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TDragDropText.htm

TDragDropText.htm 18 KB
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  1. <html>
    2. 

  2. 

  3. <head>
    4. 

  4. <meta http-equiv="Content-Type"
    5. 

  5. content="text/html; charset=iso-8859-1">
    6. 

  6. <meta name="AUTHOR" content="Dieter Steinwedel">
    7. 

  7. <meta name="DESCRIPTION"
    8. 

  8. content="Drag&amp;Drop component for Delphi; description for TDragDropText">
    9. 

  9. <meta name="KEYWORDS"
    10. 

  10. content="delphi, drag, drop, component, text, com, ole, freeware, windows">
    11. 

  11. <meta name="GENERATOR" content="Microsoft FrontPage Express 2.0">
    12. 

  12. <title>Details about TDragDropText</title>
    13. 

  13. </head>
    14. 

  14. 

  15. <body bgcolor="#FFFFEF">
    16. 

  16. 

  17. <table border="0" cellspacing="0" width="600" bgcolor="#008080">
    18. 

  18.     <tr>
    19. 

  19.         <td width="10">&nbsp;</td>
    20. 

  20.         <td width="580">&nbsp;</td>
    21. 

  21.         <td width="10" bgcolor="#FFFFEF">&nbsp;</td>
    22. 

  22.     </tr>
    23. 

  23.     <tr>
    24. 

  24.         <td>&nbsp;</td>
    25. 

  25.         <td><p align="center"><font color="#FFFFFF" size="7"
    26. 

  26.         face="Arial">TDragDropText</font></p>
    27. 

  27.         </td>
    28. 

  28.         <td>&nbsp;</td>
    29. 

  29.     </tr>
    30. 

  30.     <tr>
    31. 

  31.         <td bgcolor="#FFFFEF">&nbsp;</td>
    32. 

  32.         <td>&nbsp;</td>
    33. 

  33.         <td>&nbsp;</td>
    34. 

  34.     </tr>
    35. 

  35. </table>
    36. 

  36. 

  37. <p align="left">&nbsp;</p>
    38. 

  38. 

  39. <p align="left">&nbsp;</p>
    40. 

  40. 

  41. <table border="0" width="600">
    42. 

  42.     <tr>
    43. 

  43.         <td width="10" bgcolor="#008080" height="10">&nbsp; </td>
    44. 

  44.         <td rowspan="2" width="590"><font size="5" face="Arial">Description</font></td>
    45. 

  45.     </tr>
    46. 

  46.     <tr>
    47. 

  47.         <td>&nbsp;</td>
    48. 

  48.     </tr>
    49. 

  49.     <tr>
    50. 

  50.         <td>&nbsp;</td>
    51. 

  51.         <td><font face="Arial"><b><i>TDragDropText</i></b> is a
    52. 

  52.         comfortable and powerful component for COM/OLE drag&amp;drop
    53. 

  53.         operations with plain text. The component is a child-class
    54. 

  54.         from </font><a href="TDragDrop.htm"><font face="Arial"><b><i>TDragDrop</i></b></font></a><font
    55. 

  55.         face="Arial">.</font></td>
    56. 

  56.     </tr>
    57. 

  57.     <tr>
    58. 

  58.         <td height="50">&nbsp;</td>
    59. 

  59.         <td>&nbsp;</td>
    60. 

  60.     </tr>
    61. 

  61. </table>
    62. 

  62. 

  63. <table border="0" width="600">
    64. 

  64.     <tr>
    65. 

  65.         <td width="10" bgcolor="#008080" height="10">&nbsp; </td>
    66. 

  66.         <td rowspan="2" width="590"><font size="5" face="Arial">Important
    67. 

  67.         for Use</font></td>
    68. 

  68.     </tr>
    69. 

  69.     <tr>
    70. 

  70.         <td>&nbsp;</td>
    71. 

  71.     </tr>
    72. 

  72.     <tr>
    73. 

  73.         <td>&nbsp;</td>
    74. 

  74.         <td><font face="Arial">This </font><a href="Index.htm"><font
    75. 

  75.         face="Arial">file</font></a><font face="Arial"> (index.htm)
    76. 

  76.         contains more information about restrictions, the
    77. 

  77.         disclaimer, remarks etc.</font></td>
    78. 

  78.     </tr>
    79. 

  79.     <tr>
    80. 

  80.         <td height="50">&nbsp;</td>
    81. 

