1 | /****************************************************************************
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2 | **
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3 | ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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4 | ** Contact: Qt Software Information ([email protected])
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5 | **
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6 | ** This file is part of the documentation of the Qt Toolkit.
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7 | **
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8 | ** $QT_BEGIN_LICENSE:LGPL$
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9 | ** Commercial Usage
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10 | ** Licensees holding valid Qt Commercial licenses may use this file in
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11 | ** accordance with the Qt Commercial License Agreement provided with the
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12 | ** Software or, alternatively, in accordance with the terms contained in
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13 | ** a written agreement between you and Nokia.
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14 | **
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15 | ** GNU Lesser General Public License Usage
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16 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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17 | ** General Public License version 2.1 as published by the Free Software
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18 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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19 | ** packaging of this file. Please review the following information to
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20 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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21 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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22 | **
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23 | ** In addition, as a special exception, Nokia gives you certain
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24 | ** additional rights. These rights are described in the Nokia Qt LGPL
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25 | ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
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26 | ** package.
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27 | **
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28 | ** GNU General Public License Usage
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29 | ** Alternatively, this file may be used under the terms of the GNU
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30 | ** General Public License version 3.0 as published by the Free Software
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31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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32 | ** packaging of this file. Please review the following information to
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33 | ** ensure the GNU General Public License version 3.0 requirements will be
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34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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35 | **
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36 | ** If you are unsure which license is appropriate for your use, please
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37 | ** contact the sales department at [email protected].
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38 | ** $QT_END_LICENSE$
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39 | **
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40 | ****************************************************************************/
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41 |
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42 | #include <QtGui>
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43 |
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44 | typedef QDialog WordCountDialog;
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45 | typedef QDialog FindDialog;
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46 |
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47 | #define this 0
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48 | #define setWordCount(x) isVisible()
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49 |
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50 | QString tr(const char *text)
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51 | {
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52 | return QApplication::translate(text, text);
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53 | }
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54 |
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55 | class EditorWindow : public QMainWindow
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56 | {
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57 | public:
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58 | void find();
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59 | void countWords();
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60 |
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61 | private:
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62 | FindDialog *findDialog;
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63 | };
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64 |
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65 | //! [0]
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66 | void EditorWindow::find()
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67 | {
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68 | if (!findDialog) {
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69 | findDialog = new FindDialog(this);
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70 | connect(findDialog, SIGNAL(findNext()), this, SLOT(findNext()));
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71 | }
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72 |
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73 | findDialog->show();
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74 | findDialog->raise();
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75 | findDialog->activateWindow();
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76 | }
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77 | //! [0]
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78 |
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79 | //! [1]
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80 | void EditorWindow::countWords()
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81 | {
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82 | WordCountDialog dialog(this);
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83 | dialog.setWordCount(document().wordCount());
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84 | dialog.exec();
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85 | }
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86 | //! [1]
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87 |
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88 | inline bool boo()
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89 | {
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90 | QMessageBox::information(this, "Application name",
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91 | "Unable to find the user preferences file.\n"
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92 | "The factory default will be used instead.");
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93 |
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94 | QString filename;
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95 | if (QFile::exists(filename) &&
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96 | QMessageBox::question(
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97 | this,
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98 | tr("Overwrite File? -- Application Name"),
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99 | tr("A file called %1 already exists."
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100 | "Do you want to overwrite it?")
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101 | .arg(filename),
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102 | tr("&Yes"), tr("&No"),
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103 | QString(), 0, 1))
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104 | return false;
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105 |
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106 | switch(QMessageBox::warning(this, "Application name",
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107 | "Could not connect to the <mumble> server.\n"
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108 | "This program can't function correctly "
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109 | "without the server.\n\n",
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110 | "Retry",
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111 | "Quit", 0, 0, 1)) {
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112 | case 0: // The user clicked the Retry again button or pressed Enter
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113 | // try again
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114 | break;
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115 | case 1: // The user clicked the Quit or pressed Escape
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116 | // exit
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117 | break;
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118 | }
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119 |
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120 | switch(QMessageBox::information(this, "Application name here",
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121 | "The document contains unsaved changes\n"
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122 | "Do you want to save the changes before exiting?",
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123 | "&Save", "&Discard", "Cancel",
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124 | 0, // Enter == button 0
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125 | 2)) { // Escape == button 2
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126 | case 0: // Save clicked or Alt+S pressed or Enter pressed.
