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Hi,
I have a table in oracle which hhas picture stored in it.I had used D2K forms to insert picture into the table. Now i want to display this picture from the database to my picture control in vc++ at runtime. How do we load a picture to the picture controlin the form at runtime.
Please help..
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I'm not sure about it,cause I don't know about oracle.
You can first read file and put the string into your database,then if u want to reuse it ,read the string from database and put the string into a file with .jpg or .bmp extention.
Hope it helps
Mazy
"So,so you think you can tell,
Heaven from Hell,
Blue skies from pain,...
How I wish,how I wish you were here."
Wish You Were Here-Pink Floyd-1975
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Hey
First: I know how crate custom brush (logical or bitmap) but i don't know how make it transparent - please help me with it.
Second: I don't know how create a custom pen - from bitmap or logical - so if you know how to do it please tell me.
Thx for any answer.
PozdMIT
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umm... to make the brush transparent i think you use CDC function SetBkMode and in the parameter put TRANSPARENT. (eg. SetBkMode(TRANSPARENT)). to create a pen you use CPen then instantiate it. like CPen mBluePen. then after that use mBluePen.CreatePen()... try check the stuff to put inside coz i kinda forgot. just try it out. i think thats right. 
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ok but this in not what I wont know
I create my own custom brush from bitmap - using CreatBrushPattern(&Bitmap). On this brush function SetBkMode doesn't work  - I don't know why.
about pen - I know how create "normal pen" but I wont creaet my own pen - eg. from bitmap - I don't know how to do it - on online help I found only info that if must seek info about this on online documentation. But nothing I can't find.
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Where would be the purpose of a transparent brush...?
Or do you mean semi-trans...?
"An expert is someone who has made all the mistakes in his or her field" - Niels Bohr
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ofcorse I mean semi-trasparent brush
eg.
color white transparent
other colors not
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In that case you do NOT mean a semi transparent brush, and it's easy to say 'of course', but
a/ there IS such a thing as a transparent brush, and it has it's uses,
b/ why should we know what you mean if you don't say it ?
You can do a partly transparent brush by using a mask and doing three blt's, the details are in MSDN, on this site ( I think ) and in my WDJ article, which is online at www.wdj.com, in the Sept 2001 issue.
I think it's probably quicker to do it with direct pixel access, that is how I did it when I implimented the ability to draw an area freehand in an image and then use it as a brush in my paint program.
Christian
I have come to clean zee pooollll. - Michael Martin Dec 30, 2001
Picture the daffodil. And while you do that, I'll be over here going through your stuff.
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thanks for answer
but for me this metod propobly will be to slow because I must show more then 20.000 regions with brush and it must be quick
with "system brush" it works fine - very fast
with my custom brush without trasparent works fine - very fast too
but i will try your metod maybe it will be fast enough
one more time thx for answer
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sorry for anonymous
I forgot login
previous message was from me
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Given that a transparent brush does nothing, I assume you mean how to have a brush with an alpha value ( partly transparent throughout ), or masked ( fully transparent in part ).
The answer to both is that it's easy with GDI+, but needs to be done by hand, pixel by pixel using only GDI. If you can't use GDI+, you'll need access to the bits of the image, preferably by using a DIBSection, and then write code to do your alpha merging by hand. You can do the blitting with a mask without direct pixel access, but I tend to think the direct access method is faster, having done it myself both ways.
Christian
I have come to clean zee pooollll. - Michael Martin Dec 30, 2001
Picture the daffodil. And while you do that, I'll be over here going through your stuff.
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Hi,I want to monitor the actual downstream Bitrate, on Win 2k pro.
Thank you
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I have a report view which I want to be able to sort.
I must have something wrong with the way I use
a pointer to a function. Here is the code:
- - - - - - - - - - - - -
This _should_ be in the global namespace, at least
when I start to enter "::" MSVC6++ offers me a list
of possible options and CompareFunc is listed there
and I can pick it
int CALLBACK CompareFunc(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort)
{
if (lParam1 > lParam2) {
return -1; }
else {
return 0; }
}
- - - - - - - - - - - - -
This piece of code is inside a class derived from
ClistView
ListView_SortItems(
m_hWnd,
::CompareFunc,
0);
- - - - - - - - - - - - -
...and then I get error message:
error C2039: 'CompareFunc' : is not a member of '`global namespace''
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MVH wrote:
at least
when I start to enter "::" MSVC6++ offers me a list
of possible options and CompareFunc is listed there
and I can pick it
Sometimes it gives you some stuff things.
