Pushpins with numbers on them.

Pushpins with numbers on them.

• Bloom326984

  jmkueter wrote:

  I keep getting errors when I try to run the code, says can't index pixelated image Then the image becomes locked and I can't rename/delete Is there something wrong with my code or certain types of gif's Thanks, Jason

  This is a GDI+ thing - There are workarounds posted all over the net, but you could either use a JPG as the base image, or use something like the following to create a new instance of your image that is not indexed:

  try

  {

  canvas = Graphics.FromImage(renderImage);

  }

  // GDI pukes when you try to get a graphics object from an index image

  // so here's the hack!

  catch

  {

  Bitmap tmpBmp = new Bitmap(renderImage.Width, renderImage.Height);

  canvas = Graphics.FromImage(tmpBmp);

  canvas.DrawImage(renderImage, new Rectangle(0, 0, tmpBmp.Width, tmpBmp.Height), 0, 0, tmpBmp.Width, tmpBmp.Height, System.Drawing.GraphicsUnit.Pixel);

  }

  
  
  

• LeoXue

  thats not true, i got all of them in my cache, but i dont use it, because they look ugly.

  clear your cache, calc a new route with many points and look again in your cache, you'll find them there.

  
  
  

• mkfl

  Thanks Dave,

  I belive now that these are dynamically created (I could only find the master blank one in my IE Cache)....

  I could well do with some sample code to steer me in the right direction in order to create this numbered pushpins...

  Thanks in advance...

  
  

• Pwint

  JeffK_ wrote:

  agreed. Ok, to crerate a dynamic image, create a new aspx named 'Image.aspx' then insert following code into the Page_Load Method: Bitmap bmp; Font font; bmp = (Bitmap)System.Drawing.Image.FromFile(Path.Combine(Server.MapPath("images"),"circle.gif")); gfx = Graphics.FromImage(bmp); font = new Font("Arial",7); gfx.DrawString("1",fnt2,Brushes.Black,0,0); gfx.Dispose(); Response.ContentType="image/jpeg"; bmp.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg); i did not post the #using stuff, should be obvious what to add to the file.

  Yup, pretty much the way I would have gone - Pass in a QueryString param for the "Number" you want to display and throw that into the DrawString and you're off

  
  
  

• Avada Kedavra

  I keep getting errors when I try to run the code, says can't index pixelated image Then the image becomes locked and I can't rename/delete Is there something wrong with my code or certain types of gif's

  Thanks,
  Jason

  
  

• CJW99

  It's highly possible they are dynamically generated, certainly wouldn't seem to make sense to do otherwise. All you need is a base image, then use GDI+ to overaly the numbers, based on a param to the image .... Assuming you are using .Net

  If you need help with this I could whip something up pretty quickly to do this.

  
  
  

• Chrismanster

  agreed.

  Ok, to crerate a dynamic image, create a new aspx named 'Image.aspx'

  then insert following code into the Page_Load Method:

  Bitmap bmp;
  Font font;
  bmp = (Bitmap)System.Drawing.Image.FromFile(Path.Combine(Server.MapPath("images"),"circle.gif"));
  gfx = Graphics.FromImage(bmp);
  font = new Font("Arial",7);

  gfx.DrawString("1",fnt2,Brushes.Black,0,0);
  gfx.Dispose();

  Response.ContentType="image/jpeg";
  bmp.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);

  i did not post the #using stuff, should be obvious what to add to the file.

  
  
  

• AlanKohl

  Here's the url:

  http://local.live.com/i/pins/poi_usergenerated.gif

  
  

• johnvarney

  Just because they are in your cache does not mean they are not dynamically created/rendered as opposed to static images. Whats in your cache is what your browser displayed, who's to say they were not dynamically created

  
  
  
• Pushpins with numbers on them.