Разработка компонентов в DELPHI. Вощинская Г.Э. - 14 стр.

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ɧɨ ɧɟ ɭɤɚɡɵɜɚɬɶ, ɧɚɩɪɢɦɟɪ MyObject.Items[i]:=1.5 ɛɭɞɟɬ ɷɤɜɢɜɚ-
ɥɟɧɬɧɨ MyObject[i]:=1.5.
2.3. Ɍɢɩɵ ɫɜɨɣɫɬɜ
ȼɨ ɜɪɟɦɹ ɩɪɨɟɤɬɢɪɨɜɚɧɢɹ ɨɩɭɛɥɢɤɨɜɚɧɧɵɟ ɫɜɨɣɫɬɜɚ ɤɨɦɩɨɧɟɧɬɚ ɩɨ-
ɹɜɥɹɸɬɫɹ ɜ ɂɧɫɩɟɤɬɨɪɟ ɨɛɴɟɤɬɨɜ. ɋɩɨɫɨɛɵ ɨɬɨɛɪɚɠɟɧɢɹ ɢ ɪɟɞɚɤɬɢɪɨɜɚɧɢɹ
ɫɜɨɣɫɬɜɚ ɜ ɂɧɫɩɟɤɬɨɪɟ ɨɛɴɟɤɬɨɜ ɡɚɜɢɫɹɬ ɨɬ ɬɢɩɚ ɫɜɨɣɫɬɜɚ.
ȼ Delphi ɫɭɳɟɫɬɜɭɟɬ ɧɟɫɤɨɥɶɤɨ ɫɬɚɧɞɚɪɬɧɵɯ ɪɟɞɚɤɬɨɪɨɜ ɫɜɨɣɫɬɜ. Ɋɟ-
ɞɚɤɬɨɪɵ ɫɜɨɣɫɬɜ ɨɩɪɟɞɟɥɹɸɬ ɮɭɧɤɰɢɨɧɢɪɨɜɚɧɢɟ ɩɪɚɜɨɣ ɱɚɫɬɢ ɫɬɪɚɧɢɰɵ
Property ɜ ɂɧɫɩɟɤɬɨɪɟ ɨɛɴɟɤɬɨɜ. ɇɚɢɛɨɥɟɟ ɪɚɫɩɪɨɫɬɪɚɧɟɧɧɵɟ ɪɟɞɚɤɬɨɪɵ
ɨɩɢɫɚɧɵ ɜ ɬɚɛɥɢɰɟ 3.
Ɋɟɞɚɤɬɨɪɵ ɫɜɨɣɫɬɜ, ɞɨɫɬɭɩɧɵɟ ɜ ɂɧɫɩɟɤɬɨɪɟ ɨɛɴɟɤɬɨɜ Ɍɚɛɥɢɰɚ 3
Ɍɢɩ ɫɜɨɣɫɬɜɚ Ɉɩɢɫɚɧɢɟ ɪɟɞɚɤɬɨɪɚ ɫɜɨɣɫɬɜ ɉɪɢɦɟɪ
Height
ɉɪɨɫɬɨɣ ɉɪɨɫɬɵɟ ɡɧɚɱɟɧɢɹ ɫɜɨɣɫɬɜ, ɬɚɤɢɟ ɤɚɤ ɱɢɫɥɚ,
ɫɬɪɨɤɢ ɢ ɬɨɦɭ ɩɨɞɨɛɧɨɟ, ɪɟɞɚɤɬɢɪɭɸɬɫɹ
ɩɪɹɦɨ ɜ ɫɬɪɨɤɟ ɫɜɨɣɫɬɜɚ
Color
ɉɟɪɟɱɢɫɥɢ-
ɦɵɣ
ȼɫɟ ɩɟɪɟɱɢɫɥɢɦɵɟ ɡɧɚɱɟɧɢɹ, ɨɩɪɟɞɟɥɟɧɧɵɟ
ɞɥɹ ɬɢɩɚ, ɨɬɨɛɪɚɠɚɸɬɫɹ ɜ ɨɤɧɟ ɤɨɦɛɢɧɢɪɨ-
