't delete this.

-Jack

Re: deleting a 'new' object

Paul M Watt10-Mar-02 6:13

Paul M Watt

10-Mar-02 6:13

/moliate said
Of course you can't do it (call delete this) from inside a member function

You can do it inside of a member function, you just will not be able to call any more of the member variables for you class after you call delete. In fact the only way that delete this would work is if you were inside of a member function of that class. Otherwise the this pointer would not be valid.

Think about Release() in the IUnknown interface of COM, if you are familiar with this, it will call delete this if the reference count for its object reaches 0.

Re: deleting a 'new' object

Nish Nishant10-Mar-02 6:23

Nish Nishant

10-Mar-02 6:23

moliate wrote:
Of course you can't do it from inside a member function

On the contrary it is the reverse.
You can only do a delete this from a member function. Anywhere else this has no meaning.

Nish

Bow wow wow,
Yippee yo yippee yay,
My miniputt high,
Is now 30 yay.

Parsing string with Time Zone info

Mike.NET9-Mar-02 12:03

Mike.NET

9-Mar-02 12:03

I tried using COleDateTime::ParseDateTime(...) and VarDateFromStr(...) to parse a date/time string that contains *time zone* information (ET, CT, +4:00, GMT+4:00, etc...) but every time I do so I get "Invalid DateTime"

// code //////////////////////
COleDateTime dt;
CString sdate = "Feb 1 2002 17:05 +7:00"; // <- Time Zone string date

dt.ParseDateTime(sdate);

CString st2 = dt.Format("%H:%M"); // <- returns 'Invalid DateTime'
// -----------------------------

Is it just me (am I doing this wrong) or the
ParseDateTime is no good for time zones?

Is there any other way/method that could parse string
with time zone information (like: "Feb 1 2002 17:05 +7:00").

JScript and VC#.NET have no problem parsing date/time strings with time zone info, but I can't seem to parse date/time string in VC++. Frown | :(

Platform: WinXP Pro, VC++.NET (unmanaged)

Thanks in advance
Mike

Re: Parsing string with Time Zone info

Matt Newman9-Mar-02 15:04

Matt Newman

9-Mar-02 15:04

From Visual C++ .NET documentation:

Remarks
If the string was successfully converted to a date/time value, the value of this COleDateTime object is set to that value and its status to valid.

Note   Year values must lie between 100 and 9999, inclusively.
The lpszDate parameter can take a variety of formats. For example, the following strings contain acceptable date/time formats:

"25 January 1996"
"8:30:00"
"20:30:00"
"January 25, 1996 8:30:00"
"8:30:00 Jan. 25, 1996"
"1/25/1996 8:30:00"  // always specify the full year,
                     // even in a 'short date' format

Seems odd but you can't get it from ParseDateTime

- Suspicious | :suss:

Matt Newman Suspicious | :suss:

-Sonork ID: 100.11179:BestSnowman

†

Wie kann ich meinem Programm ein neues Aussehen verschaffen ?

CryoGate9-Mar-02 10:13

CryoGate

9-Mar-02 10:13

Ich suche eine kurze Lösung für das Problem.
Wie kann ich meinem Programm ein neues Aussehen verschaffen wie zB: Media Player im Kompaktmodus ...
Kurze Erklärung bitte.
Confused | :confused:

Re: Wie kann ich meinem Programm ein neues Aussehen verschaffen ?

User 66589-Mar-02 10:49

User 6658

9-Mar-02 10:49

Probier mal

http://www.codeproject.com/dialog/skinsyse.asp

ist ein gutes Programm, das mit Skins arbeitet. Solltest du dir mal ansehen. Smile | :)

Achja, das hier ist ein englisches Forum, normalerweise antwortet hier keiner auf Deutsch

Gruß

modified 12-Sep-18 21:01pm.

Re: Wie kann ich meinem Programm ein neues Aussehen verschaffen ?

Anders Molin9-Mar-02 11:34

Anders Molin

9-Mar-02 11:34

Please speak english...

- Anders

Money talks, but all mine ever says is "Goodbye!"

Re: Wie kann ich meinem Programm ein neues Aussehen verschaffen ?

