C / C++ / MFC

Re: Looking for advice/guidance on writting / painting to non Client area of window

30-Dec-21 4:39

Hi
I have been trying to write to the non client area of a window specifically a Cdialog

This CDialog has a Rich Edit (I am displaying storage obtained) and I am trying to give details about it in the Non client area

seems to me there are 3 choices if I want to make it look nice nice means using the CDC class

1) process the ON_WM_NcPaint 2) using windows desktop manager (extending the frame and making it the client area) 3) using a static control / window

was wondering if someone could guide on which path to take

thanks

Victor Nijegorodov30-Dec-21 5:50

Victor Nijegorodov

30-Dec-21 5:50

ForNow wrote:
This CDialog has a Rich Edit (I am displaying storage obtained) and I am trying to give details about it in the Non client area

What kind of "details" are you gong to give in the dialog titlebar ("Non client area")? And why the simple SetWindowText call could not help you?
Or did you mean some other area (not a titlebar - ?) to put your details?

Re: Looking for advice/guidance on writting / painting to non Client area of window

ForNow30-Dec-21 7:33

Re: Looking for advice/guidance on writting / painting to non Client area of window

30-Dec-21 7:33

I am displaying MainFrame storage sent via TCP/IP sockets to Windows so the rich edit would display the actual storage

The data in the NC frame of the dialog would be the storage subpool where the storage was obtained, the storage key, whether the storage fetch protect (non readable) owning tcb in z/os resources are owned by the task represented by a tcb control that have programs represented by RB (request blocks)

as anside one of the things I learned that in windows that are only process and threads

thanks

Victor Nijegorodov30-Dec-21 8:49

Victor Nijegorodov

30-Dec-21 8:49

ForNow wrote:
I am displaying MainFrame storage sent via TCP/IP sockets to Windows so the rich edit would display the actual storage

In the context of your question it doesn't matter where the data you are going to display is coming form and how. Suspicious | :suss:

however, you didn't answer why the simple SetWindowText cannot be used nor did you described the format of the data to be desplayed in NC area. Unsure | :~

Re: Looking for advice/guidance on writting / painting to non Client area of window

ForNow30-Dec-21 9:12

Re: Looking for advice/guidance on writting / painting to non Client area of window

30-Dec-21 9:12

let me preface this by saying I am basically a mainfame programer so then I appreciate your expertise so here goes

SetTextWindow gives me one line to fill out with no choice for color background color or font

If I for instance use an ownerdraw static window my OnDrawitem could handle an rcItem Rect with possibly multiple lines allowing me to have my own font and color ?

Victor Nijegorodov30-Dec-21 10:19

Victor Nijegorodov

30-Dec-21 10:19

Then what does prevent you to implement some user defined control (derived from CStatic or, better, from CWnd), place it above or below your RichEdit and draw what you want using CDC class in this control?
Just try it! Then if you wouldn't happy with such implementation then your next step were to move the code to the OnNcPaint handler.

Re: Looking for advice/guidance on writting / painting to non Client area of window

ForNow30-Dec-21 10:24

Re: Looking for advice/guidance on writting / painting to non Client area of window

30-Dec-21 10:24

thanks BTW I spent hours and hours with NCPAINT is doesnt work after getting the right DC GetWindowDC did a Textout pos 1,1 and text was never displayed

anyway thanks for your help much appreciate it

charlieg30-Dec-21 11:54

Re: Looking for advice/guidance on writting / painting to non Client area of window

30-Dec-21 11:54

Make sure you are using the correct DC. Windows loves to clip stuff when drawing.

Charlie Gilley

“They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.” BF, 1759

Has never been more appropriate.

RedDk30-Dec-21 7:29

RedDk

30-Dec-21 7:29

I did a quick searchereno using what we use, Lucene.net, and it's query syntax, and obtained:

XFontDialog - Customizing CFontDialog Part I: Adding Font Filters[^]

If you scroll down to the end of the page where the last image is perfunctorily displayed perhaps you'll see what I saw and think Is this what a non-client area customization looks like?

Re: Looking for advice/guidance on writting / painting to non Client area of window

ForNow30-Dec-21 7:50

ActiveX control development - old farts need apply

30-Dec-21 7:50

thanks will look

charlieg28-Dec-21 16:08

Re: ActiveX control development - old farts need apply

28-Dec-21 16:08

No offense to you youngsters...

I'm looking for someone or people who have scars from activeX development. Yes, I know it's obsolete, but unknown to most of you the world runs on existing code.
Rather than pollute the forum, you can find me at cgilley2640@gmail.com.

This is a cash opportunity - I'm stuck. Email me and I'll give you the particulars.

