ownerdraw round button question - C / C++ / MFC Discussion Boards

Re: resize problem?????????????

mimimimilaw4-Jul-06 20:11

mimimimilaw

4-Jul-06 20:11

sorry. what is flag value??

Re: resize problem?????????????

_AnsHUMAN_ 4-Jul-06 20:15

_AnsHUMAN_

4-Jul-06 20:15

BOOL RedrawWindow(
HWND hWnd, // handle to window
CONST RECT *lprcUpdate, // update rectangle
HRGN hrgnUpdate, // handle to update region
UINT flags // array of redraw flags /// Try using a combination
);

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: resize problem?????????????

mimimimilaw4-Jul-06 21:11

mimimimilaw

4-Jul-06 21:11

THX A LOT

Re: resize problem?????????????

Hamid_RT4-Jul-06 20:20

Hamid_RT

4-Jul-06 20:20

You can see MSDN for flags

whitesky

Format specifier for WORD

RockyJames4-Jul-06 18:05

RockyJames

4-Jul-06 18:05

hi,

i want to know format specifier for WORD and BYTE.

Example:
int nValue;
CString str;
str.Format("%d",nValue);
afxMessageBox(str);

%d for integer,same way i want to know for WORD and BTYE.

Thanks in before
James Rose | [Rose]

Re: Format specifier for WORD

_AnsHUMAN_ 4-Jul-06 18:16

_AnsHUMAN_

4-Jul-06 18:16

A WORD is a 16 bit unsigned integer. use %u for that

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: Format specifier for WORD

traapons4-Jul-06 21:52

traapons

4-Jul-06 21:52

hi,

"%d" -> Signed integers
"%u" -> UnSigned integers

as BYTE is unsigned type use "%u"

Urs,
-Pons
-----------------------
The greatest of faults, I should say, is to be conscious of none.

ownerdraw round button question

HOW WHAT4-Jul-06 18:02

HOW WHAT

4-Jul-06 18:02

I create a CMyButton and handled WM_SIZE

void CMyButton::OnSize(...)<br />
{<br />
	CButton::OnSize(...);<br />
<br />
	CRect rect;<br />
	GetClientRect(rect);<br />
<br />
	m_rgn.DeleteObject(); <br />
	SetWindowRgn(NULL, FALSE);<br />
	m_rgn.CreateEllipticRgnIndirect(rect);<br />
	SetWindowRgn(m_rgn, TRUE);<br />
<br />
}

But when the button size changed, round size not change, why?

Thanks.

Re: ownerdraw round button question

_AnsHUMAN_ 4-Jul-06 18:12

_AnsHUMAN_

4-Jul-06 18:12

Need to change the values in the rect that is being passed to m_rgn.CreateEllipticRgnIndirect

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: ownerdraw round button question

HOW WHAT4-Jul-06 19:17

HOW WHAT

4-Jul-06 19:17

"Need to change the values in the rect" how to do?

Re: ownerdraw round button question

_AnsHUMAN_ 4-Jul-06 19:29

_AnsHUMAN_

4-Jul-06 19:29

rect.top = 20; etc . Do likewise for rect.left,rect.right,rect.bottom

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: ownerdraw round button question

HOW WHAT4-Jul-06 19:45

HOW WHAT

4-Jul-06 19:45

i want "when button size is changed, the round size same with button size"

Re: ownerdraw round button question

_AnsHUMAN_ 4-Jul-06 19:56

_AnsHUMAN_

4-Jul-06 19:56

Instead of the code that you are writing try this.

void CMyButton::OnSize(...)
{
CButton::OnSize(...);
CRect rect(10,10,30,30);
m_rgn.DeleteObject();
SetWindowRgn(NULL, FALSE);
m_rgn.CreateEllipticRgnIndirect(rect);
SetWindowRgn(m_rgn, TRUE);
}

I hope this helps

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: ownerdraw round button question

