|
why CPaintDC not used in other than OnPaint()?
|
|
|
|
|
for a WM_PAINT messaege we do the drawings withing BeginPaint and EndPaint.
CPaintDC calls BeginPaint at construction time and EndPaint at destruction time.
From MSDN:
CPaintDC objects encapsulate the common idiom of Windows, calling the BeginPaint function, then drawing in the device context, then calling the EndPaint function. The CPaintDC constructor calls BeginPaint for you, and the destructor calls EndPaint. The simplified process is to create the CDC object, draw, and destroy the CDC object. In the framework, much of even this process is automated. In particular, your OnDraw function is passed a CPaintDC already prepared (via OnPrepareDC), and you simply draw into it. It is destroyed by the framework and the underlying device context is released to Windows upon return from the call to your OnDraw function.
SaRath.
"It is your attitude, not your aptitude, that determines your altitude - Zig Ziglar."
My Blog | Understanding State Pattern in C++
|
|
|
|
|
hi sarath,
why it is not working if i use CPaintDc in onLButtonDown()?
|
|
|
|
|
Now again i use from MSDN
From the MSDN
The CPaintDC class is a device-context class derived from CDC
whitesky
|
|
|
|
|
hi all plz tell me with example plz.........
i have a question in four parts:-
i want to know how
1)i can change the style of button ,
2)a picture or like this is placed on button,
3)and can a button is placed on title bar.
4)change the color of button and its text
plz tell me example for this its a request......
plz...........
Ashish Dogra
MCA
Noida
|
|
|
|
|
You can derived CButton class and use WM_DRAWITEM in this event you cahnge color and or draw one bitmap on button with dc handle
whitesky
|
|
|
|
|
sir can you give some example which clear this
Ashish Dogra
MCA
Noida
|
|
|
|
|
set OwnerDraw from Button to true in property window and include AtlImage.h
class CMyButton : public CButton
{
public:
CMyButton();
virtual ~CMyButton();
protected:
virtual void DrawItem( LPDRAWITEMSTRUCT lpDrawItem );
DECLARE_MESSAGE_MAP()
public:
afx_msg void OnClose();
CImage m_Image;
};
CMyButton::CMyButton()
{
m_Image.Load("d:\\0.bmp");
}
CMyButton::~CMyButton()
{
}
BEGIN_MESSAGE_MAP(CMyButton, CButton)
END_MESSAGE_MAP()
void CMyButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItem)
{
CDC dc;
CString Str;
CRect Rect(lpDrawItem->rcItem);
dc.Attach(lpDrawItem->hDC);
GetWindowText(Str);
dc.SetBkMode(0);
if ( (lpDrawItem->itemState& ODS_SELECTED) )
{
dc.FillRect(Rect,&CBrush(RGB(255,255,255)));
dc.FrameRect(Rect,&CBrush(RGB(0,0,255)));
dc.SetTextColor(RGB(0,0,0));
dc.DrawText(Str,Rect,DT_CENTER|DT_SINGLELINE);
}
else
{
dc.FillRect(Rect,&CBrush(RGB(53,97,200)));
dc.FrameRect(Rect,&CBrush(RGB(0,0,0)));
dc.SetTextColor(RGB(255,255,255));
dc.DrawText(Str,Rect,DT_CENTER|DT_SINGLELINE);
}
dc.Detach();
}
</code>
whitesky
|
|
|
|
|
SIR I WANT TO TELL YOU HOW I MDE MY APPLICATION PLZ HELP ME
SIR I MADE AN DIALOG BASED APPLICATION NOW A DIALOG IS AUTOMATICALLY THERE SO I PUT ONE BUTTON ON IT.
ITS CLASS IS CBTNCOLORDLG AND IT IS DERIVED FROM CDIALOG
NOW AS YOU SAY
I MADE ANOTHER CLASS FROM INSERT MENU ->NEW CLASS AND THEN A BOX IS OPENED ON WHICH I USE MFC AS CLASSTYPE,
CMY AS NAME AND ITS BASE CLASS AS CBUTTON.
NOW I USE CLASS WIZARD TO ADD ONDRAWITEM FUNCTION THEN I USE THE CODE AS YOU SEND ,
BUT NOTHING HAPPEN
NOW TELL ME WHEATHER I DECLARE ALL THIS IN RIGHT DIRECTION OR NOT
PLZ TELL ME ...
