Modal to Modeless dialogs? - C / C++ / MFC Discussion Boards

Rickard Andersson²⁰11-Oct-02 9:14

11-Oct-02 9:14

Yes, search CodeProject!

Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C#, ASP.NET and C++!

Re: FTP file

Anonymous11-Oct-02 9:34

Anonymous

11-Oct-02 9:34

I hate answers like these because I usually do look through the articles first and post questions when I cannot find an answer. So, just to let everyone know, I DID SEARCH CODEPROJECT? I found 2 articles, basically. And neither were that good. I would like information on how to create this not how to download source code someone else has put together. Any other ideas?

Re: FTP file

Rickard Andersson²⁰11-Oct-02 23:27

Rickard Andersson²⁰

11-Oct-02 23:27

I'm sorry, but you didn't tell! Poke tongue | ;-P

Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C#, ASP.NET and C++!

Re: FTP file

perlmunger12-Oct-02 17:01

perlmunger

12-Oct-02 17:01

This should get you going. CFtpConnection. Not sure how many people use the wininet stuff, but this seems to do the job.

-Matt

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

The 3 great virtues of a programmer:
Laziness, Impatience, and Hubris.
--Larry Wall

error C2512: 'CMeasureItemsPage' : no appropriate default construc

Daniel Strigl11-Oct-02 7:35

Daniel Strigl

11-Oct-02 7:35

Please HELP!

I have a CPropertyPage class...
I have changed the constructor from

CMeasureItemsPage();

CMeasureItemsPage(CRoom* pRoom);

I need this, because the page of the property sheet must working with this member!

After this change Visual C++ says:

error C2512: 'CMeasureItemsPage' : no appropriate default construc

The error is at the following line:

IMPLEMENT_DYNCREATE(CMeasureItemsPage, CPropertyPage)

What's wrong? Why does the IMPLEMENT_DYNCREATE macro needs a default constructor?

Daniel Wink | ;)

---------------------------
Never change a running system!

Re: error C2512: 'CMeasureItemsPage' : no appropriate default construc

Gary R. Wheeler11-Oct-02 16:15

Gary R. Wheeler

11-Oct-02 16:15

Try changing your constructor to:

CMeasureItemsPage(CRoom* pRoom = NULL);

IMPLEMENT_DYNCREATE is used for MFC objects that are "dynamically created" by the framework (for example, when they are serialized to/from a file). Adding the = NULL default argument satisfies the requirement for a default constructor. It sounds like you're not going to doing anything that requires it, but you could add a check in your constructor:

if (pRoom == NULL) {
    // ...
}

in order to handle that case.

Gary R. Wheeler

Re: error C2512: 'CMeasureItemsPage' : no appropriate default construc

Daniel Strigl13-Oct-02 8:57

Daniel Strigl

13-Oct-02 8:57

Thanks!

Daniel Wink | ;)

---------------------------
Never change a running system!

Modal to Modeless dialogs?

clintsinger11-Oct-02 7:01

clintsinger

11-Oct-02 7:01

I have recently taken over development of an application that uses modal dialogs for everything and they are designed to overlap each other (full screen windows ce device). This scenario worked fine until a request came in to 'skin' the app for use on the local machine while demoing the program.

I can get the first dialog converted over to be a child view and run in my 'skin' container dialog but soon as I try showing the other screens, they go modal which takes a way any control of the skin. Plus the dialogs begin competing with each other and begin overdrawing each other (raw painting to the screen, and now child controls).

Finally it seems that the message pump for key presses stays with the first child even if set focus is sent to the new child dialog that is sitting on top.

My question is this: How would I make modal modelesss dialogs - ie I want to behave as if they were modal but not be modal to the skin dialog so it can still receive mouse clicks and key presses. I feel this would also help with the competition of the drawing code so the screen doesn't swap between dialogs.

Please Help.

Sincerly,
Clint Singer

Re: Modal to Modeless dialogs?

Paul M Watt11-Oct-02 7:42

Paul M Watt

11-Oct-02 7:42

You can look at how MFC implements DoModal, and do something similar to that.

Basically a modal dialog is just a modeless dialog, where a second message pump has been placed on the stack in order to process the messages, and the parent window of the modal dialog has been disabled to prevent focus from going back to the parent window.