Charlie Gilley

“They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.” BF, 1759

Has never been more appropriate.

Richard MacCutchan28-Dec-21 22:21

Re: ActiveX control development - old farts need apply

28-Dec-21 22:21

Why is this in the C/C++ forum rather than Collaboration / Beta Testing Discussion Boards[^] ?

charlieg29-Dec-21 1:37

Re: ActiveX control development - old farts need apply

29-Dec-21 1:37

Because it's all written in C++? Smile | :)

I'll move it.

Also, I did not realize the discussion board list had multiple levels. Just learned something new.

Charlie Gilley

“They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.” BF, 1759

Has never been more appropriate.

charlieg29-Dec-21 16:49

Link error referencing Windows Desk Top Manager

29-Dec-21 16:49

happily, after dancing with this for many years, I have resolved my bug. As in most cases, it was a series of cascading failures, but ultimately, it came down to an arcane threading issue in COM.
Of course, the error message was "failed to load control, is it properly registered?" which had nothing to do with the real problem.

Happy to have this monkey off my back.

Charlie Gilley

“They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.” BF, 1759

Has never been more appropriate.

ForNow28-Dec-21 1:35

Re: Link error referencing Windows Desk Top Manager

28-Dec-21 1:35

Hi

I got a link error

error LNK2019: unresolved external symbol __imp_DwmExtendFrameIntoClientArea

referencing this API

DwmExtendFrameIntoClientArea

I did include in my VS property pages Linker->general-> input dwmapi.lib tried to open it (the dwmapi.lib) with depedency Walker got no DOS or PE signature. I opened dwmapi.dll from windows\system32 and saw the API thru dependency walker inluded dwmapi.h in the source. The Doc has Dwmapi with a capitol D but both .lib and the dll had small d

Any help appreciated thanks

Richard MacCutchan28-Dec-21 2:03

Re: Link error referencing Windows Desk Top Manager stupid me

28-Dec-21 2:03

According to the documentation at DwmExtendFrameIntoClientArea function (dwmapi.h) - Win32 apps | Microsoft Docs[^], the library is named Dwmapi.lib. However, my experiences is that the linker does not care about character case in .lib names. There must be something else that prevents it from satisfying this reference.

ForNow28-Dec-21 2:45

Re: Link error referencing Windows Desk Top Manager stupid me

28-Dec-21 2:45

Richard I changed it in the release Property Pages added dwmapi.lib but I did a debug build

Frown | :(

got a clean link now

thanks

Richard MacCutchan28-Dec-21 3:38

Drawing a Caption using CDC Class

28-Dec-21 3:38

Oh yes, yet another one of Microsoft's 'Easter Eggs' left for us to trip over.

ForNow24-Dec-21 3:32

Re: Drawing a Caption using CDC Class

24-Dec-21 3:32

Hi I am trying to write a caption to my modeless dialog box I did a getwindowrect and screen to client as the negative "y" coordinates would be where I would want to place my text

did dc->Setcolor to blue got my text extents from CDC When I did a dc->textout nothing happened

I also noticed Cwnd has DrawCaption but doesnt take a parameter for Text. DrawText however has a DT_TEXT flag but where does it pick up the text

Can you write a caption using a device context
Thanks

Graham Breach24-Dec-21 7:08

Graham Breach

24-Dec-21 7:08

It sounds like you are trying to write in the title bar of the window - is that right? The easy way is to call SetWindowText() on the dialog box HWND (or do whatever the MFC equivalent is) and let the default dialog proc handle drawing your text.

Otherwise you would have to draw in the non-client area, which has its own WM_NCPAINT message to handle.

Re: Drawing a Caption using CDC Class

ForNow24-Dec-21 7:35

WriteFile return access denied?

24-Dec-21 7:35

thanks I choose the later NC_CLIENT might I ask you a few follow up questions 1) is there a way to determine the NC area,like GetWindowNCRect. In Additon TextOut is giving me issues would I be better off using DrawText would it need to be preceded by DrawCaption

Not sure as

if you could steer me the right direction would appreciate it

Le@rner20-Dec-21 21:32

Le@rner

20-Dec-21 21:32

WriteFile return access denied?

while i providing admin privileges

please help me for this.

C++

HANDLE hCD = CreateFile (file_Name, GENERIC_READ|GENERIC_WRITE,
						 FILE_SHARE_READ|FILE_SHARE_WRITE,
						 NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
						 NULL);

WriteFile (hCD, Buffer, Size, &bytesWritten, NULL);

its fails with access denied.

thanks in advance.

Re: WriteFile return access denied?

Richard MacCutchan20-Dec-21 21:51