FiveTech Software tech support forums

Fafi,

You could use SetPixel( hDC, nRow, nCol ) to paint the pixels.

Marc, To build a magnifier simply use GetPixel( hDC, nXPos, nYPos ) --> nRGBColor to read the pixels and SetPixel( hDC, nXPos, nYPos, nRGBColor ) to paint them. If you read 1 pixel, then you could write four pixels for it. This way you magnify the image. There is a way to ...

... modificar el pixel tienes que cargarlo en un hDC, que no quiere decir que tengas que visualizarlo: local hOld := SelectObject( oWnd:hDC, hBitmap ) SetPixel( oWnd:hDC, ... ) Guardar el bitmap a disco nuevamente SelectObject( oWnd:hDC, hOld ) Si explicas un poco más lo que quieres hacer, podemos ...

... IF FILE(car) If( hBitmap != nil, ( DeleteObject( hBitmap ), hBitmap := nil ),) hBitmap := readbitmap( 0, car ) SetPixel( hBitmap, 0, 0, rgb(255,0,0) ) cim:=hBitmap ENDIF RETURN(cim)

I've had better luck using the LineTo function. Using SetPixel made the signature look very "dotted". Something like this sample works very nicely... #include "FWCE.ch" #include "DLL.ch" function Main() local oWnd, ...

... ) to save any window, dialog or control image as a BMP file. All is needed is a sample that uses bLClicked, bMMoved and bLButtonUp DATAs to SetPixel( oWnd:hDC, nRow, nCol, nRGB( 255, 255, 255 ) ) and paint the pixels signature as pressed and later on save it to disk.

Antonio, A while back I asked about capturing signatures on the handheld. You suggested it may be easy to do using mouse events and setpixel(). I put together a little program using FWH to see if I could make it work on the desktop. The problem is when dragging the mouse the pixels set are ...

Randal,

We have not build a sample yet, but you can use MouseMove events to SetPixel( nRow, nCol ) the touched pixels and finally create a bitmap to save from the hDC.

Paul,

To capture a signature its not difficult. Just a empty window which detects mouse move events and call SetPixel() to do the drawing. Then it could be saved as a BMP file.

For a JPG file we need an additional routine, probably a google search may help.