User 66589-Mar-02 11:38

User 6658

9-Mar-02 11:38

Sorry, I already told him that this is an English board.

He just wanted to use skins in his app, so I recommended him a link and the question is therefore answered Smile | :)

regards
Gregor

modified 12-Sep-18 21:01pm.

Re: Wie kann ich meinem Programm ein neues Aussehen verschaffen ?

Anders Molin9-Mar-02 11:48

Anders Molin

9-Mar-02 11:48

Oops

I don't live far from germany (in Denmark), but I have to say that I don't understand a word of what you guys say/write... Blush | :O

- Anders

Money talks, but all mine ever says is "Goodbye!"

Alpha blending in Windows98 and older?

Wizard_019-Mar-02 7:36

Wizard_01

9-Mar-02 7:36

Hi
Does anybody of you know a formula to calculate pixels of a bitmap created from 2 bitmaps using alpha blending?

Thanx

Wiizi Smile | :)

Re: Alpha blending in Windows98 and older?

Tomasz Sowinski9-Mar-02 7:36

Tomasz Sowinski

9-Mar-02 7:36

You may try this:
dst = src1 * alpha + (1 - alpha) * src2
alpha is a value from [0..1] range.

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

Re: Alpha blending in Windows98 and older?

Wizard_019-Mar-02 7:48

Wizard_01

9-Mar-02 7:48

THANKS for your prompt reply Smile | :)

What shall I use as dst and src1,2 ? (RGB,HSL,CMYK ...)

Could you suggest me some source code on the web ?

Thanks

Wiizi Smile | :)

Re: Alpha blending in Windows98 and older?

Tomasz Sowinski9-Mar-02 7:45

Tomasz Sowinski

9-Mar-02 7:45

You have to calculate this three times for R, G and B.

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

Re: Alpha blending in Windows98 and older?

Wizard_019-Mar-02 8:13

Wizard_01

9-Mar-02 8:13

Thanks

Wiizi Smile | :)

Why can't I toggle menu?

Pony9-Mar-02 7:14

Pony

9-Mar-02 7:14

Hello,
Why can't I toggle menu? I have system tray menu that I want to toggle the 3rd menu item. But the problem is it doesn't toggle when I click it. Help me, please...

ON_COMMAND(ID_FLOAT, OnFloat)

void CMainFrame::OnFloat()
{
CMenu* mmenu = GetMenu();
CMenu* submenu = mmenu->GetSubMenu(2);
UINT state = submenu->GetMenuState(ID_FLOAT, MF_BYCOMMAND);

if (state & MF_CHECKED)
{
submenu->CheckMenuItem(ID_FLOAT, MF_UNCHECKED | MF_BYCOMMAND);
}
else
{
submenu->CheckMenuItem(ID_FLOAT, MF_CHECKED | MF_BYCOMMAND);
}
}

Thank you,
Blush | :O

Re: Why can't I toggle menu?

Tomasz Sowinski9-Mar-02 7:32

Tomasz Sowinski

9-Mar-02 7:32

In MFC you're not using CheckMenuItem etc. Instead, you add special ON_UPDATE_COMMAND_UI handler which gets the CCmdUI object on input. One of the methods is SetCheck, which is all you need to have menu items checked.

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

Why can't I toggle menu?

Pony9-Mar-02 7:14

Pony

9-Mar-02 7:14

CTreeCtrl problems...

Greven9-Mar-02 6:40

Greven

9-Mar-02 6:40

How can I get an existing CTreeCtrl to display the +- box to the left of the name? The reason I say existing is that I placed it on the form for the dialog box, and didn't explicitly call create. How do I modify the settings of it? Also, I attached a image list to the tree, but I can't get them to have transparent edges (around the image). I've tried attaching a mask, but it just won't do it. Obviously I am doing things I've never had to do before Smile | :)

This tree thing is driving me nuts...

Programming in binary is as easy as 01 10 11.

Re: CTreeCtrl problems...

Nish Nishant9-Mar-02 6:57

Nish Nishant

9-Mar-02 6:57

TVS_HASBUTTONS and just to make it look better add TVS_HASLINES and also TVS_LINESATROOT

Nish

Bow wow wow,
Yippee yo yippee yay,
My miniputt high,
Is now 30 yay.

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