Re: Resizing an image

Re: Wince Crossbin utils windows installer don't works

Re: Lazarus for win64 available for download from sourceforge

Re: About DBGRid+ZEOS in Suse

----- Original Message ----- 
From: "Allies Xposs" <allies_xposs <at> yahoo.com>
To: <lazarus <at> miraclec.com>
Sent: Tuesday, May 22, 2007 11:47 PM
Subject: [lazarus] About DBGRid+ZEOS in Suse

> Need Help....
>  In my DBGRID dataset with ZSquery (Zeos Component) can not show Record 
> (Varchar (4)), But Field Date (P_tgl Date) can Show record data   (Record 
> Blank). Why ?
>  But in Script mysql can Show record :
>  Mysql > Select * from Kelompok
>
>  ------------------------------------------------------------
>  | p_kode | P_Nama        |P_tgl
>  ---------------------------------------------------------
>  | 001      | desc 001       | 2007-05-05
>
>  --------------------------------------------------
>  ...
>  Pls help me .....
>

Sounds similar to this one http://www.freepascal.org/mantis/view.php?id=8731 
which I still can't reproduce.

Jesus Reyes A. 

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Re: Lazarus for win64 available for download from sourceforge

Carlos German Tejero schreef:
> Hi,my name is German Tejero, and my english is very bad.
>  
> I download the lazarus win64 release, and i test it on a Intel Core 2 
> Duo E6400.
> I install the lazdaemon package and i discover a bug, when add a TDaemon 
> or a TDaemonMapper, the uses contains duplicated LResources unit:
>  
> *  uses
>   Classes, SysUtils, LResources, LResources, daemonapp;
> *
> the bug is in the reglazdaemon unit:
> ...
> function TDaemonFileDescriptor.GetInterfaceUsesSection: String;
> begin
>   Result:=inherited GetInterfaceUsesSection+', LResources, daemonapp';
> end;     
> ...
> function TDaemonMapperDescriptor.GetInterfaceUsesSection: String;
> begin
>   Result:=inherited GetInterfaceUsesSection+', LResources, daemonapp';
> end;  
> ...
>  

Thanks for the report. I wonder why nobody else noticed this before. Did 
anybody try out this component at all?

Fixed in r11249 (SVN).

Vincent

Re: Resizing an image

Hi Michael,
Here is how I do it [I'm sure you can customise it to your needs,
factor can also be something like 0.5 (to scale to halfsize)] :)

A.J.

Procedure Scale(P1 : TPicture;Var P2:TPicture;Factor : Real);
Var
	ARect : TRect;
	X,Y : Integer;
Begin
X := Round(P1.Width * Factor);
Y := Round(P1.Height * Factor);
P2.Clear;
P2.BitMap.Width := X;
P2.BitMap.Height := Y;
Arect := Rect(0,0,X,Y);
P2.BitMap.Canvas.StretchDraw(ARect,P1.BitMap);
end;

On 6/1/07, Charl van Jaarsveldt <charlvj <at> gmail.com> wrote:
> Hi Michael,
>
> I am still confused.  I cannot figure out how to get the FPImage drawn. I
> thought perhaps the TImage.canvas.draw() function would do it - the code
> completion shows a draw(int, int, FPCustomImage) method, but when I compile
> it the compiler says it it expects a TGraphic. Sure enough, the TCanvas has
> one that expects TGraphic, and FPCanvas has one with FPCustomImage, but it
> is not marked as overloaded, so I think the compiler assumes it is not
> available.
> I tried to find a way to get a TGraphic object from a FPCustomImage, but no
> success.
>
> Thanks again for the help.
> Charl
>
>
> On 5/31/07, Charl van Jaarsveldt <charlvj <at> gmail.com> wrote:
> > Ah, that would probably explain why I can't find it. 
> >
> > Yeah, I want to keep a cache of images in memory while keeping open the
> possibility of actually saving the cache. Thanks for the help!
> > Charl
> >
> >
> >
> > On 5/31/07, Michael Van Canneyt <michael <at> freepascal.org > wrote:
> > >
> > >
> > > On Thu, 31 May 2007, Charl van Jaarsveldt wrote:
> > >
> > > > Thanks for the pointers. I can't find the extinterpolation unit
> though.
> > >
> > > in the FPC source tree:
> > >
> > > packages/fcl-image/src/extinterpolation.pp
> > >
> > > (it may not be present if you're working with the the 2.0.4 release)
> > >
> > > >
> > > > I think I am getting an idea of how to do what I want. The only thing
> that
> > > > eludes me is how to get the FPImage into the TImage control? The class
> > > > hierarchy seems rather confusing there. 
> > >
> > > If you just want to draw it, simply draw on the TImage canvas, that
> should work.
> > >
> > > But TImage itself has resizing capabilities, the imgview demo shows how
> > > to do this. The disadvantage is that you can't save the resized image,
> > > as far as I know.
> > >
> > > Michael.
> > >
> > > >
> > > > Thanks
> > > > Charl
> > > >
> > > > PS Please excuse my ignorance, this is the first time I am working
> with
> > > > images!
> > > >
> > > > On 5/31/07, Michael Van Canneyt <michael <at> freepascal.org> wrote:
> > > > >
> > > > >
> > > > >
> > > > > On Thu, 31 May 2007, Charl van Jaarsveldt wrote:
> > > > >
> > > > > > Hi,
> > > > > >
> > > > > > What is the best way to resize an image? I am thinking of
> something
> > > > > Java's
> > > > > > Image class has that will return a scaled image, and you can
> decide
> > > > > whether
> > > > > > it should be a good quality or a fast one. I don't necessarily
> want to
> > > > > write
> > > > > > it to a file, just in memory.  (I want to cache images in the
> memory and
> > > > > so
> > > > > > would like to have them much smaller than they are.)
> > > > >
> > > > > There are several resizing alogirthms present in FPC. see the
> > > > > extinterpolation unit.
> > > > > how it happens is: create a canvas, and draw the image on the canvas
> with
> > > > > the correct
> > > > > interpolation.
> > > > >
> > > > > If you want to create a new image in memory, create an
> TFPImageCanvas with
> > > > > the desired
> > > > > size, and draw the original canvas with the correct interpolation
> routine.
> > > > >
> > > > > Michael.
> > > > >
> > > > >
> _________________________________________________________________
> > > > >      To unsubscribe: mail lazarus-request <at> miraclec.com with
> > > > >                 "unsubscribe" as the Subject
> > > > >    archives at
> http://www.lazarus.freepascal.org/mailarchives
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > "I love deadlines. I especially love the whooshing sound they make as
> they
> > > > fly by." - Douglas Adams
> > > >
> > >
> > >
> _________________________________________________________________
> > >      To unsubscribe: mail lazarus-request <at> miraclec.com with
> > >                 "unsubscribe" as the Subject
> > >    archives at
> http://www.lazarus.freepascal.org/mailarchives
> > >
> >
> >
> >
> > --
> > "I love deadlines. I especially love the whooshing sound they make as they
> fly by." - Douglas Adams
>
>
>
> --
>
> "I love deadlines. I especially love the whooshing sound they make as they
> fly by." - Douglas Adams