ɜɚɧɧɨɝɨ ɫɩɢɫɤɚ. Ɂɧɚɱɟɧɢɹ ɜ ɩɟɪɟɱɢɫɥɟɧɢɢ
ɦɨɠɧɨ ɩɟɪɟɛɢɪɚɬɶ, ɞɜɚɠɞɵ ɳɟɥɤɚɹ ɜ ɫɬɪɨɤɟ
ɫɜɨɣɫɬɜɚ
Anchors
Ɇɧɨɠɟɫɬɜɨ ȼ ɫɬɪɨɤɟ ɫɜɨɣɫɬɜɚ ɬɢɩɵ ɦɧɨɠɟɫɬɜ ɩɨɹɜɥɹ-
ɸɬɫɹ ɤɚɤ ɦɧɨɠɟɫɬɜɚ Pascal. Ʉɚɠɞɵɣ ɷɥɟɦɟɧɬ
ɦɧɨɠɟɫɬɜɚ ɩɪɟɞɫɬɚɜɥɟɧ ɜ ɂɧɫɩɟɤɬɨɪɟ ɨɛɴ-
ɟɤɬɨɜ ɨɬɞɟɥɶɧɵɦ ɫɜɨɣɫɬɜɨɦ, ɩɪɢɧɢɦɚɸɳɢɦ
ɡɧɚɱɟɧɢɹ True ɢ False
Ɉɛɴɟɤɬ ɇɚɡɜɚɧɢɟ ɬɢɩɚ ɩɨɹɜɥɹɟɬɫɹ ɜ ɫɬɪɨɤɟ ɫɜɨɣɫɬɜɚ
ɜ ɂɧɫɩɟɤɬɨɪɟ ɨɛɴɟɤɬɨɜ. ȿɫɥɢ ɨɛɴɟɤɬ ɢɦɟɟɬ
Font
14
ɧɨ ɧɟ ɭɤɚɡɵɜɚɬɶ, ɧɚɩɪɢɦɟɪ MyObject.Items[i]:=1.5 ɛɭɞɟɬ ɷɤɜɢɜɚ-
ɥɟɧɬɧɨ MyObject[i]:=1.5.

                           2.3. Ɍɢɩɵ ɫɜɨɣɫɬɜ
      ȼɨ ɜɪɟɦɹ ɩɪɨɟɤɬɢɪɨɜɚɧɢɹ ɨɩɭɛɥɢɤɨɜɚɧɧɵɟ ɫɜɨɣɫɬɜɚ ɤɨɦɩɨɧɟɧɬɚ ɩɨ-
ɹɜɥɹɸɬɫɹ ɜ ɂɧɫɩɟɤɬɨɪɟ ɨɛɴɟɤɬɨɜ. ɋɩɨɫɨɛɵ ɨɬɨɛɪɚɠɟɧɢɹ ɢ ɪɟɞɚɤɬɢɪɨɜɚɧɢɹ
ɫɜɨɣɫɬɜɚ ɜ ɂɧɫɩɟɤɬɨɪɟ ɨɛɴɟɤɬɨɜ ɡɚɜɢɫɹɬ ɨɬ ɬɢɩɚ ɫɜɨɣɫɬɜɚ.
      ȼ Delphi ɫɭɳɟɫɬɜɭɟɬ ɧɟɫɤɨɥɶɤɨ ɫɬɚɧɞɚɪɬɧɵɯ ɪɟɞɚɤɬɨɪɨɜ ɫɜɨɣɫɬɜ. Ɋɟ-
ɞɚɤɬɨɪɵ ɫɜɨɣɫɬɜ ɨɩɪɟɞɟɥɹɸɬ ɮɭɧɤɰɢɨɧɢɪɨɜɚɧɢɟ ɩɪɚɜɨɣ ɱɚɫɬɢ ɫɬɪɚɧɢɰɵ
Property ɜ ɂɧɫɩɟɤɬɨɪɟ ɨɛɴɟɤɬɨɜ. ɇɚɢɛɨɥɟɟ ɪɚɫɩɪɨɫɬɪɚɧɟɧɧɵɟ ɪɟɞɚɤɬɨɪɵ
ɨɩɢɫɚɧɵ ɜ ɬɚɛɥɢɰɟ 3.