When you create your own message loop, one other thing to be aware of is that you will need to be sure to call IsDialogMessage to dispatch your dialog messages. THis is how the tab control and other special dialog functionality is performed.

Good Luck

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

How to get text in ComboBox

Vincent Ye11-Oct-02 7:01

Vincent Ye

11-Oct-02 7:01

Hi, all

I created a Dropdown ComboBox. now I want to handle the CBN_EDITCHANGE message. At that time, how can I get the text in the editbox of the combobox box? I know one way is to use UpdateData, but it will update all the data include other controls, how can I just get the text of the combobox?

Thanks in advance

Re: How to get text in ComboBox

jmkhael11-Oct-02 7:29

jmkhael

11-Oct-02 7:29

if MFC:

int CComboBox::GetLBText( int nIndex, LPTSTR lpszText ) const;
void CComboBox::GetLBText( int nIndex, CString& rString ) const;

if Win32:

CBN_EDITCHANGE
idComboBox = (int) LOWORD(wParam); // identifier of combo box
hwndComboBox = (HWND)lParam; // handle to combo box

So: use ::GetWindowText with the window handle as the Handle of the combobox, hope this help

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

HELP TAPI Problems

nlecren11-Oct-02 6:58

nlecren

11-Oct-02 6:58

I have been trying for days to figure out how to force tapi to connect at 2400 baud no matter what modem is connected to the com port, i have tried every concievable method in the documentation for setting the baud rate, with TAPI promptly ignoring ever one of them, i know this because i have a line analyzer telling me what is coming out the back end. What is the magic trick to force modems to only dial 2400 baud without user intervention, and stop auto - negotiating baud rates. AT commands will not help as they very considerably between vendors. Maybe this is just impossible!

Re: HELP TAPI Problems

Michael P Butler12-Oct-02 7:54

Michael P Butler

12-Oct-02 7:54

What code are you trying to use to set the baud rate? What TSPI is the modem using for its TAPI functionality?

I've found this article useful for serial comms,
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnfiles/html/msdn_serial.asp[^]

it uses BuildCommDCB for setting the baud rate.

Michael

"I've died for a living in the movies and tv.
But the hardest thing I'll ever do is watch my leading ladies,
Kiss some other guy while I'm bandaging my knee."
-- The Unknown Stuntman

Q about CProgressCtrl

Mister Transistor11-Oct-02 6:53

Mister Transistor

11-Oct-02 6:53

I have a simple problem with MFC and VS6 - I want to display a progress bar whilst I'm loading a lot of data. The load happens in a method of my class, which is created under the application's document class. My simple question is - how do I get hold of the parent window needed to create the CProgressCtrl? Can I use GetFocus() somehow?

cheers
Andrew

VB pass a para to VC

aoyee11-Oct-02 6:33

aoyee

11-Oct-02 6:33

how do i write the programe.....
i want to pass a para in Vb to VC and show in VC
please hejp me~~~~~~~~ Confused | :confused:

in VB:
public sub form_mousedown(...)
'sent a message to VC
'and display in VC file,
'the message just like "Hi,Wellcome to VB and VC"
end sub

and i don't konw how to write those code in VC
because i have never learned VC,so i really need to everyone helps...
can you write a simple code to me,let me see the file in VC
and write a dll file make the qeustion can work ...
i really need your help....thanks~~~~~~~~`Good luck

Re: VB pass a para to VC

Anonymous11-Oct-02 6:43

Anonymous

11-Oct-02 6:43

Post a message to the VC++ Application and there implement a callback that will be called for u Smile | :)

afx_msg LRESULT memberFxn(WPARAM, LPARAM);

But u should know a bit of VC++ o do that im sure Smile | :)

Re: VB pass a para to VC

Daniel Turini11-Oct-02 7:05

Daniel Turini

11-Oct-02 7:05

You are evil Poke tongue | ;-P

My latest articles:
XOR tricks for RAID data protection
Win32 process suspend/resume tool

Re: VB pass a para to VC

jmkhael11-Oct-02 7:21

jmkhael

11-Oct-02 7:21

Why evil?? Smile | :)

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: VB pass a para to VC

Anonymous11-Oct-02 22:06

Anonymous

11-Oct-02 22:06

can you write a simple code for me???
i really don't know how to write code in VC....
so....
help me thanks~~~~~~~~~~~~~~

