TextOut.

[G`HOST]

Code Select Expand

.ELSEIF uMsg==WM_PAINT
                   invoke BeginPaint,hWnd,ADDR ps
                   invoke GetWindowDC,hWnd
                   mov hdc,eax
                   invoke SetBkMode,hdc,TRANSPARENT
                   invoke SetTextColor,hdc,White
                   invokeCreateFont,18,10,0,0,700,TRUE,FALSE,FALSE,\     DEFAULT_CHARSET,OUT_DEFAULT_PRECIS,CLIP_DEFAULT_PRECIS,\
DEFAULT_QUALITY,DEFAULT_PITCH or FF_SCRIPT,ADDR FontName
                   invoke SelectObject,hdc,eax
                   mov hFont,eax
                   invoke TextOut,hdc,150,5,ADDR Text1,9
                   invoke TextOut,hdc,248,22,ADDR Text2,14
                   invoke SelectObject,hdc,hFont
                   invoke EndPaint,hWnd,ADDR ps
Can somebody help me out with this :
The Text disappear when the Window Loses focus,and appears back after it has gained the focus.

[ramguru]

The problem maybe is that you create font in WM_PAINT message (u sopposed to do it in WM_CREATE) or that you execute GetWindowDC - it's enough to use ps.hdc...btw for what reason u use this func

[G`HOST]

Well as far CreateFont thingi goes i never had a problem before,I may be wrong but i think thats not the problem here.Beside i am not trying to set the specified font for the whole app,just in the above code section,i did returned the actual font to dc,didnt i? :toothy
And about ps.hdc,i dont know if the dc here is for the client area or the whole window.Since i an trying to paint text in the nonclient area. :8)

[ramguru]

OK now I get it, but here goes onother quest(ion) why don't u use WM_NCPAINT which is dedicated to draw things in non-client area using exactly GetWindowDC

[Mincho Georgiev]

First, you don't need to use GetWindowDC, the HDC value for the window is returned by the BeginPaintFunction ,i.e.:

...
invoke BeginPaint,hwnd,addr ps
mov hdc,eax

...

Second, there's a several different reasons that can cause a Text Flickering. As a start ,you can check out the WINDOWCLASSEX wc.style member of your window, the style must be a 0, CS_HREDRAW and CS_VREDRAW are constants and causing repainting of the window in case of horizontal or vertical change(resize too). that repainting dont repaint the text if your PaintProc is not properly written.
I have made some chanhes in you code snippet and there's the result.
Bye for now!


[attachment deleted by admin]

[G`HOST]

OK now I get it, but here goes onother quest(ion) why don't u use WM_NCPAINT which is dedicated to draw things in non-client area using exactly GetWindowDC

WM_NCPAINT:An application sends the WM_NCPAINT message to a window when its frame must be painted. (Win32.hlp)

GetWindowDc:The GetWindowDC function retrieves the device context (DC) for the entire window, including title bar, menus, and scroll bars. A window device context permits painting anywhere in a window, because the origin of the device context is the upper-left corner of the window instead of the client area.

See.[title bar, menus, and scroll bars].?Thats why.

[G`HOST]

Thanx shaka_zulu for your help,but i am still unsure that the dc returned by the BeginPaint call is for Client area or the whole Window.I tried it but didnt work.Well i think i will dl your modifications and see whats there.

[ramguru]

I'm sure dc return BeginPaint or ps.hdc is only for client area and you choose what to use BaginPaint/EndPaint or GetWindowDC or something else...

[G`HOST]

shaka_zulu
No man it doesnt solve the problem. the thing is,that i want to display the string on the Menu bar not in the client area and i am able to paint it there nice and clean, its that it just disappears whenever the window looses focus.

[ramguru]

OK this will work

Code Select Expand


.ELSEIF uMsg==WM_NCACTIVATE
invoke SetWindowPos,hWnd,0,0,0,0,0,SWP_FRAMECHANGED+SWP_NOSIZE+SWP_NOMOVE+SWP_NOZORDER+SWP_NOACTIVATE

.ELSEIF uMsg==WM_NCPAINT
                   ;invoke BeginPaint,hWnd,ADDR ps
                   invoke GetWindowDC,hWnd
                   mov hdc,eax
                   invoke SetBkMode,hdc,TRANSPARENT
                   invoke SetTextColor,hdc,White
                   invokeCreateFont,18,10,0,0,700,TRUE,FALSE,FALSE,\     DEFAULT_CHARSET,OUT_DEFAULT_PRECIS,CLIP_DEFAULT_PRECIS,\
DEFAULT_QUALITY,DEFAULT_PITCH or FF_SCRIPT,ADDR FontName
                   invoke SelectObject,hdc,eax
                   mov hFont,eax
                   invoke TextOut,hdc,150,5,ADDR Text1,9
                   invoke TextOut,hdc,248,22,ADDR Text2,14
                   invoke SelectObject,hdc,hFont
                   ;invoke EndPaint,hWnd,ADDR ps


[Mincho Georgiev]

Yes, GetWindowDC returns the DC for the entire window,but i didn't understand why you need that for TextOut

[Mincho Georgiev]

ok, i didn't saw your previous post

[G`HOST]

But the question still remains,Why the window behaving the way it is?

[Mincho Georgiev]

There it is, you dont need to paint the whole window to do that. you just need to paint the text every time when receiving
WM_SETFOCUS and WM_KILLFOCUS messages:


[attachment deleted by admin]

[PBrennick]

shaka_zulu,
That is an excellent example.  It works well on my XP machine except I had to fudge the x,y coordinates a bit, well the 'y' coordinate, actually.

Code Select Expand


invoke TextOut,hdc,50,33,addr String1,sizeof String1-1


No doubt it is because of my resolution settings.  Anyway, this method is very useful.  Thank you.

Paul