      Ɋɟɞɚɤɬɨɪɵ ɫɜɨɣɫɬɜ, ɞɨɫɬɭɩɧɵɟ ɜ ɂɧɫɩɟɤɬɨɪɟ ɨɛɴɟɤɬɨɜ     Ɍɚɛɥɢɰɚ 3
 Ɍɢɩ ɫɜɨɣɫɬɜɚ          Ɉɩɢɫɚɧɢɟ ɪɟɞɚɤɬɨɪɚ ɫɜɨɣɫɬɜ           ɉɪɢɦɟɪ
ɉɪɨɫɬɨɣ         ɉɪɨɫɬɵɟ ɡɧɚɱɟɧɢɹ ɫɜɨɣɫɬɜ, ɬɚɤɢɟ ɤɚɤ ɱɢɫɥɚ, Height
                ɫɬɪɨɤɢ ɢ ɬɨɦɭ ɩɨɞɨɛɧɨɟ, ɪɟɞɚɤɬɢɪɭɸɬɫɹ
                ɩɪɹɦɨ ɜ ɫɬɪɨɤɟ ɫɜɨɣɫɬɜɚ
ɉɟɪɟɱɢɫɥɢ-      ȼɫɟ ɩɟɪɟɱɢɫɥɢɦɵɟ ɡɧɚɱɟɧɢɹ, ɨɩɪɟɞɟɥɟɧɧɵɟ Color
ɦɵɣ             ɞɥɹ ɬɢɩɚ, ɨɬɨɛɪɚɠɚɸɬɫɹ ɜ ɨɤɧɟ ɤɨɦɛɢɧɢɪɨ-
                ɜɚɧɧɨɝɨ ɫɩɢɫɤɚ. Ɂɧɚɱɟɧɢɹ ɜ ɩɟɪɟɱɢɫɥɟɧɢɢ
                ɦɨɠɧɨ ɩɟɪɟɛɢɪɚɬɶ, ɞɜɚɠɞɵ ɳɟɥɤɚɹ ɜ ɫɬɪɨɤɟ
                ɫɜɨɣɫɬɜɚ
Ɇɧɨɠɟɫɬɜɨ       ȼ ɫɬɪɨɤɟ ɫɜɨɣɫɬɜɚ ɬɢɩɵ ɦɧɨɠɟɫɬɜ ɩɨɹɜɥɹ- Anchors
                ɸɬɫɹ ɤɚɤ ɦɧɨɠɟɫɬɜɚ Pascal. Ʉɚɠɞɵɣ ɷɥɟɦɟɧɬ
                ɦɧɨɠɟɫɬɜɚ ɩɪɟɞɫɬɚɜɥɟɧ ɜ ɂɧɫɩɟɤɬɨɪɟ ɨɛɴ-
                ɟɤɬɨɜ ɨɬɞɟɥɶɧɵɦ ɫɜɨɣɫɬɜɨɦ, ɩɪɢɧɢɦɚɸɳɢɦ
                ɡɧɚɱɟɧɢɹ True ɢ False
Ɉɛɴɟɤɬ          ɇɚɡɜɚɧɢɟ ɬɢɩɚ ɩɨɹɜɥɹɟɬɫɹ ɜ ɫɬɪɨɤɟ ɫɜɨɣɫɬɜɚ Font
                ɜ ɂɧɫɩɟɤɬɨɪɟ ɨɛɴɟɤɬɨɜ. ȿɫɥɢ ɨɛɴɟɤɬ ɢɦɟɟɬ

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