C / C++ / MFC

Stuart Dootson4-Jul-09 4:25

4-Jul-09 4:25

What happens if you call EndDialog(IDOK); instead of OnOK?

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

FISH7864-Jul-09 4:35

4-Jul-09 4:35

I tried both...The dialog box closes.

Stuart Dootson4-Jul-09 4:48

4-Jul-09 4:48

OK - what value is DoModal actually returning then?

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

FISH7864-Jul-09 4:57

4-Jul-09 4:57

The control is just not returning back ?

Stuart Dootson4-Jul-09 5:05

4-Jul-09 5:05

Run it under the debugger. That should indicate when the application exits, if (as appears likely) there's an exception of some sort occurring.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

molesworth4-Jul-09 4:49

molesworth

4-Jul-09 4:49

What value does nResponse have? That would seem to be the simplest and most basic thing to check...

edit : a fraction too slow Smile | :)

There are three kinds of people in the world - those who can count and those who can't...

FISH7864-Jul-09 4:58

4-Jul-09 4:58

It's just not returing anything..the app just dies...

molesworth4-Jul-09 5:05

molesworth

4-Jul-09 5:05

FISH786 wrote:
It's just not returing anything..the app just dies...

In which case, you must be doing something very naughty in the dialog...

You need to step through the code in there, and see where it's going wrong. Put breakpoints in all the event handlers, and track through until you find the place it crashes.

There are three kinds of people in the world - those who can count and those who can't...

FISH7864-Jul-09 5:06

4-Jul-09 5:06

I just created a new project and using the default setting...

I still don't get the nresponse..

BOOL CToolApp::InitInstance()
CToolDlg dlg;
m_pMainWnd = &dlg;
INT_PTR nResponse = dlg.DoModal();
if (nResponse == IDOK)
{
// TODO: Place code here to handle when the dialog is
//  dismissed with OK
MessageBox(NULL,"It Works Now","Information",MB_OK);
}
else if (nResponse == IDCANCEL)
{
	// TODO: Place code here to handle when the dialog is
	//  dismissed with Cancel
}
{

I left the CToolDlg as default..I din't put any code and just clicked the ok button.
I don't get a response back.

Stuart Dootson4-Jul-09 5:15

4-Jul-09 5:15

Sounds like there's something wrong with your system, then - I just tried the very same thing and it returned 1 (IDOK) as expected when I pressed the OK button.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

FISH7864-Jul-09 5:16

4-Jul-09 5:16

Wow, Do I re-install to fix it? Or is there something I should try before re-installing?

Stuart Dootson4-Jul-09 5:21

4-Jul-09 5:21

Single-step through the MFC source code of the CDialog::DoModal call. That should let you see what happens in and after the modal message loop.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

FISH7864-Jul-09 12:33

4-Jul-09 12:33

I did single step...I do see nResponse comming back as 1. However it's just jumping the whole if block and going straight to return FALSE.

This is with just plain project no code anywhere except a message box inside the

if (nResponse == IDOK)
{
MessageBox();
}
else if (nResponse == IDCANCEL)
{
}
It's jumping this whole block.

it going to return FALSE;

the follwing is what I get at the end of the steping through.

'Tool.exe': Loaded 'C:\WINDOWS\system32\imm32.dll'
'Tool.exe': Loaded 'C:\WINDOWS\system32\uxtheme.dll'
'Tool.exe': Loaded 'C:\WINDOWS\system32\shell32.dll'
'Tool.exe': Loaded 'C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83\comctl32.dll'
'Tool.exe': Loaded 'C:\WINDOWS\WinSxS\x86_Microsoft.VC90.MFCLOC_1fc8b3b9a1e18e3b_9.0.30729.1_x-ww_b0db7d03\mfc90enu.dll', Binary was not built with debug information.
'Tool.exe': Loaded 'C:\WINDOWS\system32\msctf.dll'
'Tool.exe': Loaded 'C:\WINDOWS\system32\version.dll'
'Tool.exe': Unloaded 'C:\WINDOWS\system32\version.dll'
'Tool.exe': Loaded 'C:\WINDOWS\system32\msctfime.ime'
The program '[976] Tool.exe: Native' has exited with code 0 (0x0).

However I did an uninstall of the update of Internet Explorer that was done on this machine a week ago.

I am Running Visual Studio 2008
Version 9.0.30729.1 SP

Not sure if the above info makes any difference?

Stuart Dootson4-Jul-09 12:36

4-Jul-09 12:36

FISH786 wrote:
if (nResponse == IDOK)
{
MessageBox();
}
else if (nResponse == IDCANCEL)
{
}
It's jumping this whole block.

I'm surprised that it doesn't execute the messagebox - VC++ will (even in Debug mode) optimise away a completely empty if...else... statement

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

FISH7864-Jul-09 12:43

4-Jul-09 12:43

Well is there a way I can work around it?, I guess reinstalling is not going to help either?

Quick question are you running the same version of Visual studio 2008?

Could you let me know what version you running?

I could uninstall 2008 and revert back to 2005 if I have to?

Thanks a million.

Stuart Dootson4-Jul-09 12:53

4-Jul-09 12:53

FISH786 wrote:
Quick question are you running the same version of Visual studio 2008?

VS2008 SP1

FISH786 wrote:
I could uninstall 2008 and revert back to 2005 if I have to?

I don't there's a problem with your installation from what you've written - what you've said indicates that the right thing's being returned. Why doesn't that translate back into your code? Not sure.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

FISH7864-Jul-09 13:01

4-Jul-09 13:01

Any suggetions as to how I could resolve this?

Thanks a million

Stuart Dootson4-Jul-09 13:06

4-Jul-09 13:06

By debugging your code and working out why your code's not getting called when it should be. If that means debugging assembly language, then that's what you need to do.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

FISH7864-Jul-09 13:09

4-Jul-09 13:09

I am not sure what to say, I just installed VS on a different machine and I get the same thing, no message box.
I used a full install.

Thanks

Stuart Dootson4-Jul-09 13:10

4-Jul-09 13:10

Which says there's something not quite right with your code, not your Visual Studio install.

Debugging's the way forward in this case, I'm afraid.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

FISH7864-Jul-09 15:33

4-Jul-09 15:33

Hello there,
Found it.
This should have not been used, when I am verifying the key to the main app.

m_pMainWnd = &dlg;

Thanks a lot for all your help.

Stuart Dootson4-Jul-09 22:40

4-Jul-09 22:40

Well done - I'm glad you found the problem.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

FISH7865-Jul-09 0:56

5-Jul-09 0:56

Thank you.