--

-- 
A.J. Venter
CEO - OutKast Solutions C.C.
http://www.outkastsolutions.co.za
Cell: +27 83 455 9978
Fax: +27 21 413 2800
Office: +27 21 591 6766

Re: Wince Crossbin utils windows installer don't works

new Thread Manager Demo

Hi,

I'm busy writing a Thread Manager demo in Lazarus to help me
understanding threads better. This demo will then serve as a good
example of how to use threads and synchronization. No better way to
learn something than writing code! :)

A quick summary of what I want to do:
-------------------------------------------------------
* You can create a Sync Object by selecting one of the following
types: No Synchronization, Critical Section, Mutex or Semaphore.

* Then you can create as many threads as you want. Default thread
priority is Normal. Each thread counts down from 100% to 0% at which
point the thread is completed.

* A grid will show you all the threads you created. Each grid line
represents a thread.

* You can Stop, Resume or Kill an individual thread.

* You can change an individual thread's Priority (tpIdle thru
tpTimeCritical), though under Linux I know the thread priority is a
integer value. tpXXX values will be displayed in the grid.

* You can also act on all threads: Kill All, Stop All and Resume All.

Questions:
------------------
1. Is there any other synchronization methods that FPC supports?

2. Is there a platform independent way of creating a Mutex? eg: A
CreateMutex() function that maps to each platforms specific
implementation. Something like the TCriticalSection class.

3. Same as (2), but for Semaphores.

--

-- 
Graeme Geldenhuys
General error, hit any user to continue.

Re: new Thread Manager Demo

En/na Graeme Geldenhuys ha escrit:

> Questions:
> ------------------
> 1. Is there any other synchronization methods that FPC supports?
> 
> 2. Is there a platform independent way of creating a Mutex? eg: A
> CreateMutex() function that maps to each platforms specific
> implementation. Something like the TCriticalSection class.

Don't know an answer to these questions but beware: if you use 
TEventObject, the only valid value for timeout in the WaitFor method is 
$FFFFFFFF (i.e. wait forever) under linux.

Bye
--

-- 
Luca Olivetti
Wetron Automatización S.A. http://www.wetron.es/
Tel. +34 93 5883004      Fax +34 93 5883007

Re: new Thread Manager Demo

Graeme Geldenhuys ha scritto:
> Hi,
>
> I'm busy writing a Thread Manager demo in Lazarus to help me
> understanding threads better. This demo will then serve as a good
> example of how to use threads and synchronization. No better way to
> learn something than writing code! :)
>
> A quick summary of what I want to do:
> -------------------------------------------------------
> * You can create a Sync Object by selecting one of the following
> types: No Synchronization, Critical Section, Mutex or Semaphore.
>
> * Then you can create as many threads as you want. Default thread
> priority is Normal. Each thread counts down from 100% to 0% at which
> point the thread is completed.
>
> * A grid will show you all the threads you created. Each grid line
> represents a thread.
>
> * You can Stop, Resume or Kill an individual thread.
>
> * You can change an individual thread's Priority (tpIdle thru
> tpTimeCritical), though under Linux I know the thread priority is a
> integer value. tpXXX values will be displayed in the grid.
>
> * You can also act on all threads: Kill All, Stop All and Resume All.
>
>
> Questions:
> ------------------
> 1. Is there any other synchronization methods that FPC supports?
>
> 2. Is there a platform independent way of creating a Mutex? eg: A
> CreateMutex() function that maps to each platforms specific
> implementation. Something like the TCriticalSection class.
>
> 3. Same as (2), but for Semaphores.
>
>
That would be great ;)

Actually I managed to use base threads, but I'd like to do some cooler 
things with them.