C / C++ / MFC

12-Dec-05 5:20

I have a modeless child dialog of another parent dialog.

when initializing the parent dialog, I set initial values for the child dialog controls; one of those controls ( more than one actually ) is a radio button group. That radio button group will enable/disable corresponding controls depending on which button is pressed.

Now, I want to initialize the radio with one value, and automatically enable/disabled corresponding controls ( like it would behave if the user click on one of the radio choice ).

I do something like :

//...
m_RadioValue = myRadioValue; // myRadioValue is the index to the radio button in the group.
UpdateData( FALSE );
//...

When doing the UpdateData, it will set the UI for the radio button, but is there a way to call the callback that would be called if the user clicked on one of the button; or do I have to do all this manually ? not a big work, but will need a bit of code re-organizing.

hope I was clear enough.

Thanks.

Maximilien Lincourt
Your Head A Splode - Strong Bad

David Crow12-Dec-05 6:01

12-Dec-05 6:01

I would refrain from using UpdateData(), especially with radio buttons. Create a CButton control variable for each radio button. In the dialog's OnInitDialog() method, do something like:

if (1 == myRadioValue)
{
    m_button1.SetCheck(BST_CHECKED);
    OnButton1();
}
else if (2 == myRadioValue)
{
    m_button2.SetCheck(BST_CHECKED);
    OnButton2();
}
else if (3 == myRadioValue)
{
    m_button3.SetCheck(BST_CHECKED);
    OnButton3();
}

"Take only what you need and leave the land as you found it." - Native American Proverb

Maximilien12-Dec-05 6:26

12-Dec-05 6:26

I will remove the UpdateData ... I already have CButton for each button.

Thanks, will look into that.

Maximilien Lincourt
Your Head A Splode - Strong Bad

Maximilien12-Dec-05 7:05

12-Dec-05 7:05

I think that my problem lies elsewhere, when I call my method to enable/disable controls, it does not work.

I do this in my OnInitDialog :

m_Radio1.SetCheck( BST_CHECKED );
m_Edit1.EnableWindow( FALSE );
m_Edit2.EnableWindow( FALSE );
m_Edit3.EnableWindow( FALSE );

but all of there are still enabled when the dialog appears. Confused | :confused:

'nyway ... In the grand scheme of things, it's only a minor, minor UI glitch.

Thanks David.

I'm certain I asked that same question a couple years ago ... Sigh | :sigh:

Maximilien Lincourt
Your Head A Splode - Strong Bad

David Crow12-Dec-05 8:03

12-Dec-05 8:03

Maximilien wrote:
but all of there are still enabled when the dialog appears.

Do you have other staments where EnableWindow(TRUE) is called?

"Take only what you need and leave the land as you found it." - Native American Proverb

Maximilien12-Dec-05 9:04

12-Dec-05 9:04

no, not that I can see, I put breakpoints everywhere ( running in debug mode ), and they never get called before I actually want them to be called.

I went this way, I disabled all my controls in the resource editor, and enabled them as needed ( instead of disabling them in the code ) ; my problem is when I initialized the dialog, not when using it.

Thanks.

Maximilien Lincourt
Your Head A Splode - Strong Bad

David Crow12-Dec-05 9:37

12-Dec-05 9:37

Maximilien wrote:
no, not that I can see, I put breakpoints everywhere ( running in debug mode ), and they never get called before I actually want them to be called.

Just to verify, temporarily change all EnableWindow(FALSE) calls to EnableWindow(TRUE). Even though a breakpoint is not being hit, this will at least eliminate the debugger as masking the problem.

Maximilien wrote:
I went this way, I disabled all my controls in the resource editor,

Again, temporarily change all the controls to be enabled via the resource editor. Now your dialog should come up with all of the controls enabled. Yes? If so, start changing one statement at a time, or one control at a time in the resource editor, until the problem shows up.

"Take only what you need and leave the land as you found it." - Native American Proverb

Maximilien12-Dec-05 9:59

12-Dec-05 9:59

Are you suspecting a resource ( ID related ) mixup ?

I will look at this tomorrow ... will launch a full rebuild when I leave tonight, to remove all possible conflicts.

Thanks.

Big Grin | :-D

Maximilien Lincourt
Your Head A Splode - Strong Bad

David Crow12-Dec-05 10:39

C++ using Crystal Reports

12-Dec-05 10:39

Maximilien wrote:

Are you suspecting a resource ( ID related ) mixup ?

No, but don't dismiss that either. I'm trying to rule out the possibility that a EnableWindow(FALSE) statement is actually being called even though the breakpoint in the debugger is indicating otherwise. I've seen it happen a few times.

"Take only what you need and leave the land as you found it." - Native American Proverb

dwillms12-Dec-05 4:43

dwillms

12-Dec-05 4:43

I need help in trying to code a report using Crystal Reports in C++. I can not find any examples using this capabilities. I find some using VB and C# but not C++. I could use anybody's help. Either an example or direction.

