DC of the window

[Natter]

Hi,

There are several .png files. I need to get the DC of each of these files and put it in a specific position on my application window. How can I do this ?

[Antonio Linares]

Dear Yuri,

A DC (device context) belongs to a window, not to a PNG file.

I guess that you have several PNG files and you want to paint them on a window, is this correct ?

[Natter]

Yes !

[Antonio Linares]

Is it an animation ? I mean, do you want to paint them one after another, or just paint them on different locations ?

Do you need them as controls or just to paint them from the ON PAINT of the window ?

[Natter]

just paint them on different locations

just to paint them from the ON PAINT of the window

[Antonio Linares]

oWnd:bPainted := { || oWnd:DrawImage( cPngFile, aRect )

[Natter]

Method oWnd:DrawImage( cPngFile, aRect ) works. Is it possible to read from bitmap not all the picture, but only the required fragment ?

[Antonio Linares]

Dear Yuri,

> but only the required fragment ?

A rectangular portion of it ?

what required fragment ?

[Natter]

There is a picture file of 1920x1080. For example, I need a rectangular fragment {900,500,1000,600}

[nageswaragunupudi]

There is a picture file of 1920x1080. For example, I need a rectangular fragment {900,500,1000,600}

Use this function:

Code: Select all  Expand view

function FW_TransformBitmap( hBmp, [aCrop], [nZoom], [nRotate], [nBkClr] )

Example usage:

Code: Select all  Expand view

hBmp := oWnd:ReadImage( cPngFile )[ 1 ]
hCropBmp := FW_TransformBitmap( hBmp, aCropRect )
DeleteObject( hBmp )
oWnd:DrawImage( hCropBmp, aRect )`
DeleteObject( hCropBmp )

[Natter]

Yes, this is what we need.Thanks !