Just guess:put your CompareFunc at the top of your CListView class,somewhere
before the place you use SortItems
Mazy
"So,so you think you can tell,
Heaven from Hell,
Blue skies from pain,...
How I wish,how I wish you were here."
Wish You Were Here-Pink Floyd-1975
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That is exacly how I have done that.
I've even changed the CompareFunc to
int CALLBACK ::CompareFunc(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort)
and it still says the same. This ain't fun! *frown*
Any suggestions what to do or try?
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This is sample code in MSDN:
static int CALLBACK
MyCompareProc(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort)
{
CListCtrl* pListCtrl = (CListCtrl*) lParamSort;
CString strItem1 = pListCtrl->GetItemText(lParam1, 0);
CString strItem2 = pListCtrl->GetItemText(lParam2, 0);
return strcmp(strItem2, strItem1);
}
void snip_CListCtrl_SortItems()
{
extern CListCtrl* pmyListCtrl;
pmyListCtrl->SortItems(MyCompareProc, (LPARAM) pmyListCtrl);
}
I also check an example of CALLBACK,I put it after constructor of view class
and it work fine
Mazy
"So,so you think you can tell,
Heaven from Hell,
Blue skies from pain,...
How I wish,how I wish you were here."
Wish You Were Here-Pink Floyd-1975
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Are you by chance defining your CompareFunc function inside some namespace or class? I've tried to replicate your problem but everything works fine (i.e. CListCtrl::SortItems merrily accepts ::CompareFunc.) Could you post a little more code to see the thing in context?
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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I am getting a nagging feeling that I have misunderstood something totally wrong here...
This the file with the middle part snipped:
int CALLBACK CompareFunc(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort)
{
// don't take this part seriously
if (lParam1 > lParam2) {
return -1; }
else {
return 0; }
}
// WsInfoView.cpp : implementation of the CWsInfoView class
//
#include "stdafx.h"
#include "WsInfo.h"
...yadda yadda yadda....
and then the ending of the file:
void CWsInfoView::DoFullList()
{
CListCtrl& ctlList = GetListCtrl();
ctlList.SetExtendedStyle(LVS_EX_GRIDLINES);
<snipped inserting="" items="" into="" the="" report="" view="">
ListView_SortItems(
m_hWnd,
::CompareFunc, 0);
}
CompareFunc is visible in MSVC6++ as "globals"
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Ummm... You have defined CompareFunc at the very beginning of WsInfoView.cpp? If so, please try moving it after the #includes.
I agree with you that the thing should work, but as it doesn't there's no option but to look for the unlikely.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Thank you! It worked after I moved the CompareFunc
after #include "stdafx.h". I dunno why but it did!
I also had time to try that Microsoft example and I
(since I placed the functions the same way as earlier)
got the same error message.
Now I can go and eat in peace!
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Well, the reason for this strange behavior is the manner in which VC++ manages precompiled headers (like "stdafx.h"). For some reason, it seems to ignore everything that comes before the precompiled header inclusion. I think this is even a documented glitch.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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I want to use #pragma warning().But where can I find the corresponding warning specifier?
Thx ahead.
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Here's a complete list of VC++ compiler errors and warnings.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Hi,
I am designing and developing a voice and telephony related project with C programming and TAPI 2.0. I need a voice modem and use this modem to make a phone call. My question is as follows.
After I make a phone call, how, can I know somebody already "picks up" the phone call ? I need to know when or if somebody picks up the phone because my program needs to do audio playback on the phone.
Any response would be appreciated !
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I guess you initiated the call with lineMakeCall. If so, after this function returns providing an HCALL for the call, the callback function the program registers with lineInitialize will start receiving notifications about the progress of the call. The connection establishment is signaled by the LINE_CALLSTATE message with call state param LINECALLSTATE_CONNECTED.
If you're new to TAPI programming you may want to have a look at Michael Dunn's TAPI site (this Michael Dunn is not the Michael Dunn from CP, I think.)
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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