On 07/04/2012 12:06 AM, Kevin Fishburne wrote: > I need to create a 2D array of a structure like this: > > Public Struct Tile_Normals > A[3] As Single ' Normal for quad subsurface A. > B[3] As Single ' Normal for quad subsurface B. > End Struct > > Dim Normals As New Tile_Normals[TileGrid.Size, TileGrid.Size] > > When I try to assign a value to an array element like this: > > Normals[TileGridX, TileGridY].A = Convert.Normal(P1, P2, P3) > > I get a "null object" error. While the 2D array of structures seems to > be created correctly, all its initial values are indeed "null". Do I > need to create the structure or array differently so I can properly > assign values to it? > > Previously I knew all the dimensions of my arrays of structures so they > were statically defined, but in this case I don't know the array > dimensions until after the program has started running. Thanks everyone. >
One addition. I've discovered that if I publicly declare a 2D array of the structure it shows "bad number of dimensions" and "out of bounds" errors when I double-click it after creation: ' Tile grid normal structure. Public Struct Tile_Normals A As Single[] ' Normal for quad subsurface A. B As Single[] ' Normal for quad subsurface B. End Struct Public Normals[32, 32] As Struct Tile_Normals Declaring it as a 1D array it behaves normally: ' Tile grid normal structure. Public Struct Tile_Normals A As Single[] ' Normal for quad subsurface A. B As Single[] ' Normal for quad subsurface B. End Struct Public Normals[32] As Struct Tile_Normals It also doesn't make any difference if I define the structure like this: ' Tile grid normal structure. Public Struct Tile_Normals A[3] As Single ' Normal for quad subsurface A. B[3] As Single ' Normal for quad subsurface B. End Struct Maybe that's related to what's happening, or a separate issue? -- Kevin Fishburne Eight Virtues www: http://sales.eightvirtues.com e-mail: sa...@eightvirtues.com phone: (770) 853-6271 ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user
