OpenEuphoria

Re: Lable covering up Text Box Mystery

• Posted by "Derek Parnell" <ddparnell at bigpond.com> Jan 08, 2004
• 384 views

----- Original Message ----- 
From: "Ron Austin" <ronaustin at alltel.net>
To: <EUforum at topica.com>
Subject: Lable covering up Text Box Mystery


> 
> 
> My brother and I are working on a project.  He recently sent me his 
> latest version which was missing three or four text boxes.  I called him 
> and he said he could see them just fine.  We are both using WinXP Home 
> and both have 1024 X 768 display.  Here's  a test program I made to 
> illustrate the problem:
> 
> without warning
> include win32lib.ew
> integer  Lbl11,Tabs,Tab1,flag,Age,lablen
> 
> flag=0 -- flag=10 allows win color to bleed through?
> lablen=60 -- this setting covers causes the lable to cover up the Age 
> control.  Change it to 30 and try it
> 
> constant win=createEx (Window,"Test",0,Center,Center,500,500,0,0)
> setWindowBackColor(win,SkyBlue)
> Tabs  = create  ( TabControl, "", win,0, 0, 500,500, 0 )
> Tab1  = create( TabItem, "Patient",            Tabs,0,0,0,0,0)
> procedure print_it( integer self, integer event, sequence params)
> sequence OldFont
> 
> OldFont = setCreateFont("Courier New",11,Normal,Black)
> Lbl11     = create(LText,"Age",               Tab1,30, 
> 50,lablen,25,flag)
> Age = create(SleText,"",                      Tab1,60,50,30,25,0) 
> end procedure
> setHandler(win, w32HPaint, routine_id( "print_it" ))
> WinMain(win,Normal)
> 
> With lablen set to 60 the label is covering up the text box.  If I 
> change it to 30 than I can see the text box.
> 
> My brother discovered that if he sets flag=10 it allows the main window 
> color to show through the tab.  When he did that it shows the blue color 
> on both sides of the text box, but the box is still visable.  When I try 
> it the entire text box is covered up with the blue.  Can someone please 
> explain what is happening here?  Could it have something to do with our 
> respective video cards?
> 

You are doing a few unorthodox things here. I think that what you are Trying to
do is give the label a blue background. Here is some code that does this better.
The length of the label, when set to 60 means that it would overlay the edit box,
so its not suprising that you can't see the editbox which is underneath the
label. Note, the label is NOT transparent.

Creating controls within a paint handler will cause problems later on. It is not
recommended.

-------------

without warning
include win32lib.ew
integer  win, Lbl11,Tabs,Tab1,flag,Age,lablen,labhgt

-- flag=10 allows win color to bleed through?
-- Yes it does. This flags defines the label under user control, meaning you
have to
-- explictly draw what you want to see.
flag=SS_USERITEM --10

lablen=90 -- I've changed to to 90 to show you the effect better.
labhgt=35 

-- Create the controls ONCE, not every time the window gets repainted.
win=createEx (Window,"Test",0,Center,Center,500,500,0,0)
Tabs  = create  ( TabControl, "", win,0, 0, 500,500, 0 )
Tab1  = create( TabItem, "Patient",            Tabs,0,0,0,0,0)
Lbl11 = create(LText,"",               Tab1,30, 45,lablen,labhgt,flag)
Age = create(SleText,"",                      Tab1,60, 50,30,25,0) 

-- Change the font for just the controls you want, not all controls.
setFont(Lbl11,"Courier New",11,Normal)
setFont(Age,"Courier New",11,Normal)

-- Ensure 'Age' is on top of its label.
moveZOrder(Age, HWND_TOP) 


procedure print_it( integer self, integer event, sequence params)
    sequence lExtent
    sequence lTextSize

    -- Get the current size of the label.
    lExtent = getCtlSize( Lbl11)
    -- Set the color to use as blue.
    setPenColor(Lbl11, SkyBlue)
    -- Paint a blue rectangle over the entire label
    drawRectangle(Lbl11,1, 0, 0, lExtent[1],lExtent[2])
    -- Get the size of the text
    lTextSize = getTextExent(Lbl11, "Age")
    -- Now paint on the text for the label (vertically centered)
    wPuts({Lbl11, 1, floor((lExtent[2] - lTextExtent[2])/2) -1 }, "Age")    
end procedure

setHandler(win, w32HPaint, routine_id( "print_it" ))
WinMain(win,Normal)