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127 | // save
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128 | break;
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129 | case 1: // Discard clicked or Alt+D pressed
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130 | // don't save but exit
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131 | break;
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132 | case 2: // Cancel clicked or Escape pressed
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133 | // don't exit
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134 | break;
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135 | }
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136 |
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137 | switch(QMessageBox::warning(this, "Application name here",
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138 | "Could not save the user preferences,\n"
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139 | "because the disk is full. You can delete\n"
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140 | "some files and press Retry, or you can\n"
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141 | "abort the Save Preferences operation.",
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142 | QMessageBox::Retry | QMessageBox::Default,
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143 | QMessageBox::Abort | QMessageBox::Escape)) {
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144 | case QMessageBox::Retry: // Retry clicked or Enter pressed
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145 | // try again
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146 | break;
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147 | case QMessageBox::Abort: // Abort clicked or Escape pressed
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148 | // abort
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149 | break;
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150 | }
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151 |
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152 | QString errorDetails;
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153 | QMessageBox::critical(0, "Application name here",
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154 | QString("An internal error occurred. Please ") +
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155 | "call technical support at 1234-56789 and report\n"+
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156 | "these numbers:\n\n" + errorDetails +
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157 | "\n\nApplication will now exit.");
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158 |
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159 | QMessageBox::about(this, "About <Application>",
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160 | "<Application> is a <one-paragraph blurb>\n\n"
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161 | "Copyright 1991-2003 Such-and-such. "
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162 | "<License words here.>\n\n"
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163 | "For technical support, call 1234-56789 or see\n"
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164 | "http://www.such-and-such.com/Application/\n");
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165 |
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166 | {
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167 | // saving the file
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168 | QMessageBox mb("Application name here",
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169 | "Saving the file will overwrite the original file on the disk.\n"
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170 | "Do you really want to save?",
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171 | QMessageBox::Information,
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172 | QMessageBox::Yes | QMessageBox::Default,
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173 | QMessageBox::No,
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174 | QMessageBox::Cancel | QMessageBox::Escape);
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175 | mb.setButtonText(QMessageBox::Yes, "Save");
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176 | mb.setButtonText(QMessageBox::No, "Discard");
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177 | switch(mb.exec()) {
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178 | case QMessageBox::Yes:
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179 | // save and exit
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180 | break;
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181 | case QMessageBox::No:
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182 | // exit without saving
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183 | break;
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184 | case QMessageBox::Cancel:
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185 | // don't save and don't exit
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186 | break;
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187 | }
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188 | }
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189 |
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190 | {
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191 | // hardware failure
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192 | //! [2]
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193 | QMessageBox mb("Application Name",
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194 | "Hardware failure.\n\nDisk error detected\nDo you want to stop?",
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195 | QMessageBox::Question,
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196 | QMessageBox::Yes | QMessageBox::Default,
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197 | QMessageBox::No | QMessageBox::Escape,
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198 | QMessageBox::NoButton);
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199 | if (mb.exec() == QMessageBox::No) {
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200 | // try again
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201 | //! [2]
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202 | }
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203 | }
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204 | }
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205 |
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206 | inline void moo()
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207 | {
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208 | int numFiles;
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209 | //! [3]
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210 | QProgressDialog progress("Copying files...", "Abort Copy", 0, numFiles, this);
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211 | progress.setWindowModality(Qt::WindowModal);
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212 |
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213 | for (int i = 0; i < numFiles; i++) {
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214 | progress.setValue(i);
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215 |
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216 | if (progress.wasCanceled())
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217 | break;
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218 | //... copy one file
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219 | }
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220 | progress.setValue(numFiles);
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221 | //! [3]
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222 | }
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223 |
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224 | class Operation : public QObject
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225 | {
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226 | public:
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227 | Operation(QObject *parent);
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228 | void perform();
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229 | void cancel();
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230 |
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231 | private:
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232 | int steps;
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233 | QProgressDialog *pd;
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234 | QTimer *t;
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235 | };
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236 |
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237 | //! [4]
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238 | // Operation constructor
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239 | Operation::Operation(QObject *parent)
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240 | : QObject(parent), steps(0)
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241 | {
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242 | pd = new QProgressDialog("Operation in progress.", "Cancel", 0, 100);
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243 | connect(pd, SIGNAL(canceled()), this, SLOT(cancel()));
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244 | t = new QTimer(this);
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245 | connect(t, SIGNAL(timeout()), this, SLOT(perform()));
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246 | t->start(0);
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247 | }
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248 | //! [4] //! [5]
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249 |
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250 | void Operation::perform()
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251 | {
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252 | pd->setValue(steps);
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253 | //... perform one percent of the operation
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254 | steps++;
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255 | if (steps > pd->maximum())
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256 | t->stop();
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257 | }
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258 | //! [5] //! [6]
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259 |
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260 | void Operation::cancel()
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261 | {
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262 | t->stop();
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263 | //... cleanup
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264 | }
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265 | //! [6]
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266 |
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267 | int main()
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268 | {
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269 | }
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