  81.         <td>&nbsp;</td>
    82. 

  82.     </tr>
    83. 

  83. </table>
    84. 

  84. 

  85. <table border="0" width="600">
    86. 

  86.     <tr>
    87. 

  87.         <td width="10" bgcolor="#008080" height="10">&nbsp; </td>
    88. 

  88.         <td rowspan="2" width="590"><font size="5" face="Arial">History</font></td>
    89. 

  89.     </tr>
    90. 

  90.     <tr>
    91. 

  91.         <td>&nbsp;</td>
    92. 

  92.     </tr>
    93. 

  93.     <tr>
    94. 

  94.         <td>&nbsp;</td>
    95. 

  95.         <td><font face="Arial"><b>Version 2.10</b> </font><font
    96. 

  96.         color="#808080" face="Arial">published on 06-Jul-1999</font></td>
    97. 

  97.     </tr>
    98. 

  98.     <tr>
    99. 

  99.         <td>&nbsp;</td>
    100. 

  100.         <td><ul>
    101. 

  101.             <li><font face="Arial">Code re-design in result of
    102. 

  102.                 modifications in <b><i>TDragDrop</i></b>;
    103. 

  103.                 handling hasn't changed</font></li>
    104. 

  104.         </ul>
    105. 

  105.         </td>
    106. 

  106.     </tr>
    107. 

  107.     <tr>
    108. 

  108.         <td>&nbsp;</td>
    109. 

  109.         <td><font face="Arial"><b>Version 2.01</b> </font><font
    110. 

  110.         color="#808080" face="Arial">published on 07-Oct-1998</font><font
    111. 

  111.         face="Arial"> </font></td>
    112. 

  112.     </tr>
    113. 

  113.     <tr>
    114. 

  114.         <td>&nbsp;</td>
    115. 

  115.         <td><ul>
    116. 

  116.             <li><font face="Arial">Small invisible bugs fixed</font></li>
    117. 

  117.         </ul>
    118. 

  118.         </td>
    119. 

  119.     </tr>
    120. 

  120.     <tr>
    121. 

  121.         <td>&nbsp;</td>
    122. 

  122.         <td><font face="Arial"><b>Version 2.00</b> </font><font
    123. 

  123.         color="#808080" face="Arial">published on 03-Oct-1998</font></td>
    124. 

  124.     </tr>
    125. 

  125.     <tr>
    126. 

  126.         <td>&nbsp;</td>
    127. 

  127.         <td><ul>
    128. 

  128.             <li><font face="Arial">Total internal re-design due
    129. 

  129.                 to modifications of the super-class, but the
    130. 

  130.                 handling hasn't changed</font></li>
    131. 

  131.         </ul>
    132. 

  132.         </td>
    133. 

  133.     </tr>
    134. 

  134.     <tr>
    135. 

  135.         <td>&nbsp;</td>
    136. 

  136.         <td><font face="Arial"><b>Version 1.00</b> </font><font
    137. 

  137.         color="#808080" face="Arial">published on 06-Aug-1998</font><font
    138. 

  138.         face="Arial"> </font></td>
    139. 

  139.     </tr>
    140. 

  140.     <tr>
    141. 

  141.         <td>&nbsp;</td>
    142. 

  142.         <td><ul>
    143. 

  143.             <li><font face="Arial">First official release</font></li>
    144. 

  144.         </ul>
    145. 

  145.         </td>
    146. 

  146.     </tr>
    147. 

  147.     <tr>
    148. 

  148.         <td height="50">&nbsp;</td>
    149. 

  149.         <td colspan="2">&nbsp;</td>
    150. 

  150.     </tr>
    151. 

  151. </table>
    152. 

  152. 

  153. <table border="0" width="600">
    154. 

  154.     <tr>
    155. 

  155.         <td width="10" bgcolor="#008080" height="10">&nbsp; </td>
    156. 

  156.         <td rowspan="2" width="590"><font size="5" face="Arial">Properties</font></td>
    157. 

  157.     </tr>
    158. 

  158.     <tr>
    159. 

  159.         <td>&nbsp;</td>
    160. 

  160.     </tr>
    161. 

  161. </table>
    162. 

  162. 

  163. <table border="0" cellpadding="3" cellspacing="0" width="600">
    164. 

  164.     <tr>
    165. 

  165.         <td width="10">&nbsp;</td>
    166. 

