{"id":208112,"date":"2025-07-08T17:49:37","date_gmt":"2025-07-08T09:49:37","guid":{"rendered":"https:\/\/server.hk\/cnblog\/208112\/"},"modified":"2025-07-08T17:49:37","modified_gmt":"2025-07-08T09:49:37","slug":"golang-%e4%b8%8e-qt-%e5%9c%a8-paintevent-%e4%b8%ad%e7%bb%98%e7%94%bb%e6%97%b6%e5%87%ba%e7%8e%b0%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208112\/","title":{"rendered":"Golang \u4e0e Qt \u5728 PaintEvent \u4e2d\u7ed8\u753b\u65f6\u51fa\u73b0\u95ee\u9898"},"content":{"rendered":"<p><b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>Golang \u4e0e Qt \u5728 PaintEvent \u4e2d\u7ed8\u753b\u65f6\u51fa\u73b0\u95ee\u9898<\/span><\/p>\n<p><span>\u6765\u6e90\uff1astackoverflow<\/span><br \/>\n<span>2024-04-29 08:57:36<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u6765\u5230\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60Golang\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300aGolang \u4e0e Qt \u5728 PaintEvent \u4e2d\u7ed8\u753b\u65f6\u51fa\u73b0\u95ee\u9898\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n<p> \u95ee\u9898\u5185\u5bb9<br \/>\n <\/p>\n<p>\u6211\u5728\u8fd9\u91cc\u4f7f\u7528\u8fd9\u4e2a golang qt \u7ed1\u5b9a\u6765\u521b\u5efa\u4e00\u4e2a\u7b80\u5355\u7684\u4ee3\u7801\u7f16\u8f91\u5668\u3002\u6211\u5c06 <code>paintevent<\/code> \u56de\u8c03\u5904\u7406\u7a0b\u5e8f\u8fde\u63a5\u5230\u5b9e\u9645\u7684\u7f16\u8f91\u5668\uff0c\u6211\u6b63\u5728\u5c1d\u8bd5\u5728\u5176\u4e2d\u8fdb\u884c\u7ed8\u753b\u3002\u6b63\u5982\u6211\u5728\u5404\u79cd\u8bba\u575b\u4e2d\u53d1\u73b0\u7684\u90a3\u6837\uff0c\u8fd9\u662f\u5e94\u8be5\u5b8c\u6210\u7ed8\u753b\u7684\u552f\u4e00\u70b9\u3002 \u4f46\u662f\uff0c\u5f53\u8c03\u7528 <code>painter := gui.newqpainter2(ce.editor)<\/code> \u65f6\uff0c\u6211\u6536\u5230\u4e00\u4e9b\u8b66\u544a\u8f93\u51fa<\/p>\n<pre>qwidget::paintengine: should no longer be called\nqpainter::begin: paint device returned engine == 0, type: 1<\/pre>\n<p>\u5f53\u8c03\u7528 <code>setpen<\/code> \u51fd\u6570\u65f6\uff0c\u6211\u6536\u5230\u6d88\u606f<\/p>\n<p>qpainter::setpen\uff1a\u753b\u5bb6\u672a\u6fc0\u6d3b<\/p>\n<p>\u8fd9\u662f\u8be5\u95ee\u9898\u7684\u4e00\u4e2a\u5de5\u4f5c\u793a\u4f8b<\/p>\n<pre>package main\n\n\nimport (\n    \"os\"\n\n    \"github.com\/therecipe\/qt\/widgets\"\n    \"github.com\/therecipe\/qt\/gui\"\n    \"github.com\/therecipe\/qt\/core\"\n)\n\ntype CodeEditor struct {\n    editor *widgets.QPlainTextEdit\n}\n\nfunc NewCodeEditor(parent *widgets.QWidget) *CodeEditor {\n    codeEditor := &amp;CodeEditor{editor: widgets.NewQPlainTextEdit(parent)}\n    codeEditor.setupSignals()\n    return codeEditor\n}\n\nfunc (ce *CodeEditor) setupSignals() {\n    ce.editor.ConnectPaintEvent(ce.paintEvent)\n}\n\nfunc (ce *CodeEditor) paintEvent(event *gui.QPaintEvent) {\n    painter := gui.NewQPainter2(ce.editor)\n    color := gui.NewQColor6(\"red\")\n    painter.SetPen2(color)\n    painter.DestroyQPainter()\n}\n\nfunc main() {\n    core.QCoreApplication_SetAttribute(core.Qt__AA_ShareOpenGLContexts, true)\n    widgets.NewQApplication(len(os.Args), os.Args)\n\n    mainWindow := widgets.NewQMainWindow(nil, 0)\n    codeEditor := NewCodeEditor(nil)\n\n    mainWindow.SetCentralWidget(codeEditor.editor)\n    mainWindow.ShowMaximized()\n\n    widgets.QApplication_Exec()\n}<\/pre>\n<p> <\/p>\n<h2>\u89e3\u51b3\u65b9\u6848<\/h2>\n<p> <\/p>\n<p>\u60a8\u5c1a\u672a\u6fc0\u6d3b QPainter \u5b9e\u4f8b\u3002 \u68c0\u67e5<\/p>\n<p>\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8eGolang\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u524d\u4f4d\u7f6e\uff1a &gt; &gt; &#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-208112","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208112","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=208112"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208112\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208112"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208112"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}