Bitte entschuldigen Sie mein Deutsch.

Mám vytvořený PaintBox o rozměrech 800 x 600.
Zeichnen Sie das Bild, an dem sie bisher unbekannte Dimensionen.

Ich muss irgendwie bestimmen die minimale und maximale positionieren Sie den Cursor zum Zeitpunkt der Zeichnung, und dann automatisch zuschneiden nur den Teil, der gezeichnet wird.

Vielen Dank

Hallo danten...

Willkommen, Welcome

Du kannst auch in Englisch schreiben. You also can write in English.

Sometimes it´s enough to use the Google translator. Please use always the same language.



Questions:
- You want to know this Rect ?
- Paint you this Rect by yourself ?
- What you mean with positioning the Cursor ?

Vielen Dank, aber ich bin aus der Tschechischen Republik und den Google-Übersetzer.
Thank you but I'm from Czech Republic and use the google translator.

I think the translation to english is better...

It´s not a Problem... we help you. What about the questions ?

I think you will have to scan the pixels of the canvas line by line (Canvas.Pixels or ScanLine can be used for this). Then you need to remember the first and the last occurence of a different color, on the X- and on the Y-axis. The resulting rect is limited by these 4 values.

Dann mal ahoj.

Scanline is faster then Canvas.Pixels

Ahoj

Creating a project in which the user can draw a picture to RichEdit.
The position of "Row" and "Count" is automatically created to the page Paintbox.
At this Paintbox user will draw. Once you finish drawing and clicks the "Enter", so I need to crop the image automatically and only the coordinates, where an image and discard the rest.
It is unnecessary to file a 100 x 100 pixel screen takes up the size as 800 x 600 pixels.

Trying to get coordinates Mouse_Min_Top, Mouse_Max_Top, Mouse_Min_Left, Mouse_Max_left.
Once I know these coordinates, the problem is not crop the image.

Please show a little code.
Thank you very much

Zitat:

the problem is not crop the image.

...ok. Do you want to save the cutted Part to a File ? Which Format ?

BMP please.