  166.         <td bgcolor="#008080"><font color="#FFFFFF" size="5"
    167. 

  167.         face="Arial"><strong>inherited properties</strong></font></td>
    168. 

  168.     </tr>
    169. 

  169.     <tr>
    170. 

  170.         <td rowspan="2">&nbsp;</td>
    171. 

  171.         <td bgcolor="#FFFFCC"><a href="TDragDrop.htm#Properties"><font
    172. 

  172.         face="Arial">Click here ...</font></a></td>
    173. 

  173.     </tr>
    174. 

  174.     <tr>
    175. 

  175.         <td bgcolor="#FFFFEF">&nbsp;</td>
    176. 

  176.     </tr>
    177. 

  177.     <tr>
    178. 

  178.         <td>&nbsp;</td>
    179. 

  179.         <td bgcolor="#008080"><a name="Lines"><font
    180. 

  180.         color="#FFFFFF" size="5" face="Arial"><b>Lines</b></font></a><font
    181. 

  181.         color="#FFFFFF" size="5" face="Arial"><b> </b></font><font
    182. 

  182.         color="#FFFF80" size="2" face="Arial"><b><i>public</i></b></font></td>
    183. 

  183.     </tr>
    184. 

  184.     <tr>
    185. 

  185.         <td rowspan="2">&nbsp;</td>
    186. 

  186.         <td bgcolor="#FFFFCC"><font size="3" face="Arial"><b>For
    187. 

  187.         Target:</b> Use this stringlist in </font><a
    188. 

  188.         href="TDragDrop.htm#OnProcessDropped"><font size="3"
    189. 

  189.         face="Arial"><b><i>OnProcessDropped</i></b></font></a><font
    190. 

  190.         size="3" face="Arial">, if you want to get the dropped
    191. 

  191.         text.</font><p><font size="3" face="Arial"><b>For Source:</b>
    192. 

  192.         Add the text to the stringlist, which you want to drag&amp;drop,
    193. 

  193.         before calling </font><a href="#Execute"><font size="3"
    194. 

  194.         face="Arial"><b><i>Execute</i></b></font></a><font
    195. 

  195.         size="3" face="Arial">. </font></p>
    196. 

  196.         </td>
    197. 

  197.     </tr>
    198. 

  198.     <tr>
    199. 

  199.         <td bgcolor="#FFFFEF" height="50">&nbsp;</td>
    200. 

  200.     </tr>
    201. 

  201. </table>
    202. 

  202. 

  203. <table border="0" width="600">
    204. 

  204.     <tr>
    205. 

  205.         <td width="10" bgcolor="#008080" height="10">&nbsp; </td>
    206. 

  206.         <td rowspan="2" width="590"><font size="5" face="Arial">Events</font></td>
    207. 

  207.     </tr>
    208. 

  208.     <tr>
    209. 

  209.         <td>&nbsp;</td>
    210. 

  210.     </tr>
    211. 

  211. </table>
    212. 

  212. 

  213. <table border="0" cellpadding="3" cellspacing="0" width="600">
    214. 

  214.     <tr>
    215. 

  215.         <td width="10">&nbsp;</td>
    216. 

  216.         <td bgcolor="#008080"><font color="#FFFFFF" size="5"
    217. 

  217.         face="Arial"><strong>inherited events</strong></font></td>
    218. 

  218.     </tr>
    219. 

  219.     <tr>
    220. 

  220.         <td rowspan="2">&nbsp;</td>
    221. 

  221.         <td bgcolor="#FFFFCC"><a href="TDragDrop.htm#Events"><font
    222. 

  222.         face="Arial">Click here ...</font></a></td>
    223. 

  223.     </tr>
    224. 

  224.     <tr>
    225. 

  225.         <td bgcolor="#FFFFEF" height="50">&nbsp;</td>
    226. 

  226.     </tr>
    227. 

  227. </table>
    228. 

  228. 

  229. <table border="0" width="600">
    230. 

  230.     <tr>
    231. 

  231.         <td width="10" bgcolor="#008080" height="10">&nbsp;</td>
    232. 

  232.         <td rowspan="2" width="590"><font size="5" face="Arial">Methods</font></td>
    233. 

  233.     </tr>
    234. 

  234.     <tr>
    235. 

  235.         <td>&nbsp;</td>
    236. 

  236.     </tr>
    237. 

  237. </table>
    238. 

  238. 

  239. <table border="0" cellpadding="3" cellspacing="0" width="600">
    240. 

