author | Eckhart Koeppen <eckhart.koppen@nokia.com> |
Wed, 21 Apr 2010 12:15:23 +0300 | |
branch | RCL_3 |
changeset 12 | cc75c76972ee |
parent 7 | 3f74d0d4af4c |
permissions | -rw-r--r-- |
7
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/**************************************************************************** |
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** |
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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** All rights reserved. |
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** Contact: Nokia Corporation (qt-info@nokia.com) |
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** |
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** This file is part of the documentation of the Qt Toolkit. |
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** |
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** $QT_BEGIN_LICENSE:LGPL$ |
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** No Commercial Usage |
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** This file contains pre-release code and may not be distributed. |
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** You may use this file in accordance with the terms and conditions |
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** contained in the Technology Preview License Agreement accompanying |
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** this package. |
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** |
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** GNU Lesser General Public License Usage |
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** Alternatively, this file may be used under the terms of the GNU Lesser |
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** General Public License version 2.1 as published by the Free Software |
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** Foundation and appearing in the file LICENSE.LGPL included in the |
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** packaging of this file. Please review the following information to |
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** ensure the GNU Lesser General Public License version 2.1 requirements |
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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** |
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** In addition, as a special exception, Nokia gives you certain additional |
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** rights. These rights are described in the Nokia Qt LGPL Exception |
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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** |
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** If you have questions regarding the use of this file, please contact |
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** Nokia at qt-info@nokia.com. |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** $QT_END_LICENSE$ |
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** |
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****************************************************************************/ |
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|
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/*! |
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\page qt-embedded-envvars.html |
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|
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\title Qt for Embedded Linux Environment Variables |
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\ingroup qt-embedded-linux |
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|
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These environment variables are relevant to \l{Qt for Embedded Linux} |
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users. |
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|
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\table |
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\header \o Variable \o Description |
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|
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\row |
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\o \bold POINTERCAL_FILE \target POINTERCAL_FILE |
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\o Specifies the file containing the data used to calibrate the |
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pointer device. |
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See also QWSCalibratedMouseHandler and \l{Qt for Embedded Linux Pointer |
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Handling}. |
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\row |
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\o \bold QT_ONSCREEN_PAINT \target QT_ONSCREEN_PAINT |
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\o If defined, the application will render its widgets directly on |
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screen. The affected regions of the screen will not be modified by |
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the screen driver unless another window with a higher focus |
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requests (parts of) the same region. |
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|
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Setting this environment variable is equivalent to setting the |
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Qt::WA_PaintOnScreen attribute for all the widgets in the |
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application. |
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See also the Qt for Embedded Linux \l{Qt for Embedded Linux Architecture#Graphics |
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Rendering}{graphics rendering} documentation. |
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\row |
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\o \bold QWS_SW_CURSOR \target QWS_SW_CURSOR |
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\o If defined, the software mouse cursor is always used (even when using an |
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accelerated driver that supports a hardware cursor). |
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\row |
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\o \bold QWS_DISPLAY \target QWS_DISPLAY |
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\o |
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Specifies the display type and framebuffer. For example, if the |
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current shell is bash, ksh, zsh or sh: |
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\snippet doc/src/snippets/code/doc_src_emb-envvars.qdoc 0 |
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91 |
|
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92 |
The valid values for the \c <driver> argument are \c LinuxFb, \c |
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QVFb, \c VNC, \c Transformed, \c Multi and \l |
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{QScreenDriverPlugin::keys()}{keys} identifying custom drivers, |
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and the \c {<display num>} argument is used to separate screens |
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that are using the same screen driver and to enable multiple |
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97 |
displays (see the \l {Running Qt for Embedded Linux Applications} |
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documentation for more details). |
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99 |
|
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100 |
The driver specific options are described in the \l{Qt for Embedded Linux |
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101 |
Display Management}{display management} documentation. |
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102 |
|
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103 |
\row |
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\o \bold QWS_SIZE \target QWS_SIZE |
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105 |
\o |
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106 |
|
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Specifies the size of the \l{Qt for Embedded Linux} window which is centered |
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108 |
within the screen. For example, if the current shell is bash, ksh, |
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109 |
zsh or sh: |
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110 |
|
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111 |
\snippet doc/src/snippets/code/doc_src_emb-envvars.qdoc 1 |
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112 |
|
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113 |
\row |
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\o \bold QWS_MOUSE_PROTO \target QWS_MOUSE_PROTO |
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115 |
\o |
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116 |
|
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Specifies the driver for pointer handling. For example, if the |
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118 |
current shell is bash, ksh, zsh or sh: |
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119 |
|
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120 |
\snippet doc/src/snippets/code/doc_src_emb-envvars.qdoc 2 |
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121 |
|
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122 |
The valid values for the \c <driver> argument are \c MouseMan, \c |
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123 |
IntelliMouse, \c Microsoft, \c VR41xx, \c LinuxTP, \c Yopy. \c |
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124 |
Tslib and \l {QMouseDriverPlugin::keys()}{keys} identifying |
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125 |
custom drivers, and the driver specific options are typically a |
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126 |
device, e.g., \c /dev/mouse for mouse devices and \c /dev/ts for |
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127 |
touch panels. |
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128 |
|
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129 |
Multiple keyboard drivers can be specified in one go: |
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130 |
|
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131 |
\snippet doc/src/snippets/code/doc_src_emb-envvars.qdoc 3 |
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132 |
|
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Input will be read from all specified drivers. |
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134 |
Note that the \c Vr41xx driver also accepts two optional |
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135 |
arguments: \c press=<value> defining a mouseclick (the default |
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136 |
value is 750) and \c filter=<value> specifying the length of the |
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filter used to eliminate noise (the default length is 3). For |
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138 |
example: |
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139 |
|
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140 |
\snippet doc/src/snippets/code/doc_src_emb-envvars.qdoc 4 |
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141 |
|
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142 |
See also \l {Qt for Embedded Linux Pointer Handling}. |
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143 |
|
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144 |
\row |
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145 |
\o \bold QWS_KEYBOARD \target QWS_KEYBOARD |
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146 |
\o |
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147 |
|
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148 |
Specifies the driver and device for character input. For example, if the |
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149 |
current shell is bash, ksh, zsh or sh: |
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150 |
|
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151 |
\snippet doc/src/snippets/code/doc_src_emb-envvars.qdoc 5 |
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152 |
|
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153 |
The valid values for the \c <driver> argument are \c SL5000, \c |
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154 |
Yopy, \c VR41xx, \c TTY, \c USB and \l |
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155 |
{QKbdDriverPlugin::keys()}{keys} identifying custom drivers, |
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156 |
and the driver specific options are typically a device, e.g., \c |
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157 |
/dev/tty0. |
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158 |
|
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159 |
Multiple keyboard drivers can be specified in one go: |
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160 |
|
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161 |
\snippet doc/src/snippets/code/doc_src_emb-envvars.qdoc 6 |
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162 |
|
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163 |
Input will be read from all specified drivers. |
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164 |
|
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165 |
See also \l {Qt for Embedded Linux Character Input}. |
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166 |
|
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167 |
\endtable |
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168 |
*/ |