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GDI+ will do this for you, although it may not dither in the way you're hoping.
Dithering is the process you want, that's the word to google to get more info.
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Hey all, Iam currently trying this small example to understand the pointers, arrays,etc. in C.
When I try executing the following , the program breaks inside fruitexec() as it would pass the list FrList sometime and not other time.
Why? Isnt the list passed the right way?
Am I pointing at differnt location?
Any help appreciated.
struct Fr_t<br />
{<br />
<br />
char * name;<br />
<br />
char * colour;<br />
<br />
};<br />
static struct Fr_t g_fr[] =<br />
{<br />
<br />
{<br />
"Apple",<br />
"pink",<br />
<br />
},<br />
{<br />
"Mango",<br />
---<br />
<br />
},<br />
<br />
{<br />
<br />
},<br />
<br />
{<br />
<br />
},<br />
{<br />
0,<br />
0,<br />
0<br />
}<br />
};<br />
<br />
struct FrList_t<br />
{<br />
char * name;<br />
} FrList_s[4];<br />
<br />
all the above structs are declared globally.<br />
<br />
<br />
<br />
static struct Fr_t* pickFr( struct Fr_t *Frtcollection, const char * name ) <br />
{<br />
struct Fr_t * what = 0;<br />
if ( Frtcollection )<br />
{<br />
<br />
for ( what = Frtcollection; what->name; ++what )<br />
{<br />
if ( strcmp( what->name, name ) == 0 )<br />
{<br />
break;<br />
}<br />
}<br />
<br />
}<br />
<br />
return ( what );<br />
}<br />
<br />
<br />
<br />
<br />
int fruitexec(int farm, struct FrList_t * Fr_List)<br />
{<br />
int next_fr = 0;<br />
struct Fr_t* fruit = 0;<br />
--------<br />
------<br />
Fr_List = & (FrList_s[next_fr])<br />
if( FrList_s[next_fr].name )<br />
{<br />
fruit = pickFr( g_fr, Fr_List->name );<br />
}<br />
<br />
printf( "The name is %s.\n", FrList_s[next_fr].name );<br />
<br />
<br />
-------<br />
---------<br />
}<br />
in main, we assign <br />
{<br />
FrList_s[0] = "Mango";<br />
FrList_s[1] = "Apple";<br />
...<br />
....fruitexec(..., Fr_List_s);<br />
}
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thathvamsi wrote: FrList_s[0] = "Mango";
FrList_s[1] = "Apple";
where are you reserving memory for these ?
~RaGE();
I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus
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thathvamsi wrote: static struct Fr_t* pickFr( struct Fr_t *Frtcollection, const char * name )
is static here necessary ?
~RaGE();
I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus
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where do i reserve memory? and how?
if i dont put static, the warning message i get is "no predefined prototype"
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allocating memory:
char *name;
name = new char[5];
as for the function, simply put the prototype of the funtion after your global declaration.
int myfunc(void);
bla...
int myfunc(void)
{
}
Are you writing C or C++ ?
~RaGE();
I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus
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iam writing C.
Do I have to do this for every structure member?
is that why you think the code is breaking?
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thathvamsi wrote: Do I have to do this for every structure member
Yes. Because
char *str;
str="Hello";
simply does not work. You háve to allocate memory somewhere for your strings.
char str[5];
str="Hello";
thathvamsi wrote: is that why you think the code is breaking
Not only (see Mickael's comment). This is something that will cause your app to crash asa it can compile.
~RaGE();
I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus
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Rage wrote: char *str;
str="Hello";
simply does not work.
Sure it does. The string literal "Hello" resides at a static memory location that str points to.
Rage wrote: char str[5];
str="Hello";
Are you kidding (str is not an l-value)? 
"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15
"Judge not by the eye but by the heart." - Native American Proverb
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DavidCrow wrote: Are you kidding
I was too lazy to strcpy.
~RaGE();
I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus
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Your type and variable names are really confusing, but I think the problem is you're mixing up FrList_t and Fr_t in your pointer types.
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HI all,
I want to get notified when we change from 1 doc/view to other in a MDI application. Thanks in advance.
Regards
Gan
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create a new MDI app, then copy code to right places.
there are lots of modifications for a large project.
The work depends on your expeirence - I don't think there is any good method to do that.
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I think you completely misunderstood his question...
~RaGE();
I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus
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Maybe with OnActivateView or OnActivateFrame ?
~RaGE();
I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus
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I have a property sheet ,
I am not able to process the WM_CTLCOLOR msg for the tabes in the sheet
can anyone , I am also not able to process the WM_KEYUP message
can anyone tell me how to do that for property windows.
take care
vikas
Vikas Amin
EATON
PUNE
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(1)there is no simple method to change table color of sheet - some people use "owner-draw" to do that.
(2)is the message for sheet or controls on sheet or pages?
microsoft blocks some key messages for edit-box etc. in MFC dialog, property-sheet and property-page, I don't know why they do that.
for a controls: try PreTranslateMessage(...) to see if the message is processed, otherwise, go to its parent (sheet or pages) to get the message then post it to the control - I did this in Win95/98 time.
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I m trying to capture particular key combination (For e.g ctrl + s to Save) and then i want to execute my piece of code before call goes to actual " Save " routine ?
Can any1 help me ...?
vaibhav
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You need to install a KeyBoardHook to achieve this.
Nobody can give you wiser advice than yourself. - Cicero
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You have to filter very "WM_KEYDOWN" message and check whether "CTRL + S" is happend.
For that you can override "PreTranslateMessage(pMsg)" .
Plz see the code snippet you have to add in "PreTranslateMessage(pMsg)".
if ( WM_KEYDOWN == pMsg->message && pMsg->wParam == 0x53 /* 'S' */)
{
if ( ( ::GetKeyState ( VK_LCONTROL ) & KF_UP ) ||
( ::GetKeyState ( VK_RCONTROL ) & KF_UP ) )
{
// Ctrl + s pressed. Write ur code here.
}
}
return CDialog::PreTranslateMessage(pMsg);
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Hi guys.
I used from "EditLabel" property of CListCtrl, but it gets only one parameter (item).I want to edit
other column.
On the other hand, how can I Edit all column of CListCtrl.
Truely yours.
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The CListCtrl class only allows you t edit the one column, you probably want some sort of grid control.
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use BOOL SetItem(
int nItem,
int nSubItem, // index of column that you need to edit.
UINT nMask,
LPCTSTR lpszItem, // value that you need to change.
int nImage,
UINT nState,
UINT nStateMask,
LPARAM lParam
);
good luck!
i love vc!This will appear at the
end of messages you post
to the Code Project
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Hello!!
When I try to select an item using comboName.SelectString(-1, str) then different item which is before str but starting with the same characters of str is selected.
How to fix it?
Any help will be greatly appreciated!!
Thanks & Regards,
Suman
code:
----
m_cmbConfig.SelectString(-1,configName);
where configName = "IF2115b"
it selects IF2115br95br instead of selecting IF2115b
-- modified at 19:10 Tuesday 14th November, 2006
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MSDN:
Searches for a string in the list box of a combo box, and if the string is found, selects the string in the list box and copies it to the edit control.
A string is selected only if its initial characters (from the starting point) match the characters in the prefix string
So what you describe seems perfectly legal from the CComboBox point of view...
Use FindStringExact and then SetCurSel using what the find function returned to avoid that behaviour.
~RaGE();
I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus
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