  240.     <tr>
    241. 

  241.         <td width="10">&nbsp;</td>
    242. 

  242.         <td bgcolor="#008080"><font color="#FFFFFF" size="5"
    243. 

  243.         face="Arial"><strong>inherited methods</strong></font></td>
    244. 

  244.     </tr>
    245. 

  245.     <tr>
    246. 

  246.         <td rowspan="2">&nbsp;</td>
    247. 

  247.         <td bgcolor="#FFFFCC"><a href="TDragDrop.htm#Methods"><font
    248. 

  248.         face="Arial">Click here ...</font></a></td>
    249. 

  249.     </tr>
    250. 

  250.     <tr>
    251. 

  251.         <td bgcolor="#FFFFEF">&nbsp;</td>
    252. 

  252.     </tr>
    253. 

  253.     <tr>
    254. 

  254.         <td>&nbsp;</td>
    255. 

  255.         <td bgcolor="#008080"><a name="Execute"><font
    256. 

  256.         color="#FFFFFF" size="5" face="Arial"><b>Execute</b></font></a><font
    257. 

  257.         color="#FFFFFF" size="5" face="Arial"><b> </b></font><font
    258. 

  258.         color="#FFFF80" size="2" face="Arial"><b><i>public</i></b></font></td>
    259. 

  259.     </tr>
    260. 

  260.     <tr>
    261. 

  261.         <td rowspan="2">&nbsp;</td>
    262. 

  262.         <td bgcolor="#FFFFCC"><font size="3" face="Arial">Call
    263. 

  263.         this method, if you detect that the user wants to start a
    264. 

  264.         drag&amp;drop operation (e.g. MouseDown+MouseMove). Also
    265. 

  265.         look: </font><a href="#Lines"><font size="3" face="Arial"><em><strong>Lines</strong></em></font></a><font
    266. 

  266.         size="3" face="Arial">.</font><p><font size="3"
    267. 

  267.         face="Arial">For drag detection you can also use the
    268. 

  268.         inherited property </font><a
    269. 

  269.         href="TDragDrop.htm#AutoDetectDnD"><font size="3"
    270. 

  270.         face="Arial"><em><strong>AutotDetectDnD</strong></em></font></a><font
    271. 

  271.         size="3" face="Arial"> or the method </font><a
    272. 

  272.         href="TDragDrop.htm#StartDnDDetection"><font size="3"
    273. 

  273.         face="Arial"><em><strong>StartDnDDetection</strong></em></font></a><font
    274. 

  274.         size="3" face="Arial">.</font></p>
    275. 

  275.         <p><font size="3" face="Arial">IMPORTANT: If you use the
    276. 

  276.         drag-detection, it's high recommended to check the
    277. 

  277.         section &quot;</font><a
    278. 

  278.         href="TDragDrop.htm#DragDetectionProblem"><font size="3"
    279. 

  279.         face="Arial">Problems With The Drag-Detection</font></a><font
    280. 

  280.         size="3" face="Arial">&quot;.</font></p>
    281. 

  281.         </td>
    282. 

  282.     </tr>
    283. 

  283.     <tr>
    284. 

  284.         <td bgcolor="#FFFFEF" height="50">&nbsp;</td>
    285. 

  285.     </tr>
    286. 

  286. </table>
    287. 

  287. 

  288. <table border="0" width="600">
    289. 

  289.     <tr>
    290. 

  290.         <td width="10" bgcolor="#008080" height="10">&nbsp;</td>
    291. 

  291.         <td rowspan="2" colspan="2" width="590"><font size="5"
    292. 

  292.         face="Arial">How Do I Use It As Drag&amp;Drop Source</font></td>
    293. 

  293.     </tr>
    294. 

  294.     <tr>
    295. 

  295.         <td>&nbsp;</td>
    296. 

  296.     </tr>
    297. 

  297.     <tr>
    298. 

  298.         <td>&nbsp;</td>
    299. 

  299.         <td valign="top"><font face="Arial">1.</font></td>
    300. 

  300.         <td><font face="Arial">Drop a TWinControl on the form (e.g.
    301. 

  301.         a memo).</font></td>
    302. 

  302.     </tr>
    303. 

  303.     <tr>
    304. 

  304.         <td>&nbsp;</td>
    305. 

  305.         <td valign="top"><font face="Arial">2.</font></td>
    306. 