Ashish Dogra
MCA
Noida
|
|
|
|
|
SIR PLZ I ASK U AGAIN
PLZ..... HELP ME
Ashish Dogra
MCA
Noida
|
|
|
|
|
you asked me and i see but you need to read six paragraph from Chris Maunder
You need to copy this code to your program and it work its not hard You can insert one button n your dialog and declare a variable for this button from type this class CMyButton not button and se BS_OWNERDRAW to true for button now you can see affect
for exmpale
<br />
(1)CMyButton m_Button;<br />
Button.ModifyStyle(0,BS_OWNERDRAW)<br />
whitesky
|
|
|
|
|
thanks sir
it works but sir the text on it is btncolor
even the text on it is click
how can i change it
and sir when i declare anoter variable of type CButton to change font it does not work
Ashish Dogra
MCA
Noida
-- modified at 6:47 Wednesday 5th July, 2006
|
|
|
|
|
What do you nedd exactly?
whitesky
|
|
|
|
|
sir i want to change the font of the text as with its color
but if i try to change the font it does not happen
Ashish Dogra
MCA
Noida
|
|
|
|
|
See
<br />
CFont m_Font;<br />
m_Font.CreateFont(...);<br />
m_YourControl.SetFont(&m_Font);<br />
whitesky
|
|
|
|
|
1)Yes we can change the style of the button. Make it owner draw etc.
2)You can derive a class from CBitmapButton and then put an image in the button
3)yes a button can be place in the title bar (we have minimize, close buttons over there)
4) yes the button of the color and its text can be changed
You can derive a class for the button from CBitmapButton and use LoadBitmap function to load the picture on the button.
You can change the text using the SetWindowText etc
I hope that I made myself clear
Somethings seem HARD to do, until we know how to do them.
 _AnShUmAn_
|
|
|
|
|
TCHAR IncompleteFilePath[MAX_PATH];;
What it mean???
|
|
|
|
|
See TCHAR is defined as follows
#ifdef UNICODE
typedef WCHAR TCHAR;
#else
typedef char TCHAR;
max path is the sum of
_MAX_DIR + _MAX_DRIVE + _MAX_EXT + _MAX_FNAME + _MAX_PATH
it means that there's is char(if ASCII) or wchar_t (if Unicode) array of size MAX_PATH
you can see these definitions, if you press F12 after selecting the requried definition (e.g TCHAR)
SaRath.
"It is your attitude, not your aptitude, that determines your altitude - Zig Ziglar."
My Blog | Understanding State Pattern in C++
|
|
|
|
|
From the MSDN:
TCHAR<br />
The TCHAR data type is a Win32 character string that can be used to describe ANSI, DBCS, or Unicode strings. For ANSI and DBCS platforms, TCHAR is defined as follows:<br />
<br />
typedef char TCHAR;<br />
whitesky
|
|
|
|
|
TCHAR is a character data type definition.
If your program has a UNICODE configuration build, then it is defined as wchar_t. Otherwise it is simply defined as char
So your definition would resolve to:
<br />
char IncompleteFilePath[MAX_PATH];<br /> , for a non-Unicode app.
I Dream of Absolute Zero
|
|
|
|
|
Hello everyone,
If I am given a .lib file, how can I check whether the .lib file is a static library file (archive of obj files) or DLL implicit linking file? I have such confusion since they both use the same extension name .lib.
regards,
George
|
|
|
|
|
 In my project code i hv these two instruction. please explain thease:-
1. m_CDBFile.write(reinterpret_cast<char*>(&m_Header.nNoOfRecords),sizeof(m_Header.nNoOfRecords));
2. nRetVal = MoveFileEx(lpBuffer,lpSystemDir,MOVEFILE_REPLACE_EXISTING);
THANK YOU
|
|
|
|
|
How we can add keep colors to dialog and static control
|
|
|
|
|
|
Return a different color brush from OnCtlColor for static controls
if (pWnd->GetDlgCtrlID () == IDC_STATIC)
{
return CreateSolidBrush (RGB(255,0,0));
}
Somethings seem HARD to do, until we know how to do them.
 _AnShUmAn_
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
