MapObjects Connection

 

Changes for Delphi 4.0

Applies to: MapObjects 1.x

As noted through initial testing, porting your Delphi 3.x applications to 4.0 will require a few changes. Both are relatively straight forward.

  • Rebuild the MapObjects_TLB.pas wrapper file.
  • Remove the MapLayer draw events and replace them with the new definitions. All hDC declarations have been changed to a Cardinal (32-bit signed Integer) type. The changes are as follows:
    •

Delphi 3.x - procedure Map1BeforeLayerDraw(Sender: TObject; index: Smallint; hDC: Integer);
Delphi 4.0 - procedure Map1BeforeLayerDraw(Sender: TObject; index: Smallint; hDC: Cardinal);

Delphi 3.x - procedure Map1AfterLayerDraw(Sender: TObject; index: Smallint; canceled: Wordbool; hDC: Integer);
Delphi 4.0 - procedure Map1AfterLayerDraw(Sender: TObject; index: Smallint; canceled: WordBool; hDC: Cardinal);

Delphi 3.x - procedure Map1BeforeTrackingLayerDraw(Sender: TObject; hDC: Integer);
Delphi 4.0 - procedure Map1BeforeTrackingLayerDraw(Sender: TObject; hDC: Cardinal);

Delphi 3.x - procedure Map1AfterTrackingLayerDraw(Sender: TObject; hDC: Integer);
Delphi 4.0 - procedure Map1AfterTrackingLayerDraw(Sender: TObject; hDC: Cardinal);