{"id":335,"date":"2021-11-30T12:47:29","date_gmt":"2021-11-30T04:47:29","guid":{"rendered":"https:\/\/www.cuishaofeng.com\/?p=335"},"modified":"2024-10-22T14:44:12","modified_gmt":"2024-10-22T06:44:12","slug":"delphi-treeview-%e7%94%a8%e6%b3%95%ef%bc%88%e6%8f%8f%e8%bf%b0%e3%80%81%e5%b1%9e%e6%80%a7%e3%80%81%e6%b7%bb%e5%8a%a0%e7%bc%96%e8%be%91%e6%8f%92%e5%85%a5%e8%8a%82%e7%82%b9%e3%80%81%e5%ae%9a%e4%bd%8d","status":"publish","type":"post","link":"https:\/\/www.cuishaofeng.com\/?p=335","title":{"rendered":"Delphi Treeview \u7528\u6cd5\uff08\u63cf\u8ff0\u3001\u5c5e\u6027\u3001\u6dfb\u52a0\u7f16\u8f91\u63d2\u5165\u8282\u70b9\u3001\u5b9a\u4f4d\u8282\u70b9\u3001\u62d6\u62fd\u7b49\uff09"},"content":{"rendered":"<div id=\"core-ai-summary-tool\"><\/div>\n<p>Treeview\u7684\u7528\u6cd5\uff0c\u7f51\u4e0a\u867d\u7136\u603b\u7ed3\u4e86\u5f88\u591a\uff0c\u4f46\u662f\u8fd8\u662f\u6709\u5f88\u591a\u8282\u70b9\u6ca1\u6709\u8bb2\u5230\u4e86\uff0c\u4e5f\u7ed9\u4f7f\u7528\u4e2d\u9047\u5230\u5f88\u591a\u95ee\u9898\u3002\u7279\u5730\u603b\u7ed3\u4e00\u4e0b\uff1a<\/p>\n\n\n\n<p><strong>1\u3001\u6982\u5ff5<\/strong>Treeview\u7528\u4e8e\u663e\u793a\u6309\u7167\u6811\u5f62\u7ed3\u6784\u8fdb\u884c\u7ec4\u7ec7\u7684\u6570\u636e\u3002Treeview\u63a7\u4ef6\u4e2d\u4e00\u4e2a\u6811\u5f62\u56fe\u7531\u8282\u70b9(TreeNode)\u548c\u8fde\u63a5\u7ebf\u7ec4\u6210\u3002TtreeNode\u662fTTreeview\u7684\u57fa\u672c\u7ec4\u6210\u5355\u5143\u3002\u00a0\u4e00\u4e2a\u6811\u7684\u8282\u70b9\u53c8\u5305\u542b\u6587\u672c(Text)\u548c\u6570\u636e(Data)\u3002Text\u4e3aString\u7c7b\uff0cData\u5219\u4e3a\u65e0\u5b9a\u5f62\u6307\u9488(Untyped\u00a0 \u00a0Pointer)\uff0c\u53ef\u4ee5\u6307\u5411\u4e00\u4e2a\u4e0e\u8282\u70b9\u76f8\u8054\u7cfb\u7684\u6570\u636e\u7ed3\u6784\u3002\u6bcf\u4e00\u4e2a\u8282\u70b9\u4e0b\u5b50\u8282\u70b9\u5f62\u6210\u8fd9\u4e00\u8282\u70b9\u7684Items\u5c5e\u6027\uff0c\u5f53\u524d\u8282\u70b9\u6709\u4e00\u4e2a\u552f\u4e00\u7684Index(TreeNode\u7684Index\u5c5e\u6027)\uff0c\u7528\u4e8e\u8bf4\u660e\u5b50\u8282\u70b9\u5728Items\u4e2d\u7684\u4f4d\u7f6e\uff0c\u6bcf\u4e00\u4e2a\u8282\u70b9\u4e0b\u7684\u5b50\u8282\u70b9\u662f\u987a\u5e8f\u7f16\u53f7\u7684\uff0c\u7b2c\u4e00\u4e2a\u662f0\uff0c\u7b2c\u4e8c\u4e2a\u662f1\uff0c\u4f9d\u6b21\u7c7b\u63a8\u3002\u7528IndexOf\u65b9\u6cd5\u83b7\u5f97\u5b50\u8282\u70b9\u7684\u987a\u5e8f\uff0c\u7edd\u5bf9\u987a\u5e8f(AbsoluteIndex)\u5219\u662f\u6307\u4eceTreeview\u7b2c\u4e00\u4e2a\u9879\u5f00\u59cb\u7684\u987a\u5e8f\u503c\uff0c\u7b2c\u4e00\u4e2a\u662f0\uff0c\u5982\u6b64\u63a8\u4e0b\u53bb\u3002Item\u5c5e\u6027\u5219\u6839\u636eIndex\u7684\u503c\u8fd4\u56de\u5f53\u524d\u8282\u70b9\u7684\u7b2cIndex\u4e2a\u5b50\u8282\u70b9\u3002Count\u5219\u8868\u660e\u5c5e\u4e8e\u6b64\u9879\u7684\u6240\u6709\u5b50\u8282\u70b9\u7684\u6570\u91cf\u3002\u7528MoveTo\u65b9\u6cd5\u5c06Item\u7531\u4e00\u4e2a\u4f4d\u7f6e\u79fb\u5230\u53e6\u4e00\u4e2a\u4f4d\u7f6e\u3002\u00a0 \u00a0<\/p>\n\n\n\n<p>\u00a0<strong>2\u3001\u5c5e\u6027\u00a0<\/strong><\/p>\n\n\n\n<ul><li>&nbsp;Expanded&nbsp; \/\/\u8868\u660e\u662f\u5426\u6240\u6709\u7684\u5b50\u9879\u90fd\u5168\u90e8\u5c55\u5f00(\u5305\u62ec\u5b50\u9879\u7684\u5b50\u9879)\uff0c\u4e3aTrue\u8868\u793a\u5168\u90e8\u5c55\u5f00\u3002&nbsp; &nbsp;<\/li><li>&nbsp;IsVisible \/\/\u8868\u660e\u4e00\u4e2a\u9879\u662f\u5426\u5728\u6811\u4e2d\u80fd\u88ab\u770b\u5230\uff0c\u5982\u679c\u6811\u5168\u90e8\u5c55\u5f00\u90a3\u4e48\u8fd9\u4e2aItem\u662f\u80af\u5b9a\u53ef\u4ee5&nbsp; &nbsp;\u88ab\u770b\u5230\u3002&nbsp; &nbsp;&nbsp;<\/li><li>&nbsp;HasChildren \/\/\u8868\u660e\u4e00\u4e2a\u9879\u662f\u5426\u6709\u5b50\u9879\u3002GetFirstChild, GetLastChild, GetPrevChild,&nbsp;GetNextChild\u5206\u522b\u8fd4\u56de\u5f53\u524d\u9879\u5b50\u9879\u7684\u7b2c\u4e00\u4e2a\u3001\u6700\u540e\u4e00\u4e2a\u548c\u524d\u4e00\u4e2a\u3001\u540e\u4e00\u4e2a\u9879\u3002&nbsp; &nbsp;<\/li><li>&nbsp;GetNextSibling&nbsp; &nbsp;and&nbsp; &nbsp;GetPrevSibling&nbsp; \/\/\u8fd4\u56de\u5728\u540c\u4e00Level\u4e0b\u7684\u4e0b\u4e00\u4e2a\u548c\u4e0a\u4e00\u4e2a\u9879\u3002&nbsp; &nbsp;<\/li><li>&nbsp;GetNextVisible&nbsp; &nbsp;and&nbsp; &nbsp;GetPrevVisible&nbsp; \/\/\u8fd4\u56de\u80fd\u770b\u5f97\u5230\u7684\u4e0b\u4e00\u4e2a\u548c\u4e0a\u4e00\u4e2a\u9879\u3002\u5982\u679c\u4e00\u4e2a\u8282\u70b9&nbsp; &nbsp;\u6709Parent\uff0c\u5219HasAsParent\u65b9\u6cd5\u8fd4\u56deTrue.&nbsp; &nbsp;Parent\u4e3a\u5f53\u524d\u9879\u7684\u7236\u9879\u3002Focused\u5c5e\u6027\u786e\u5b9a\u7126\u70b9\u662f\u5426\u843d\u5728\u6b64\u8282\u70b9\u4e0a\uff0c\u88abFocus\u65f6\u4f1a\u4e00\u4e2a\u6807\u51c6\u7684\u65b9\u6846\u56f4\u4f4f\u3002\u5f88\u663e\u7136\uff0c\u53ea\u6709\u4e00\u4e2a\u8282\u70b9\u4f1a\u88ab\u805a\u7126\u3002&nbsp; &nbsp; &nbsp;<\/li><li>&nbsp;Selected \/\/\u8868\u660e\u4e00\u4e2a\u8282\u70b9\u662f\u5426\u88ab\u9009\u4e2d\uff0c\u540c\u6837\u53ea\u6709\u4e00\u4e2a\u8282\u70b9\u4f1a\u88ab\u9009\u4e2d\u3002&nbsp; &nbsp;&nbsp;<\/li><li>&nbsp;DropTarget \/\/\u8868\u660e\u8282\u70b9\u5728\u62d6\u52a8\u64cd\u4f5c\u4e2d\u662f\u6e90\u8fd8\u662f\u76ee\u6807\u3002&nbsp; &nbsp;<\/li><\/ul>\n\n\n\n<p><strong>3\u3001\u6dfb\u52a0\u3001\u5220\u9664\u3001\u4fee\u6539\u8282\u70b9\uff1a&nbsp;<\/strong>&nbsp;&nbsp;\u9759\u6001\u7684\u65b9\u6cd5\u53ef\u4ee5\u5728\u8bbe\u8ba1\u65f6\u901a\u8fc7Items\u7684\u7f16\u8f91\u5668\u8bbe\u7f6e\u5404\u8282\u70b9\u7684\u5185\u5bb9\u3002\u5728\u6dfb\u52a0\u548c\u5220\u9664\u524d\u5fc5\u987b\u4fdd\u8bc1\u6709\u8282\u70b9\u88ab\u9009\u4e2d(Treeview.Selected&nbsp; &nbsp;=&nbsp; &nbsp;nil)&nbsp; \u7528AddFirst,&nbsp; &nbsp;AddChild\u7b49\u5148\u6dfb\u52a0\u6839\u8282\u70b9\uff0c\u7136\u540e\u4ee5\u6b64\u4e3a\u57fa\u7840\uff0c\u6dfb\u52a0\u6b64\u9879\u7684\u5b50\u8282\u70b9\u3002&nbsp; &nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><\/td><td><code>Treeview1.Items.AddFirst (nil,\u00a0'Root')\uff1b\/\/\u6dfb\u52a0\u7b2c\u4e00\u4e2a\u8282\u70b9\u00a0\u6ce8\u610f \u6839\u8282\u70b9\u6ca1\u6709\u7236\u8282\u70b9(TTreeNode.Parent=nil)\u00a0\u00a0<\/code><br><code>Treeview1.Items.AddChild (\u00a0nil,\u00a0\u00a0'qt')\uff1b\/\/\u6dfb\u52a0\u7b2c\u5b50\u8282\u70b9<\/code><br><code>Treeview1.Selected.Delete {\u5220\u9664\u8282\u70b9}<\/code><br><code>Treeview1.Selected.EditText\u00a0{\u7f16\u8f91\u8282\u70b9\u5185\u5bb9 }<\/code>\u00a0<br><code>\/\/\u5728\u5927\u6279\u91cf\u6dfb\u52a0\u6570\u636e\u5230Treeview\u4e2d\u65f6\u53ef\u4ee5\u4f7f\u7528 BeginUpdate\u3001EndUpdate\u00a0\u00a0<\/code><br><code>TreeView.Items.BeginUpdate;\u00a0\u00a0TreeView.Items.EndUpdate\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>&nbsp;4\u3001\u8282\u70b9\u4e0a\u663e\u793a\u56fe\u8c61&nbsp;<\/strong>&nbsp;&nbsp;Treeview\u4e2d\u51e0\u4e2a\u4e0e\u56fe\u8c61\u76f8\u5173\u7684\u5c5e\u6027\uff1a&nbsp; &nbsp;<\/p>\n\n\n\n<ul><li>SelectedIndex \/\/\u5f53\u8282\u70b9\u88ab\u9009\u4e2d\u65f6\u5728TimageList&nbsp; &nbsp;\u4e2d\u9009\u4ec0\u4e48\u6837\u7684\u56fe\u8c61&nbsp; &nbsp;<\/li><li>OverlayIndex&nbsp; \/\/\u9009\u90a3\u526f\u56fe\u8c61\u4f5c\u4e3a\u63a9\u56fe\uff08\u4e00\u5e45\u56fe\u8c61\u900f\u660e\u5730\u663e\u793a\u5728\u53e6\u4e00\u5e45\u56fe\u8c61\u7684\u524d\u9762\uff09\uff0c&nbsp; &nbsp;\u6bd4\u5982\u4e00\u4e2a\u8282\u70b9\u4e0d\u53ef\u7528\u65f6\u52a0\u4e00\u526fX\u56fe\u8c61\u5728\u5176\u524d\u9762\u3002&nbsp; &nbsp;<\/li><li>ImageIndex&nbsp; \/\/\u5728\u5e38\u6001\u65f6\u9009\u7528\u7684\u56fe\u7684\u5e8f\u53f7&nbsp; &nbsp;<\/li><li>StateIndex&nbsp; \/\/\u5728StateImages\u8fd9\u4e2aImageList\u4e2d\u5bf9\u5e94\u7684\u5e8f\u53f7\uff0c-1\u65f6\u4e0d\u663e\u793a\u56fe\u8c61 \uff0c\u6bd4\u8f83\u5178\u578b\u7684\uff0c\u50cf\u5728\u6587\u4ef6\u7ba1\u7406\u5668\u4e2d\u7684\u6240\u663e\u793a\u7684\u4e00\u6837\uff0cTreeview\u63a7\u4ef6\u5728\u8282\u70b9\u4e4b\u524d\u4e5f\u53ef\u4ee5&nbsp; &nbsp;\u663e\u793a\u56fe\u8c61\u3002\u5728Form\u4e2d\u653e\u7f6e\u4e00ImageList\u63a7\u4ef6\uff0c\u52a0\u5165\u51e0\u4e2a\u56fe\u7247\uff0c\u5206\u522b\u88abIndex\u4e3a0,1,\u2026&nbsp; &nbsp;\u5728Treeview\u7684Image\u5c5e\u6027\u9879\u586b\u5165\u4f60\u6240\u52a0\u5165\u7684ImageList\u7684\u63a7\u4ef6\u540d\u79f0\u3002<\/li><li>TreeNode\u7684ImageIndex&nbsp; &nbsp;\/\/\u8868\u793a\u8282\u70b9\u672a\u88ab\u9009\u4e2d\u65f6(Selected=nil)\u7684\u56fe\u7247\u5e8f\u53f7\uff0cSelectedIndex\u8868\u793a\u8282\u70b9\u88ab\u9009\u4e2d\u65f6\u56fe\u7247\u5e8f\u53f7\u3002<\/li><\/ul>\n\n\n\n<p>\u4f8b\u5982\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><\/td><td><code>TreeView1.Items[0].ImageIndex :=\u00a01;\u00a0\u00a0\/\/\u9ed8\u8ba4\u9009\u7528\u7684\u56fe\uff08\u5e8f\u53f7\uff09<\/code><br><code>TreeView1.Items[0].SelectedIndex :=\u00a02;\u00a0\u00a0\/\/\u9009\u4e2d\u65f6\uff0c\u663e\u793a\u7684\u56fe(\u5e8f\u53f7)<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>3\u3001TreeView\u7684Level&nbsp; &nbsp;<\/strong>&nbsp; \u5373\u6811\u7ed3\u6784\u7684\u5c42\u7ea7&nbsp; \u4f8b\u5982\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>1<\/td><td><code>TreeView1<\/code><code>.<\/code><code>Selected<\/code><code>.<\/code><code>Level=<\/code><code>0<\/code><code>;&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code>\/\/\u7b2c\u4e00\u5c42<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>4\u3001\u5c55\u5f00\u4e0e\u5408\u5e76&nbsp;&nbsp;[\u539f\u521b]<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><\/td><td><code>TreeView1.FullExpand;\u00a0 \u3000\u3000\u00a0{\u5168\u90e8\u5c55\u5f00}<\/code><br><code>TreeView1.FullCollapse; \u3000\u3000\u00a0{\u5168\u90e8\u5408\u5e76}<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>5\u3001\u5b9a\u4f4d\u8282\u70b9&nbsp;&nbsp;[\u539f\u521b]<\/strong>&nbsp;\u7f51\u4e0a\u8bb2\u4e86\u4e00\u4e2a\u5f88\u957f\u7684\u4ee3\u7801\u5b9a\u4f4d\u6570\u636e\uff0c\u5176\u5b9e\u5b9a\u4f4d\u5c31\u5f88\u7b80\u5355\u4ee3\u7801\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><\/td><td><code>var\u00a0\u00a0<\/code><br>   <code>Node:TTreeNode;\u00a0\u00a0<\/code><br>   <code>i:Integer;\u00a0\u00a0<\/code><br>   <code>ENode:string;<\/code><br><code>begin\u00a0\u00a0<\/code><br>    <code>ENode:=Trim(Edit1.Text);\u00a0\u00a0<\/code><br>    <code>for<\/code>\u00a0<code>i:=0<\/code>\u00a0<code>to<\/code>\u00a0<code>TreeView1.Items.Count-1<\/code>\u00a0<code>do<\/code>\u00a0<code>begin\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><br>        <code>if<\/code>\u00a0<code>TreeView1.Items.Item[i].Text=ENode\u00a0then<\/code>\u00a0<code>begin\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><br>            <code>Node:=TreeView1.Items.Item[i];\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><br>            <code>TreeView1.Select(Node);\u00a0\u00a0\u00a0\u00a0\/\/\u9009\u4e2d\u7126\u70b9\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><br><code>\u00a0      Exit;\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><br>       <code>end;\u00a0\u00a0<\/code><br><code>end;<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>6\u3001\u5b9e\u73b0\u62d6\u62fd&nbsp;&nbsp;[\u539f\u521b]<\/strong><\/p>\n\n\n\n<p>\u5b9e\u73b0\u62d6\u62fd\u7684\u4ee3\u7801\u4e5f\u5f88\u7b80\u5355\uff0c\u800c\u4e0d\u662f\u5f88\u957f\uff0c\u6700\u7b80\u5355\u5c31\u8fd9\u4e24\u53e5\uff1a<\/p>\n\n\n\n<p>\u3000\u30001\uff09\u5f00\u542f\u65f6\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>1<\/td><td><code>TreeView1<\/code><code>.