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annotate libgui/graphics/GLCanvas.cc @ 20478:efe22f9b53a3 stable

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qt toolkit: set keyboard focus in canvas (Bug #44832) * libgui/graphics/GLCanvas.cc (GLCanvas::GLCanvas): call setFocus
author John Donoghue
date Mon, 22 Jun 2015 12:06:53 -0400
parents 5c2564643de4
children
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1 /*
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2
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3 Copyright (C) 2011-2015 Michael Goffioul
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #ifdef HAVE_CONFIG_H
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28 #include <config.h>
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29 #endif
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30
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31 #include "gl-render.h"
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32 #include "graphics.h"
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33
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34 #include "GLCanvas.h"
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35 #include "gl-select.h"
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36
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37 namespace QtHandles
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38 {
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39
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40 GLCanvas::GLCanvas (QWidget* xparent, const graphics_handle& gh)
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41 #if defined (Q_OS_WIN32)
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42 : QGLWidget (QGLFormat (QGL::SampleBuffers | QGL::IndirectRendering),
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43 xparent), Canvas (gh)
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44 #else
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45 : QGLWidget (QGLFormat (QGL::SampleBuffers), xparent), Canvas (gh)
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46 #endif
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47 {
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48 setFocusPolicy (Qt::ClickFocus);
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49 setFocus();
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50 }
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51
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52 GLCanvas::~GLCanvas (void)
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53 {
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54 }
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55
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56 void
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57 GLCanvas::draw (const graphics_handle& gh)
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58 {
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59 gh_manager::auto_lock lock;
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60 graphics_object go = gh_manager::get_object (gh);
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61
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62 if (go)
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63 {
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64 opengl_renderer r;
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65
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66 r.set_viewport (width (), height ());
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67 r.draw(go);
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68 }
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69 }
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70
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71 void
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72 GLCanvas::toggleAxes (const graphics_handle& gh)
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73 {
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74 canvasToggleAxes (gh);
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75 }
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76
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77 void
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78 GLCanvas::toggleGrid (const graphics_handle& gh)
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79 {
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80 canvasToggleGrid (gh);
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81 }
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82
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83 void
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84 GLCanvas::autoAxes (const graphics_handle& gh)
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85 {
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86 canvasAutoAxes (gh);
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87 }
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88
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89 graphics_object
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90 GLCanvas::selectFromAxes (const graphics_object& ax, const QPoint& pt)
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91 {
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92 makeCurrent ();
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93
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94 if (ax)
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95 {
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96 opengl_selector s;
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97
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98 s.set_viewport (width (), height ());
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99 return s.select (ax, pt.x (), height () - pt.y ());
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100 }
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101
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102 return graphics_object ();
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103 }
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104
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105 inline void
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106 glDrawZoomBox (const QPoint& p1, const QPoint& p2)
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107 {
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108 glVertex2d (p1.x (), p1.y ());
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109 glVertex2d (p2.x (), p1.y ());
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110 glVertex2d (p2.x (), p2.y ());
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111 glVertex2d (p1.x (), p2.y ());
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112 glVertex2d (p1.x (), p1.y ());
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113 }
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114
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115 void
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116 GLCanvas::drawZoomBox (const QPoint& p1, const QPoint& p2)
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117 {
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118 glPushMatrix ();
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119
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120 glMatrixMode (GL_MODELVIEW);
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121 glLoadIdentity ();
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122
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123 glMatrixMode (GL_PROJECTION);
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124 glLoadIdentity ();
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125 glOrtho (0, width (), height (), 0, 1, -1);
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126
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127 glPushAttrib (GL_DEPTH_BUFFER_BIT | GL_CURRENT_BIT);
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128 glDisable (GL_DEPTH_TEST);
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129
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130 glBegin (GL_POLYGON);
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131 glColor4f (0.45, 0.62, 0.81, 0.1);
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132 glDrawZoomBox (p1, p2);
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133 glEnd ();
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134
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135 glBegin (GL_LINE_STRIP);
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136 glLineWidth (1.5);
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137 glColor4f (0.45, 0.62, 0.81, 0.9);
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138 glDrawZoomBox (p1, p2);
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139 glEnd ();
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140
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141 glPopAttrib ();
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142 glPopMatrix ();
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143 }
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144
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145 void
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146 GLCanvas::paintGL (void)
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147 {
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148 canvasPaintEvent ();
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149 }
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150
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151 void
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152 GLCanvas::mouseDoubleClickEvent (QMouseEvent* xevent)
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153 {
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154 canvasMouseDoubleClickEvent (xevent);
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155 }
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156
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157 void
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158 GLCanvas::mouseMoveEvent (QMouseEvent* xevent)
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159 {
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160 canvasMouseMoveEvent (xevent);
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161 }
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162
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163 void
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164 GLCanvas::mousePressEvent (QMouseEvent* xevent)
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165 {
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166 canvasMousePressEvent (xevent);
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167 }
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168
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169 void
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170 GLCanvas::mouseReleaseEvent (QMouseEvent* xevent)
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171 {
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172 canvasMouseReleaseEvent (xevent);
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173 }
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174
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175 void
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176 GLCanvas::wheelEvent (QWheelEvent* xevent)
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177 {
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178 canvasWheelEvent (xevent);
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179 }
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180
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181 void
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182 GLCanvas::keyPressEvent (QKeyEvent* xevent)
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183 {
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184 if (! canvasKeyPressEvent (xevent))
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185 QGLWidget::keyPressEvent (xevent);
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186 }
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187
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188 void
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189 GLCanvas::keyReleaseEvent (QKeyEvent* xevent)
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190 {
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191 if (! canvasKeyReleaseEvent (xevent))
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192 QGLWidget::keyReleaseEvent (xevent);
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193 }
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194
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195 }; // namespace QtHandles