Hamid_RT4-Jul-06 20:00

Hamid_RT

4-Jul-06 20:00

Its not good

<br />
CRect rect;<br />
GetClientRect(rect);<br />
ScreenToClient(rect);<br />

whitesky

Re: ownerdraw round button question

HOW WHAT4-Jul-06 20:38

HOW WHAT

4-Jul-06 20:38

question still exist.

if in non-child windows have not this question, but in button happen. Frown | :(

Re: ownerdraw round button question

eli150219794-Jul-06 21:08

eli15021979

4-Jul-06 21:08

Hi ,

HOW WHAT wrote:
CRect rect;
GetClientRect(rect);

I'm not sure , but according to MSDN , GetClientRect()
gets as parameter the pointer to the rect , and not the rect
itself :

CWnd::GetClientRect  
void GetClientRect( LPRECT lpRect ) const;

So try the following instead :

CRect rect;
GetClientRect(&rect);

Hopes this helps ,

Eli

Re: ownerdraw round button question

HOW WHAT4-Jul-06 21:16

HOW WHAT

4-Jul-06 21:16

CRect::operator LPRECT

CRect rect;GetClientRect(rect);

==
RECT rect;GetClientRect(&rect);

combobox editing

Ram Murali4-Jul-06 17:39

Ram Murali

4-Jul-06 17:39

Hi all,

I created combo box with control variable. I like to set the no of characters to be keyed in in the combobox(editable).

In brief, set the text limit to the Combobox control variable. Can anyone help me in this problem?

Thanks in Advance.

Regards,
Ram

Re: combobox editing

FarPointer4-Jul-06 17:59

FarPointer

4-Jul-06 17:59

BOOL LimitText( int nMaxChars );

Regards,
FarPointer
Blog:FARPOINTER

Re: combobox editing

see me4-Jul-06 18:00

see me

4-Jul-06 18:00

Use LimitText( long lLimit )

ComboBox m_Combobox;
m_Combobox.LimitText( 64 );

Smile | :)

"Dream bigger...Do bigger...Expect smaller"
aji

sending and receiving float

thathvamsi4-Jul-06 16:54

thathvamsi

4-Jul-06 16:54

hello all,
I want to serially transmit float variables/data types between the PC and the serial device (RABBIT 3000 -an 8bit microcontroller).

I am transmitting with databits as 8 for serial transmission as my microcontroller is an 8bit one.

I convert float to long and bitshift to assign it to a buffer of type char.
But if I do this, then say,
I want to transmit 3.4,then I can transmit only 3 and not the .4
as I convert form float to long before transmitting.

How can I transmit a float data variable from PC to microcontroller or the vice-versa serially.?
Confused | :confused:

Re: sending and receiving float

Nibu babu thomas4-Jul-06 17:23

Nibu babu thomas

4-Jul-06 17:23

Use...

typedef union
{
   float fFloatVar;
   UCHAR ucFloatByteArray;
}FloatConverter;
 
FloatConverter fc;
fc.fFloatVar = 23.456f;

Now just send the bytes in FloatConverter.ucFloatByteArray one by one.

Now while receiving store each byte into the byte array FloatConverter.ucFloatByteArray and then

float fFloatNumber = FloatConverter.fFloatVar;

I guess this should help you.

Thanks to toxcct...

Nibu thomas
A Developer

Programming tips[^] My site[^]

Re: sending and receiving float

thathvamsi4-Jul-06 20:34

thathvamsi

4-Jul-06 20:34

thanks very much.
It works perfectly.
thanks for ur help.

Re: sending and receiving float

Jörgen Sigvardsson4-Jul-06 23:48

Jörgen Sigvardsson

4-Jul-06 23:48

Or how about:

unsigned char* byteptr = (unsigned char*)&floatVal;
for(int i = 0; i < sizeof(float); ++i)
   Send(byteptr[i]);

You can use this technique for any struct/basic type, without having to create a "converter" union for each type.

--
For External Use Only

c control list

kamalesh824-Jul-06 16:34

kamalesh82

4-Jul-06 16:34

I need to use a ccontrol list to show data, after pressing button 'showdata'.....in a old project(DIALOG BASED).....the problem is that..... in this project i can't use class wizard.

kamalesh

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