  306.         <td><font face="Arial">Choose the TWinControl (memo) in </font><a
    307. 

  307.         href="TDragDrop.htm#DragDropControl"><font face="Arial"><em><strong>DragDropControl</strong></em></font></a><font
    308. 

  308.         face="Arial">.</font></td>
    309. 

  309.     </tr>
    310. 

  310.     <tr>
    311. 

  311.         <td>&nbsp;</td>
    312. 

  312.         <td valign="top"><font face="Arial">3. </font></td>
    313. 

  313.         <td><font face="Arial">Choose the drag&amp;drop effects
    314. 

  314.         under </font><a href="TDragDrop.htm#SourceEffects"><font
    315. 

  315.         face="Arial"><em><strong>SourceEffects</strong></em></font></a><font
    316. 

  316.         face="Arial"> which the <em><strong>DragDropControl </strong></em>(memo)
    317. 

  317.         should support. If you don't want any longer that the <em><strong>DragDropControl</strong></em>
    318. 

  318.         serve as drag&amp;drop source all items must be set to
    319. 

  319.         false.</font></td>
    320. 

  320.     </tr>
    321. 

  321.     <tr>
    322. 

  322.         <td>&nbsp;</td>
    323. 

  323.         <td valign="top"><font face="Arial">4.</font></td>
    324. 

  324.         <td><font face="Arial">Now, your <em><strong>DragDropControl</strong></em>
    325. 

  325.         (memo) must detect, if the user wants to start a drag&amp;drop
    326. 

  326.         operation. You can use the event &quot;OnMouseDown&quot;
    327. 

  327.         of your <em><strong>DragDropControl</strong></em> (memo).
    328. 

  328.         Add following to the event:</font><blockquote>
    329. 

  329.             <p><font face="Arial"><code>DragDropText1.Lines.Add(&lt;selection
    330. 

  330.             of </code></font><a
    331. 

  331.             href="TDragDrop.htm#DragDropControl"><font
    332. 

  332.             face="Arial"><code><em><strong>DragDropControl</strong></em></code></font></a><font
    333. 

  333.             face="Arial"><code> (memo)&gt;);</code></font></p>
    334. 

  334.         </blockquote>
    335. 

  335.         </td>
    336. 

  336.     </tr>
    337. 

  337.     <tr>
    338. 

  338.         <td>&nbsp;</td>
    339. 

  339.         <td valign="top"><font face="Arial">5.</font></td>
    340. 

  340.         <td valign="top"><font face="Arial">Tell Windows that
    341. 

  341.         there is a drag&amp;drop operation to handle: Just call
    342. 

  342.         the method </font><a href="TDragDrop.htm#Execute"><font
    343. 

  343.         face="Arial"><em><strong>Execute</strong></em></font></a><font
    344. 

  344.         face="Arial"> of this component. </font></td>
    345. 

  345.     </tr>
    346. 

  346.     <tr>
    347. 

  347.         <td valign="top">&nbsp;</td>
    348. 

  348.         <td valign="top"><font face="Arial">6.</font></td>
    349. 

  349.         <td valign="top"><font size="3" face="Arial">You may use
    350. 

  350.         the events </font><a href="TDragDrop.htm#OnGiveFeedback"><font
    351. 

  351.         size="3" face="Arial"><b><i>OnGiveFeedback</i></b></font></a><font
    352. 

  352.         size="3" face="Arial"> and </font><a
    353. 

  353.         href="TDragDrop.htm#OnQueryContinueDrag"><font size="3"
    354. 

  354.         face="Arial"><b><i>OnQueryContinueDrag</i></b></font></a><font
    355. 

  355.         size="3" face="Arial">, but often you need not.</font></td>
    356. 

  356.     </tr>
    357. 

  357.     <tr>
    358. 

  358.         <td valign="top">&nbsp;</td>
    359. 

  359.         <td valign="top">&nbsp;</td>
    360. 

  360.         <td valign="top">&nbsp;</td>
    361. 

  361.     </tr>
    362. 

  362.     <tr>
    363. 

  363.         <td valign="top">&nbsp;</td>
    364. 

  364.         <td valign="top" colspan="2"><font face="Arial"><strong>Hints:</strong></font></td>
    365. 

  365.     </tr>
    366. 

  366.     <tr>
    367. 

  367.         <td valign="top">&nbsp;</td>
    368. 

  368.         <td valign="top" colspan="2"><ul>
    369. 

