Gluing images

[Natter]

Hi, !

Using the FW Save Screen() function, I cut out a certain number of identical fragments from the screen. Then I need to glue them together in a certain order (like puzzles - top, bottom, right, left) and save them to a bitmap file. How can this be done ?

[Antonio Linares]

#define SRCCOPY 13369376

local hDC := oDlg:GetDC()
local hDCMem := CreateComtatibleDC( hDC )
local hBitmap := CreateCompatibleBitmap( hDCMem, nWidth, nHeigth )
local hPrev := SelectObject( hDCMem, hBitmap )
local hBmp, hDib

now you paint your bitmaps on hDCMem this way:
hBmp = ReadBitmap( 0, "name.bmp" )
PalBmpDraw( hDCMem, nRow, nCol, hBmp )

Finally you save it and clean:
DibWrite( cFileName, DibFromBitmap( hBitmap ) )
SelectObject( hDCMem, hPrev )
DeleteObject( hBitmap )
DeleteDC( hDCMem )
oDlg:ReleaseDC()

[Natter]

Thank you, Antonio !

[nageswaragunupudi]

Code: Select all | Expand

function StitchCrops()

   local hWnd, hBmp1, hBmp2, hBmp3, hNew

   hWnd  := GetDeskTopWindow()
   hBmp1 := FWSaveScreen( hWnd, 200,200,400,300 ) // 100x200
   hBmp2 := FWSaveScreen( hWnd, 700,650,900,950 ) // 300x200
   hBmp3 := FWSaveScreen( hWnd, 500,500,650,900 ) // 400x150

   hNew  := FW_MakeYourBitmap( 400, 350, <|hDC|
               FW_DrawImage( hDC, hBmp1, {   0,   0,  200, 100 } )
               FW_DrawImage( hDC, hBmp2, {   0, 100,  200, 400 } )
               FW_DrawImage( hDC, hBmp3, { 200,   0,  350, 400 } )
               return nil
               > )

   FW_SaveImage( hNew, "new.bmp" )

   DeleteObject( hNew )

   XImage( "new.bmp" )

return nil
 

[Natter]

Rao, thank you very much !!! It can be printed in any format. And ate the picture in the size of the screen and if wider too

[nageswaragunupudi]

It can be printed in any format.

Can be saved in any format.

And ate the picture in the size of the screen and if wider too

As the name itself indicates, FWSaveScreen() can extract full or part of what is visible on the screen only and nothing outside the screen.
But the resulting glued image can be larger than the screen.

[Natter]

To use the FW Save Screen() function to print a container larger than the screen, you need to move this container using the :Move method to the screen. Then you can always read the device context of the required fragment. I printed out the map in A1, A0 formats (but there are some subtleties here by synchronously zooming in on the map)

[nageswaragunupudi]

To use the FW Save Screen() function to print a container larger than the screen, you need to move this container using the :Move method to the screen. Then you can always read the device context of the required fragment. I printed out the map in A1, A0 formats (but there are some subtleties here by synchronously zooming in on the map)

YOU ARE RIGHT
I did not suggest this because it is complex.
But glad you found it and did it

[Natter]

To read the device context, you need to fix the screen. What is the best way to do it ?
You can, of course, display msginfo() after each execution of :Move, but it's not pretty