Question about DrawImage on Image

Discussion in 'Questions (Windows Mobile)' started by DaveW, Nov 6, 2008.

  1. DaveW

    DaveW Active Member Licensed User

    Must be a simple newbie thing, but I have found that:

    drawer.New1("form1",False)
    drawer.DrawImage1(imagelist1.Item(0),rectsrc.Value,rectdst.Value,False)

    works but

    drawer.New2(image1,B4PObject(5))
    drawer.DrawImage1(imagelist1.Item(0),rectsrc.Value,rectdst.Value,False)

    does not. The second version gives an error "variable main.image1 was not assigned any value."

    if I put

    bmp.New2(100,100)
    image1.Image = bmp.Value

    before it, it does work. I don't understand that. Image1 is a control on the form, it's *there*, just like the form, so why does it have to be assigned a value? The need for image1.image = bmp.value seems to imply that Image1 is not an 'image' in it's own right, it is just a frame that can hold images.

    Am I missing something or not understanding the situation?
     

    Attached Files:

    Last edited: Nov 6, 2008
  2. agraham

    agraham Expert Licensed User

    You've got it in one! The Image control is a visible container that draws bitmaps on the screen. The Drawer draws on bitmaps, not on the Image control. You can make a new Bitmap, draw on it and then assign it to an Image for display, you don't have to draw on it when it is in an Image control as a Bitmap exists in its own right.
     
  3. DaveW

    DaveW Active Member Licensed User

    I hate when I am right :sign0148: I just wish it had not taken about 6 hours to work it out!

    As always, thanks for the speedy and cheerful answer :)
     
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