  369.             <li><font size="3" face="Arial">Drag&amp;drop
    370. 

  370.                 operations cannot be done at design-time!</font></li>
    371. 

  371.             <li><font size="3" face="Arial">IMPORTANT: If you use
    372. 

  372.                 the drag-detection, it's high recommended to
    373. 

  373.                 check the section &quot;</font><a
    374. 

  374.                 href="TDragDrop.htm#DragDetectionProblem"><font
    375. 

  375.                 size="3" face="Arial">Problems With The Drag-Detection</font></a><font
    376. 

  376.                 size="3" face="Arial">&quot;.</font></li>
    377. 

  377.         </ul>
    378. 

  378.         </td>
    379. 

  379.     </tr>
    380. 

  380.     <tr>
    381. 

  381.         <td height="50">&nbsp;</td>
    382. 

  382.         <td colspan="2">&nbsp;</td>
    383. 

  383.     </tr>
    384. 

  384. </table>
    385. 

  385. 

  386. <table border="0" width="600">
    387. 

  387.     <tr>
    388. 

  388.         <td width="10" bgcolor="#008080" height="10">&nbsp;</td>
    389. 

  389.         <td rowspan="2" colspan="2" width="590"><font size="5"
    390. 

  390.         face="Arial">How Do I Use It As Drag&amp;Drop Target</font></td>
    391. 

  391.     </tr>
    392. 

  392.     <tr>
    393. 

  393.         <td>&nbsp;</td>
    394. 

  394.     </tr>
    395. 

  395.     <tr>
    396. 

  396.         <td>&nbsp;</td>
    397. 

  397.         <td valign="top"><font face="Arial">1.</font></td>
    398. 

  398.         <td><font face="Arial">Drop a TWinControl on the form (e.g.
    399. 

  399.         a memo).</font></td>
    400. 

  400.     </tr>
    401. 

  401.     <tr>
    402. 

  402.         <td>&nbsp;</td>
    403. 

  403.         <td valign="top"><font face="Arial">2.</font></td>
    404. 

  404.         <td><font face="Arial">Choose the TWinControl (memo) in </font><a
    405. 

  405.         href="TDragDrop.htm#DragDropControl"><font face="Arial"><em><strong>DragDropControl</strong></em></font></a><font
    406. 

  406.         face="Arial">.</font></td>
    407. 

  407.     </tr>
    408. 

  408.     <tr>
    409. 

  409.         <td>&nbsp;</td>
    410. 

  410.         <td valign="top"><font face="Arial">3. </font></td>
    411. 

  411.         <td><font face="Arial">Choose the drag&amp;drop effects
    412. 

  412.         under </font><a href="TDragDrop.htm#TargetEffects"><font
    413. 

  413.         face="Arial"><em><strong>TargetEffects</strong></em></font></a><font
    414. 

  414.         face="Arial"> which the <em><strong>DragDropControl </strong></em>(memo)
    415. 

  415.         should support. If you don't want any longer that the <em><strong>DragDropControl</strong></em>
    416. 

  416.         serve as drag&amp;drop target all items must be set to
    417. 

  417.         false.</font></td>
    418. 

  418.     </tr>
    419. 

  419.     <tr>
    420. 

  420.         <td>&nbsp;</td>
    421. 

  421.         <td valign="top"><font face="Arial">4.</font></td>
    422. 

  422.         <td><font size="3" face="Arial">Now, you have to program
    423. 

  423.         what happen, if the user drops text on your </font><a
    424. 

  424.         href="TDragDrop.htm#DragDropControl"><font size="3"
    425. 

  425.         face="Arial"><b><i>DragDropControl</i></b></font></a><font
    426. 

  426.         size="3" face="Arial"> (memo). For this, the best is to
    427. 

  427.         use the event </font><a
    428. 

  428.         href="TDragDrop.htm#OnProcessDropped"><font size="3"
    429. 

  429.         face="Arial"><b><i>OnProcessDropped</i></b></font></a><font
    430. 

  430.         size="3" face="Arial">. At first, you should check what
    431. 

  431.         drag&amp;drop effect was chosen by the user. You get the
    432. 

  432.         effect from method's parameter <b><i>dwEffect</i></b>.
    433. 

  433.         You get the bitmap from this component with following
    434. 

  434.         line:</font><blockquote>
    435. 

  435.             <p><font face="Arial"><code>...:=DragDropText1.Lines[&lt;Index&gt;];</code></font></p>
    436. 