<\/code><code>DragMode:=dmAutomatic;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code>\/\/\u5f00\u542f\u62d6\u62fd\u6a21\u5f0f\uff1admAutomatic\u81ea\u52a8&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; dmManual \u624b\u52a8<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u3000\u30002\uff09\u5728TreeView1DragDrop\u5904\u4e8b\u4ef6\uff1a&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>1<\/td><td><code>TreeView1<\/code><code>.<\/code><code>Selected<\/code><code>.<\/code><code>MoveTo(TreeView1<\/code><code>.<\/code><code>DropTarget,naAddChild);<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u5373\u53ef\u8f7b\u677e\u5b9e\u73b0\u62d6\u62fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Treeview\u7684\u7528\u6cd5\uff0c\u7f51\u4e0a\u867d\u7136\u603b\u7ed3\u4e86\u5f88\u591a\uff0c\u4f46\u662f\u8fd8\u662f\u6709\u5f88\u591a\u8282\u70b9\u6ca1\u6709\u8bb2\u5230\u4e86\uff0c\u4e5f\u7ed9\u4f7f\u7528\u4e2d\u9047\u5230\u5f88\u591a\u95ee\u9898\u3002\u7279\u5730\u603b\u7ed3\u4e00\u4e0b\uff1a 1\u3001\u6982\u5ff5Treeview\u7528\u4e8e\u663e\u793a\u6309\u7167\u6811\u5f62\u7ed3\u6784\u8fdb\u884c\u7ec4\u7ec7\u7684\u6570\u636e\u3002Treeview\u63a7\u4ef6\u4e2d\u4e00\u4e2a\u6811\u5f62\u56fe\u7531\u8282\u70b9(TreeNode)\u548c\u8fde\u63a5\u7ebf&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[91],"topic":[],"_links":{"self":[{"href":"https:\/\/www.cuishaofeng.com\/index.php?rest_route=\/wp\/v2\/posts\/335"}],"collection":[{"href":"https:\/\/www.cuishaofeng.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cuishaofeng.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cuishaofeng.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cuishaofeng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=335"}],"version-history":[{"count":3,"href":"https:\/\/www.cuishaofeng.com\/index.php?rest_route=\/wp\/v2\/posts\/335\/revisions"}],"predecessor-version":[{"id":339,"href":"https:\/\/www.cuishaofeng.com\/index.php?rest_route=\/wp\/v2\/posts\/335\/revisions\/339"}],"wp:attachment":[{"href":"https:\/\/www.cuishaofeng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cuishaofeng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=335"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cuishaofeng.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=335"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.cuishaofeng.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftopic&post=335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}