SQL and C++

Anonymous11-Oct-02 5:57

Anonymous

11-Oct-02 5:57

Hi

I just wanna know how i can embed SQL in C++. By the way i have this relational schema

HOTEL (Hotel_No, Hotel_Name, Address)
GUEST (Guest_No, Guest_Name, Address)
ROOM (Room_No, Hotel_No, Type, Price)
BOOKING (Hotel_No, Guest_No, Date_From, Date_To, Room_No)

Where it asks what is the total income, for the month of July 2001, from occupied rooms at all the Sheridan Hotels.

I'm trying to program it in SQL in SQL Analyzer, but i have never experienced programming with this transact SQL before. In the first instance, it is like Pascal to me, (IF ..END IF, BEGIN)Does anyone know any hints or tips regarding above problem???

All helps are highly appreciated!

Re: SQL and C++

Steve S11-Oct-02 6:13

Steve S

11-Oct-02 6:13

You have a number of choices;

(a) write a stored procedure in T-SQL and call that from your app, passing in your date range
(b) write a select statement, and use any of OLE DB, ATL Data consumer classes, ODBC or even ESQL/C to do it
(c) Use something like Crystal Reports.

More seriously, if you want to issue a simple SQL statement, then something like the ATL classes are almost a no-brainer. There's a Wizard you can use to get you started, with a simple example, and then just tweak bits from it's generated output to go on.

It's sometimes confusing, with Accessors and commands, datasources and sessions, but read through the on-line help and it does make sense.

Steve S
[This signature space available for rent]

Really strange string error

will138311-Oct-02 5:12

will1383

11-Oct-02 5:12

Hi all,

Here's my issue. I'm using CString and here's what I setting it to:

...
tempString += _T("<basefont size="" 2""="">\n");
...

yes I am building an HTML file.

The problem is with the quotes. For some odd reason, when the string is assigned into tempString ALL of the quotes are removed so it looks like this in the debug window:

<basefont size="2">

WHY? I use this method in many other places and it comes out just fine, which should be:
<basefont size="2">

Anybody have any ideas at all? I do this all over the place, but this doesn't work in one case in my application. I don't understand at all. Confused | :confused:

Any help and suggestions are greatly appreciated.

Thanks!

Dan

Re: Really strange string error

jmkhael11-Oct-02 5:17

jmkhael

11-Oct-02 5:17

put a \ before each "

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: Really strange string error

Daniel Turini11-Oct-02 5:22

Daniel Turini

11-Oct-02 5:22

use

tempString += _T("<basefont size=\"2\">\n");

because this:

"string1" "string2"

is equal to this:

"string1""string2"

which, in turn, is equal to this:
is equal to this:

"string1string2"

My latest articles:
XOR tricks for RAID data protection
Win32 process suspend/resume tool

What the Heck?

Ryan B.11-Oct-02 4:51

Ryan B.

11-Oct-02 4:51

Okay, so in a past project I had used IDL to expose a UDT i had in a dll to an excel spreadsheet. The DLL in that case was a straight C++ DLL, no MFC.

In this case I have an MFC DLL. I want to expose a UDT to the excel spreadsheet. I have tried, but it does not work. I have the UDT defined in my IDL file, but when I use "references" tool in excel, I dont have access to the type? The code is below. Am I doing something wrong here?

<code>
[
uuid(A1CCE58E-553D-4394-828C-5227D4526293),
helpstring("Topic Conversion Library For Tag List")
]

/////////////////////////////////////////////////
// Library Declaration			
////////////////////////////////////////////////

library TopicConversionLib
{
///////////////////////////////////////////////
// Topic Data Type Definition		
///////////////////////////////////////////////
// This will be used to "transport" data info
// from teh DLL to the VB application
///////////////////////////////////////////////
	
typedef struct _vb_topic_data
{
short	t_num;	 // Topic Number	Short
float	t_value; // Topic Value		Float
BSTR	t_name;	 // Topic Name		String
}	VbTopicData;

[
	helpstring("topic stuff"),
	dllname("topic_conversion.dll")
]
module topic_conversion
{

};
}

Ryan Baillargeon
Software Specialist
Fuel Cell Technologies Inc.

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