  436.         </blockquote>
    437. 

  437.         <p><a href="#Lines"><font size="3" face="Arial"><b><i>Lines</i></b></font></a><font
    438. 

  438.         size="3" face="Arial"> is a stringlist. For more info
    439. 

  439.         check the Delphi's online-help. Now, do with the text
    440. 

  440.         what you have to do, e.g. copy, move, delete, etc.</font></p>
    441. 

  441.         </td>
    442. 

  442.     </tr>
    443. 

  443.     <tr>
    444. 

  444.         <td>&nbsp;</td>
    445. 

  445.         <td valign="top"><font face="Arial">5.</font></td>
    446. 

  446.         <td valign="top"><font size="3" face="Arial">You may use
    447. 

  447.         the events </font><a href="TDragDrop.htm#OnDragEnter"><font
    448. 

  448.         size="3" face="Arial"><b><i>OnDragEnter</i></b></font></a><font
    449. 

  449.         size="3" face="Arial">, </font><a
    450. 

  450.         href="TDragDrop.htm#OnDragOver"><font size="3"
    451. 

  451.         face="Arial"><b><i>OnDragOver</i></b></font></a><font
    452. 

  452.         size="3" face="Arial"> and </font><a
    453. 

  453.         href="TDragDrop.htm#OnDragLeave"><font size="3"
    454. 

  454.         face="Arial"><b><i>OnDragLeave</i></b></font></a><font
    455. 

  455.         size="3" face="Arial">, but often you need not.</font></td>
    456. 

  456.     </tr>
    457. 

  457.     <tr>
    458. 

  458.         <td valign="top">&nbsp;</td>
    459. 

  459.         <td valign="top">&nbsp;</td>
    460. 

  460.         <td valign="top">&nbsp;</td>
    461. 

  461.     </tr>
    462. 

  462.     <tr>
    463. 

  463.         <td valign="top">&nbsp;</td>
    464. 

  464.         <td valign="top" colspan="2"><font face="Arial"><strong>Hints:</strong></font></td>
    465. 

  465.     </tr>
    466. 

  466.     <tr>
    467. 

  467.         <td valign="top">&nbsp;</td>
    468. 

  468.         <td valign="top" colspan="2"><ul>
    469. 

  469.             <li><font size="3" face="Arial">Drag&amp;drop
    470. 

  470.                 operations cannot be done at design-time!</font></li>
    471. 

  471.         </ul>
    472. 

  472.         </td>
    473. 

  473.     </tr>
    474. 

  474.     <tr>
    475. 

  475.         <td height="50">&nbsp;</td>
    476. 

  476.         <td colspan="2">&nbsp;</td>
    477. 

  477.     </tr>
    478. 

  478. </table>
    479. 

  479. 

  480. <table border="0" width="600">
    481. 

  481.     <tr>
    482. 

  482.         <td width="10" bgcolor="#008080" height="10">&nbsp; </td>
    483. 

  483.         <td rowspan="2" width="590"><font size="5" face="Arial">Known
    484. 

  484.         Bugs</font></td>
    485. 

  485.     </tr>
    486. 

  486.     <tr>
    487. 

  487.         <td>&nbsp;</td>
    488. 

  488.     </tr>
    489. 

  489.     <tr>
    490. 

  490.         <td>&nbsp;</td>
    491. 

  491.         <td><ul>
    492. 

  492.             <li><font face="Arial">I hope, you never find one</font></li>
    493. 

  493.         </ul>
    494. 

  494.         </td>
    495. 

  495.     </tr>
    496. 

  496.     <tr>
    497. 

  497.         <td height="50">&nbsp;</td>
    498. 

  498.         <td>&nbsp;</td>
    499. 

  499.     </tr>
    500. 

  500. </table>
    501. 

  501. 

  502. <hr>
    503. 

  503. 

  504. <p><font size="3" face="Arial"><i>© 1998,99 by </i></font><a
    505. 

  505. href="mailto:[email protected]"><font size="3" face="Arial"><i>Dieter
    506. 

  506. Steinwedel</i></font></a><font size="3" face="Arial"> </font></p>
    507. 

  507. 

  508. <p><a href="Index.htm"><font face="Arial">Back</font></a><font
    509. 

  509. face="Arial"> to index</font></p>
    510. 

  510. </body>
    511. 

  511. </html>
    512.