C / C++ / MFC

6-Sep-07 21:31

I use CDC to draw a string in a control.
But it always draw extent to other controls,parent window,for example.
I only want to draw in its own client area.
How should I control to draw?

Thanks

GOOD LUCK

KarstenK6-Sep-07 21:38

KarstenK

6-Sep-07 21:38

Use TextExtOut

Good luck!

Greetings from Germany

Nishad S6-Sep-07 21:54

6-Sep-07 21:54

You can use DrawText. If not possible, apply a clip to the DC using SelectClipRgn.

- NS -

Naveen6-Sep-07 22:26

6-Sep-07 22:26

kcynic wrote:
I use CDC to draw a string in a control.

Can you show me how you took the CDC ?

nave

[OpenedFileFinder]

Nishad S6-Sep-07 22:30

6-Sep-07 22:30

I think he got the problem of having CS_PARENTDC style.

- NS -

Naveen6-Sep-07 22:34

6-Sep-07 22:34

even if that style is present, if you take CClientDC or CWindowDC, it will apply the clilp so that the painting will not go outside that control.

Check the DCX_PARENTCLIP flag in the GetDCEx() function. CClientDC and CWindowDC calls this API with that flag.

nave

[OpenedFileFinder]

Nishad S7-Sep-07 0:52

7-Sep-07 0:52

The drawings should be in OnPaint. So the CPaintDC will be used. It is not having the clip.

Naveen.R wrote:
Check the DCX_PARENTCLIP flag in the GetDCEx() function

It has NO use.

- NS -

Naveen7-Sep-07 0:56

7-Sep-07 0:56

NS17 wrote:
The drawings should be in OnPaint

But he didn't mention so?

NS17 wrote:
So the CPaintDC will be used. It is not having the clip.

And about the paint dc. I will all other parts that needn't to be updated in the current paint message. And offourse It will never allow you to draw on parent.

NS17 wrote:
It has NO use.

Can u tell me why?

nave

[OpenedFileFinder]

Nishad S7-Sep-07 1:29

7-Sep-07 1:29

Naveen.R wrote:
But he didn't mention so?

That I agree... Wink | ;)

Naveen.R wrote:
offourse It will never allow you to draw on parent.

Did you try it even once before?

Naveen.R wrote:
Can u tell me why?

It is simply not working... Wink | ;)

- NS -

kcynic7-Sep-07 1:16

7-Sep-07 1:16

the control is drived from CStatic.I use " CDC* pDC=GetDC();" to create the DC.

Nishad S7-Sep-07 1:26

7-Sep-07 1:26

Simply the static control is having the CS_PARENTDC class style. That is reason of this issue. You can avoid the issue as I said before. Or you can remove this style from the class, which will solve the issue. But it is not promoted it because it will affect all the static controls.

- NS -

kcynic7-Sep-07 3:55

7-Sep-07 3:55

But How to remove such style?

Nishad S8-Sep-07 0:47

8-Sep-07 0:47

Use SetClassLong( hWnd, GCL_STYLE, GetClassLong( hWnd, GCL_STYLE ) & ~CS_PARENTDC );

- NS -

kcynic8-Sep-07 2:08

8-Sep-07 2:08

Yes,it works well now.

Thank you very much.

Hamid_RT6-Sep-07 23:47

Hamid_RT

6-Sep-07 23:47

Can you show your code how did you try to it?

kcynic7-Sep-07 1:28

Toolbar in Windows Taskbar

7-Sep-07 1:28

Yes,I use CWindowDC,it works well,but CClientDC not.
Thank you all.

GOOD LUCK.

Parent & owner

nbugalia6-Sep-07 21:14

nbugalia

6-Sep-07 21:14

Hi All,

What is the difference between a parent and owner?

I have three functions

CWnd::GetParent ();
CWnd::GetOwner ();
CWnd::GetParentOwner ();

Please help.

Thanks,
NB++

Re: Parent & owner

Jason Teagle6-Sep-07 22:18

Jason Teagle

6-Sep-07 22:18

In both cases, the parent or owner has been set as the parent of a control (e.g. SetParent(), or by specifying in the parent parameter of a Create() call).

The difference is that if the control was created with the WS_CHILD style, then the outer window is a PARENT. If it was created without this style, it is only an OWNER.

For a parent window, when the parent is minimized all child controls are hidden. For an owner only, 'owned' windows remain in place and can be minimized separately.

Note that only 'windows' can be owned - 'controls' *must* have a parent and are therefore created with WS_CHILD.

(GetParentOwner() will find the nearest window that is *either* a parent or an owner, but not a child - the others will keep walking up the chain until they find specifically one or the other.)

Nishad S6-Sep-07 21:12

Re: Toolbar in Windows Taskbar

6-Sep-07 21:12

Hi,

I need to create an application that is shown in Windows Taskbar as a Toolbar, same as the Windows Media Player do.

I dont know where should I start.

Thanks in advance.

- NS -

Karismatic6-Sep-07 23:03

Karismatic

6-Sep-07 23:03

search for Shell_NotifyIcon in msdn
i think this will help

Regards,
Pankaj Sachdeva

"There is no future lies in any job"
"but"
"future lies in the person who holds the job"

Re: Toolbar in Windows Taskbar

Naveen6-Sep-07 23:10

Re: Toolbar in Windows Taskbar

6-Sep-07 23:10

They are called deskbands. check Here[^]

nave

[OpenedFileFinder]

Nishad S7-Sep-07 0:53

New to win32 controls, using the toolbar+buttons

7-Sep-07 0:53

Thank you. I have to look... Smile | :)

- NS -

ioctl516-Sep-07 21:05

ioctl51

6-Sep-07 21:05

Hello, im pretty new to using win32 common controls, im wondering how to use the toolbar messages correctyl. Im writing an application that can remove icon's from the system-tray toolbar for annoying applications that dosn't allow you to remove their tray icon.

Here is my code, the button is hidden when i send a TB_HIDEBUTTON, but the toolbar is not resized properly at all, it shows cleary that a button is missing. So i need a way to automatically resize it to the correct size for the new number of buttons. I have tried TB_AUTOSIZE but it dosn't seem to have any effect.

Also, a second problem is the TB_GETBUTTONTEXT message, it returns a strLen of the button string correctly, but the "text" var is always just unilitialized garbage, i dont see why. Anyone knows why?

void main()<br />
{<br />
	HWND hwnd = FindWindowEx(0,0,"Shell_TrayWnd",0);<br />
	hwnd = FindWindowEx(hwnd , 0 ,"TrayNotifyWnd",0);<br />
	hwnd = FindWindowEx(hwnd , 0 ,"SysPager",0);<br />
	hwnd = FindWindowEx(hwnd , 0 ,0,"Notification Area");<br />
<br />
	int index = 0;<br />
	int count = (int)::SendMessage(hwnd, TB_BUTTONCOUNT, 0, 0);<br />
	for(int i=0; i<count; i++)<br />
	{		<br />
		char text[1024];<br />
		int strLen = ::SendMessage(hwnd, TB_GETBUTTONTEXT, i, (LPARAM)text);	<br />
	}<br />
<br />
	BOOL b = ::SendMessage(hwnd, TB_HIDEBUTTON, 0, 1);	<br />
	b = ::SendMessage(hwnd, TB_AUTOSIZE, 0, 0);	<br />
}

Thanks in advance

Re: New to win32 controls, using the toolbar+buttons

Naveen6-Sep-07 22:54