Can VB5 paint a polygon??

Thread View: pl.comp.lang.vbasic

2 messages

[T] Back to Threads [V] Tree View [G] Group Articles

2 total messages Started by Dick van den Hout Sat, 18 Oct 1997 00:00

#69

Author: Dick van den Hout
Date: Sat, 18 Oct 1997 00:00

8 lines
494 bytes



When a triangle, square or polygon is drawed on a form during runtime, 
how can I perform a paint commando like "PAINT(x,y),c" in the ancient 
BASIC ???

Thanks

Re: Can VB5 paint a polygon??

#70

Author: Artur Jarkiewicz
Date: Sat, 18 Oct 1997 00:00

56 lines
2298 bytes

Dick van den Hout wrote:
> 
> When a triangle, square or polygon is drawed on a form during runtime,
> how can I perform a paint commando like "PAINT(x,y),c" in the ancient
> BASIC ???
> 
> Thanks

Hi!

Use FloodFill API Function:

Declare Function FloodFill Lib "GDI" (ByVal hDC As Integer, ByVal X As
Integer, ByVal Y As Integer, ByVal crColor As Long) As Integer

hDC	handle of device context
X	x-coordinate of starting position
Y	y-coordinate of starting position
crColor	color of fill boundary

The FloodFill function fills an area of the screen surface by using the
current brush. The area is assumed to be bounded as specified by the
clrref parameter. The FloodFill function begins at the point specified 
by the nXStart and nYStart parameters and continues in all directions to
the color boundary. 

Parameter	Description

hDC	Identifies the device context. 
X	Specifies the logical x-coordinate at which to begin filling. 
Y	Specifies the logical y-coordinate at which to begin filling. 
crColor	Specifies the color of the boundary. 

Returns

The return value is nonzero if the function is successful. Otherwise, it
is zero, indicating that the filling cannot be completed, that the given
point has the boundary color specified by clrref, or that the point is
outside the clipping region. 

Comments

Only memory device contexts and devices that support raster-display
technology support the FloodFill function. 

Greetings.
Artur.
-- 
  _ | _______________________________________________________________
 / -+-_  ___  ___  _  _ _  ___  ___                                  \ 
|   |/ || _ \/ __)| || \ |/   \| __) Artur Jarkiewicz                 |
|   /_ ||   /\__ \| ||   || | || __) aj...@meil.pw.edu.pl             |
|  /___||_\_\(___/|_||_\_|\___/|___) http://www.meil.pw.edu.pl/~ajark |
 \___________________________________________________________________/

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads