GetObject problem

[Vintik]

Hello people,
I have some problems with GetObject(). It always returns zero (error), so I do not know how to change the font (to make it underline).
Look plz
HFONT hFont = (HFONT) SendMessage(hWnd, WM_GETFONT, 0, 0);
LOGFONT lf;
GetObject(hFont, sizeof(lf), &lf);
lf.lfUnderline = TRUE;
HFONT hNewFont = CreateFontIndirect(&lf);
SendMessage(hWnd, WM_SETFONT, (WPARAM) NewFont, FALSE);

[Brenton S.]

Hi Vintik,

Firstly, make sure hFont is not equal to NULL. If hFont is NULL, GetObject might fail. WM_GETFONT returns a handle to the font used by the window. If the window is using the system font, WM_GETFONT returns NULL.

[Vintik]

Hi Vintik,

Firstly, make sure hFont is not equal to NULL. If hFont is NULL, GetObject might fail. WM_GETFONT returns a handle to the font used by the window. If the window is using the system font, WM_GETFONT returns NULL.
So... I do not know if the window is using the system font, but this window is static control
hStatic = CreateWindow("STATIC",
"Link",
WS_CHILD | WS_VISIBLE | SS_SIMPLE ,
10, 250, 70, 20,
hMainWnd,
(HMENU) NULL,
(HINSTANCE) GetWindowLong(hMainWnd, GWL_HINSTANCE),
NULL);
How can I know about if this is the system font? And how can I change the font of static control such like that?
P. S. hFont is not NULL.

[golanshahar]

Why do you care if the control has system font or not, If you want to change it anyway? Simply change it to what you want.

Look at:

::CreateFontIndirect() (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/fontext_4rw4.asp)
::SendMessage() with WM_SETFONT.


This FAQ (http://www.codeguru.com/forum/showthread.php?t=321408) might also help you.

Cheers

[Vintik]

Why do you care if the control has system font or not, If you want to change it anyway? Simply change it to what you want.
Look at:

::CreateFontIndirect() (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/fontext_4rw4.asp)
::SendMessage() with WM_SETFONT.

This FAQ (http://www.codeguru.com/forum/showthread.php?t=321408) might also help you.
Cheers
Look at the beginning of the thread. I use that, but problem is in GetObject().

[humptydumpty]

Have a Look on this Link
http://www.codeguru.com/forum/showthread.php?t=379565

Edit :-
and
http://www.codeguru.com/cpp/controls/buttonctrl/article.php/c2065/

or you can try


HFONT hFont = SendMessage (hWnd, WM_GETFONT, 0, 0L);
LOGFONT lf;
if (!GetObject(hFont , sizeof(LOGFONT), &lf))
error;
or
HFONT f = (HFONT) GetStockObject(DEFAULT_GUI_FONT);
LOGFONT lf;
int iRes = GetObject(f, sizeof(LOGFONT), &lf);


Thanx

[Viorel]

As was suggested by Brenton S. before, the GetObject function probably fails because of the passed null font. Can you confirm that the hFont value returned by WM_GETFONT is not NULL?

If it is NULL, I think you can first get a predefined font with GetStockObject function. Like this:


HFONT hFont = (HFONT)GetStockObject(SYSTEM_FONT);

Then use your code for adjusting and assigning this font. Instead of SYSTEM_FONT, you can also use other parameters related to fonts (see the Documentation).

I hope this helps.

[golanshahar]

Look at the beginning of the thread. I use that, but problem is in GetObject().

You didn’t get my point. I know you used that, but I don’t understand why you need the ::GetObject() at all? Simply create the font you want use in your application and then set it to your controls.

Cheers

[Vintik]

Thank you all very much! I'll try.
You didn’t get my point. I know you used that, but I don’t understand why you need the ::GetObject() at all? Simply create the font you want use in your application and then set it to your controls.
Cheers
Sorry golanshahar, so... thank you for your help.

[golanshahar]

Sorry golanshahar, so... thank you for your help.

Its ok, no need to be sorry :wave:

Cheers

[Vintik]

Thank you all! It works OK now.