{"id":4158,"date":"2022-01-24T14:34:22","date_gmt":"2022-01-24T14:34:22","guid":{"rendered":"http:\/\/truelogic.org\/wordpress\/?p=4158"},"modified":"2022-01-24T14:34:23","modified_gmt":"2022-01-24T14:34:23","slug":"wxwidgets-11a-drawing-lines","status":"publish","type":"post","link":"https:\/\/truelogic.org\/wordpress\/2022\/01\/24\/wxwidgets-11a-drawing-lines\/","title":{"rendered":"wxWidgets – 11a.Drawing Lines"},"content":{"rendered":"\n

OVERVIEW<\/strong><\/p>\n\n\n\n

We use the DrawLine()<\/em> method to draw straight lines on the screen. All GDI methods work by overriding the wxEVT_PAINT<\/em> method. The DrawLine<\/em> method takes in the starting x.y coordinates and ending x,y coordinates. <\/p>\n\n\n\n

SAMPLE CODE<\/strong><\/p>\n\n\n\n

line.h<\/pre>\n\n\n
\n#include <wx\/wxprec.h>\n#ifndef WX_PRECOMP\n\t#include <wx\/wx.h>\n#endif\n\nclass Line: public wxFrame {\n\tpublic:\n\t\tLine(const wxString &title);\n\t\tvoid onPaint(wxPaintEvent &event);\n\n};\n\n\n<\/pre><\/div>\n\n\n
line.cpp<\/pre>\n\n\n
\n#include "line.h"\n\nLine::Line(const wxString &title):\n\twxFrame(NULL, -1, title, wxDefaultPosition, wxSize(500,300)) {\n\n\tBind(wxEVT_PAINT, &Line::onPaint, this);\n}\n\nvoid Line::onPaint(wxPaintEvent &event) {\n\twxPaintDC dc(this);\n\tint x1=5, x2=270,y1=80,y2=0;\n\tfor(int i =10; i <= 500; i+=20) {\n\n\t\ty2= y1+i;\n\t\tdc.DrawLine(x1, y1, x2, y2);\n\t}\n\n\n}\n\n<\/pre><\/div>\n\n\n
main.h<\/pre>\n\n\n
\n#include <wx\/wxprec.h>\n#ifndef WX_PRECOMP\n\t#include <wx\/wx.h>\n#endif\n\nclass Main: public wxApp {\n\n\tpublic:\n\t\tvirtual bool OnInit();\n};\n\n<\/pre><\/div>\n\n\n
main.cpp<\/pre>\n\n\n
\n#include "main.h"\n#include "line.h"\n\nIMPLEMENT_APP(Main)\n\nbool Main::OnInit() {\n\tLine *app = new Line(wxT("Lines"));\n\tapp->Show(true);\n\n}\n\n<\/pre><\/div>\n\n\n
The output is shown below<\/p>\n\n\n\n
\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"
OVERVIEW We use the DrawLine() method to draw straight lines on the screen. All GDI methods work by overriding the wxEVT_PAINT method. The DrawLine method […]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":3595,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[302,365],"tags":[],"class_list":["post-4158","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cc","category-wxwidgets"],"_links":{"self":[{"href":"https:\/\/truelogic.org\/wordpress\/wp-json\/wp\/v2\/posts\/4158","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/truelogic.org\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/truelogic.org\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/truelogic.org\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/truelogic.org\/wordpress\/wp-json\/wp\/v2\/comments?post=4158"}],"version-history":[{"count":4,"href":"https:\/\/truelogic.org\/wordpress\/wp-json\/wp\/v2\/posts\/4158\/revisions"}],"predecessor-version":[{"id":4163,"href":"https:\/\/truelogic.org\/wordpress\/wp-json\/wp\/v2\/posts\/4158\/revisions\/4163"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/truelogic.org\/wordpress\/wp-json\/wp\/v2\/media\/3595"}],"wp:attachment":[{"href":"https:\/\/truelogic.org\/wordpress\/wp-json\/wp\/v2\/media?parent=4158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/truelogic.org\/wordpress\/wp-json\/wp\/v2\/categories?post=4158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/truelogic.org\/wordpress\/wp-json\/wp\/v2\/tags?post=4158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}