Thanks
Dick Willms
(WillmsDick@hotmail.com)

JonEngle12-Dec-05 5:17

JonEngle

12-Dec-05 5:17

Are you trying to run the report, display the report, or programmatically modify the report (you use different things for each)? By the way, you'll want to use their COM objects in C++, which aren't hard to use, and the VB and C# examples somewhat translate. By the way, which version of Crystal are you using?

dwillms12-Dec-05 8:39

dwillms

12-Dec-05 8:39

I will be doing all of the above. I am using the one that comes with .Net 2002 and or 2003. I have both. Currently I have finished the data collection phase and now I neeed to do the reporting phase against the data being collected.

JonEngle12-Dec-05 9:17

JonEngle

12-Dec-05 9:17

In MSDN, under "Crystal Reports for Visual Studio .Net":

When you are creating a C++ project to host Crystal reports on the Web or Windows, you should choose the Managed C++ Application template.

Procedures that involve design view operations and automatic code generation to incorporate Crystal reports generally apply to Visual Basic and Visual C# projects only. You should use the Report Object Model, the Web Forms Viewer class description and the Windows Forms Viewer class description to incorporate Crystal reports in Managed C++ projects.

It looks like the only portion of Crystal Reports they distribute with .Net is the .Net version, not the ActiveX controls or COM interfaces. So, is your C++ app a managed app?

Limit to GDI Handles and User Handles

dwillms13-Dec-05 7:03

dwillms

13-Dec-05 7:03

What I plan to do is to creat a managed app and perform the nessary sql to build a file containing the data and execute this managed app passing a report number. The approiate report will then be created using the file built and display the report. Do you have a better idea I will look into it.

Patje12-Dec-05 3:10

Patje

12-Dec-05 3:10

Hi,

My software is a highly interactive application that uses lots of windows with sub windows (a few hundred windows is not an exception). Not all windows are visible at the same time, but at certain moments the user must be able to quickly switch to another window so I keep the relevant windows invisible and make them visible when needed.
Due to the structure of the software, it is not possible to decrease the number of windows.
Nevertheless I have succeeded to decrease the used pens, brushes, .... Cleaning up the used menu handles and icon handles is planned for the medium- to long-term.

To prevent my application from starving the available GDI and/or User Handles, I want to check the amount of free GDI/User handles (both for the process as for the global system).
I found out that there is a function (GetGUIResources) where you can get the number of used resources, but there does not seem to be a function to get the number of free resources?
Does such a function exist or is there another way of obtaining that value?
Or is there a simple trick to minimize the number of used resources (or to increase the number of available resources)?

Thanks in advance.

Enjoy life, this is not a rehearsal !!!

Re: Limit to GDI Handles and User Handles

Blake Miller12-Dec-05 4:43

Blake Miller

12-Dec-05 4:43

Simple Trick - Install video card with more Video RAM.

Avoid using DDB, use DIB bitmaps isntead (they can reside in regular memory).

'Share' handles to objects - instead of duplicating a 1-pixel wide black pen 200 times, etc.

No shirt, no shoes, no brains, no service.

CSocket object in Win32 Console Application

ilgale12-Dec-05 2:57

ilgale

12-Dec-05 2:57

I'm developing a Win32 Console application with Visual C++ 6.0.
When I've created the project, I've addeed the MFC support.
All MFC classes works fine in my project except CSocket.
I can create a new instance of that class (operator new),
but when I call the Create metod, this call generates an exception
in the method AfxRegisterWndClass.

Can someone tell me how to solve this problem ?

Thanks a lot to everyone!

Alex Orovetskiy12-Dec-05 3:20

Alex Orovetskiy

12-Dec-05 3:20

Include afxsock.h Maybe it'll help...

--------------------------------
Human stupidity is infinite.

ilgale12-Dec-05 3:22

ilgale

12-Dec-05 3:22

I've already done it Cry | :((

!!!

khan++12-Dec-05 3:30

khan++

12-Dec-05 3:30

I may be wrong, but I am not sure why this function will even be called.
AfxRegisterWndClass().
MSDN says:
The Microsoft Foundation Class Library automatically registers several standard window classes for you. Call this function if you want to register your own window classes

It could be some windows you are creating in the console app.

this is this.

ilgale12-Dec-05 3:37

ilgale

12-Dec-05 3:37

I don't directly call this method.
It is called by the method Create of the CSocket class
(or by the other functions called by Create).

khan++12-Dec-05 3:52

khan++

12-Dec-05 3:52

I think you may already have done it, but did you call AfxSocketInit() before creating the socket ?
If yes, then it is some other error. Smile | :)

And by the way, CSocket does create a window "Socket Notification Sink". (just seen it)

this is this.

BadKarma12-Dec-05 4:11

BadKarma

12-Dec-05 4:11

Hi,

You probably forgotten to call AfxSocketInit();;

This initializes all the classes for socket support

codito ergo sum