C / C++ / MFC

22-Aug-01 0:46

Hi,

can anyone help, I'm trying to add help to a property sheet (just the plain button to side of the OK/Cancel buttons) and I've done the following:

(in prop-sheet constructor)
m_psh.dwFlags |= (PSH_NOAPPLYNOW | PSH_HASHELP);

(in prop-page OnInitDlg (tried both before and after call to base class))
m_psp.dwFlags |= PSP_HASHELP;

Added a handler for the ID_HELP called OnHelp in the prop-page class.

My problem is, the button is *always* disabled... is there something else I have to do? the help seems quite bad in this area!

Regards,
Ray

Tomasz Sowinski22-Aug-01 1:26

22-Aug-01 1:26

You should handle WM_HELPINFO (not ID_HELP) in the property page class.

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

Ray Hayes22-Aug-01 1:54

22-Aug-01 1:54

I was indeed using ID_HELP, but can not use WM_HELPINFO since it doesn't seem to be defined. I tried, for completeness, WM_HELP but I'm still in the "disabled" situation.

Any other ideas?

Regards,
Ray

Tomasz Sowinski22-Aug-01 2:02

22-Aug-01 2:02

can not use WM_HELPINFO since it doesn't seem to be defined.

What do you mean? Are you getting a compiler error?

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

Ray Hayes22-Aug-01 3:16

22-Aug-01 3:16

That seemed to be the case, but I've now used the ClassWizard to put in a handler ( which was done as ON_WM_HELPINFO() rather than an ON_COMMAND(WM_HELPINFO,OnHelp) as I'd added by hand. )

It still, however, is not enabled when I run the application. Do I need any enabler handlers?

Regards,
Ray

Tomasz Sowinski22-Aug-01 3:46

22-Aug-01 3:46

Check the KB article Q132715.

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

Ray Hayes22-Aug-01 23:20

Embedding A Word Doc On A Dialog

22-Aug-01 23:20

Thanks Tomasz,

whilst I'm sure I'm doing more than I need to do, the following seemed to get things working for me.

1) setting the psp flags within the constructor (not OnInitDialog)
2) adding the WM_HELP handler (called WM_HELPINFO from ClassWizard)
3) adding an ON_BTN_CLICKED handler for ID_HELP.

Seems more work than I thought, but works a charm.

Thanks for your input.

Regards,
Ray

AJ12322-Aug-01 0:15

AJ123

22-Aug-01 0:15

Hi,

Can anyone point me in the right direction of creating an app with an embedded word document.

I don't know where to start.

Cheers

Rich

TAPI problem

Sandeep Shetty22-Aug-01 0:05

Sandeep Shetty

22-Aug-01 0:05

Hello!!

I am writing a TAPI program in which there are two appliations.One for the server and one for the client.
When I am dialing from the client it reaches the server and then the server calls lineAccept(). The lineAccept also succeeds. It then goes to LINE_REPLY of teh server and it gives error there i.e the dwParm2 value is negative... The dwParam1 paramater(dwrequestID) of the lineCallBackFunc is same as the return value of the lineAccept().

The error is LINEERR_OPERATIONUNAVAIL which means:
The operation is not available, such as for the given device or specified line.

We have no idea as to why this error is occuring..

Please help..

Sandeep

Newbie Q. Updating of window client area

22-Aug-01 0:03

Hi!
I am a newbie, and trying to to some very simple VisualC++ stuff. I have a bit of a newbie question regarding updating of a windows client area when the window has been, for instance, covered by another window or minimized/restored.

I am putting pixels on the client area via the windows dc using the CDC::SetPixel(...). When all pixels are put, I would think they are stored somewhere for Windows to automatically redraw the client area when needed. Am I wrong?
Or must I create my own place for the pixels (like a CBitmap?) and try to re-display the bitmap in a OnPaint message handler (or another propriate handler)? Or what need I do?

I am not using the Doc/View architecture (if that would have taken care of this for me), only a simple CFrameWnd derived window.

Would be very grateful for any input!

Tomasz Sowinski22-Aug-01 0:30

22-Aug-01 0:30

Or must I create my own place for the pixels (like a CBitmap?) and try to re-display the bitmap in a OnPaint message handler (or another propriate handler)?

Windows doesn't store the window contents for you. You have two options:

1) always redraw the pixels in OnPaint

2) draw pixels in off-screen buffer (using CBitmap and memory device context), then BitBlt in OnPaint. There's a class called CMemDC somewhere on this website - it should make this easier.

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

22-Aug-01 3:13

Thanks for answer!
I try to move the pixel-filled dc by Blt:ing the drawn area to a CBitmap member in my class. I try to do this by following the advice in the Reply I found on another thread (see reply at bottom of this).

When I try to do this and before doing the BitBlt, I first create a 'dummy' CDC object and then do SelectObject(...) my CBitmap into this dummy CDC. When I do this I get ASSERT failure... does my dummy CDC need to be initialized in someway? MUST I attach it to a window or anything? (It's members m_hDc and m_hAttribDC are both 0.)

Re: How do I 'fill' a CBitmap with a DC's 'image'
Jonathon Lockett 19:31 8 Jul 01
If you've got a DC and you want to copy it to a CBitmap, just select the CBitmap into another DC and Blt across.

Jonathon

22-Aug-01 3:23

No bother!
I never did a CDC::CreateCompatibleDC(...) on my dummy CDC.
It now works!
Many thanks for your effort.

Tomasz Sowinski22-Aug-01 3:24