diff options
Diffstat (limited to 'doc/html/designer-manual-3.html')
| -rw-r--r-- | doc/html/designer-manual-3.html | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/doc/html/designer-manual-3.html b/doc/html/designer-manual-3.html index 46fdd66ff..4d584665d 100644 --- a/doc/html/designer-manual-3.html +++ b/doc/html/designer-manual-3.html @@ -126,7 +126,7 @@ body { background: #ffffff; color: black; } <p align="center"><img align="middle" src="mw-objexplor.png" width="328" height="465"> </p> <blockquote><p align="center"><em>Object Explorer</em></p></blockquote> -<!-- index Code Editing --><!-- index Subclassing --><!-- index Forward declarations --><!-- index Includes --><!-- index Adding!Code --><!-- index Adding!Forward declarations --><!-- index Adding!Includes --><!-- index Adding!Class variables --><!-- index Class variables --><!-- index Deleting!Forward declarations --><!-- index Deleting!Includes --><!-- index Deleting!Class variables --><!-- index Forms!Forward declarations --><!-- index Forms!Class variables --><!-- index Forms!Code editing --><!-- index Forms!destructor --><!-- index Forms!constructor --><p>In the original version of <em>TQt Designer</em> if you wanted to provide code for a form you had to subclass the form and put your code in the subclass. This version fully supports the subclassing approach, but now provides an alternative: placing your code directly into forms. Writing code in <em>TQt Designer</em> is not tquite the same as subclassing, for example you cannot get direct access to the form's constructor or destructor. If you need code to be executed by the constructor create a slot called<!-- index init() --> <tt>void init()</tt>; if it exists it will be called from the constructor. Similarly, if you need code to be executed before destruction create a slot called<!-- index destroy() --> <tt>void destroy()</tt>. You can also add your own class variables which will be put in the generated constructor's code, and you can add forward declarations and any includes you retquire. To add a variable or declaration, right click the appropriate item, e.g. Class Variables, then click <b>New</b> then enter your text, e.g. <tt>TQString m_filename</tt>. If one or more items exist, right click to pop up a menu that has New, Edit and Delete options. If you want to enter multiple items, e.g. multiple include files or multiple data members, it is easiest to right click in the relevant section, then click <b>Edit</b> to invoke an Edit dialog. To edit code, just click the name of a function to invoke the code editor. Code editing and creating slots are covered later in the chapter.</p> +<!-- index Code Editing --><!-- index Subclassing --><!-- index Forward declarations --><!-- index Includes --><!-- index Adding!Code --><!-- index Adding!Forward declarations --><!-- index Adding!Includes --><!-- index Adding!Class variables --><!-- index Class variables --><!-- index Deleting!Forward declarations --><!-- index Deleting!Includes --><!-- index Deleting!Class variables --><!-- index Forms!Forward declarations --><!-- index Forms!Class variables --><!-- index Forms!Code editing --><!-- index Forms!destructor --><!-- index Forms!constructor --><p>In the original version of <em>TQt Designer</em> if you wanted to provide code for a form you had to subclass the form and put your code in the subclass. This version fully supports the subclassing approach, but now provides an alternative: placing your code directly into forms. Writing code in <em>TQt Designer</em> is not quite the same as subclassing, for example you cannot get direct access to the form's constructor or destructor. If you need code to be executed by the constructor create a slot called<!-- index init() --> <tt>void init()</tt>; if it exists it will be called from the constructor. Similarly, if you need code to be executed before destruction create a slot called<!-- index destroy() --> <tt>void destroy()</tt>. You can also add your own class variables which will be put in the generated constructor's code, and you can add forward declarations and any includes you retquire. To add a variable or declaration, right click the appropriate item, e.g. Class Variables, then click <b>New</b> then enter your text, e.g. <tt>TQString m_filename</tt>. If one or more items exist, right click to pop up a menu that has New, Edit and Delete options. If you want to enter multiple items, e.g. multiple include files or multiple data members, it is easiest to right click in the relevant section, then click <b>Edit</b> to invoke an Edit dialog. To edit code, just click the name of a function to invoke the code editor. Code editing and creating slots are covered later in the chapter.</p> <!-- index Subclassing --><p>If you subclass the form you create your own<!-- index .cpp --> <tt>.cpp</tt> files which can contain your own constructor, destructor, functions, slots, declarations and variables as your retquirements dictate. (See <a href="designer-manual-6.html#1">Subclassing</a> for more information.)</p> </blockquote> <h4><a name="4-3"></a>Adding Custom Actions</h4> @@ -301,7 +301,7 @@ body { background: #ffffff; color: black; } <p align="center"><img align="middle" src="mw-conn4.png" width="600" height="407"> </p> <h4><a name="6-5"></a>Editing the Code: Setting Up</h4> -<p>There is tquite a lot of code to include in the application, but this does not mean that a lot of typing is retquired! All the code is reproduced here so, if you're reading an electronic copy, you can simply cut and paste. If you're reading a print copy, all the code is provided in <tt>/tools/designer/examples/colortool</tt>; simply open the relevant <tt>.ui.h</tt> files and copy and paste from there into your own version of the project.</p> +<p>There is quite a lot of code to include in the application, but this does not mean that a lot of typing is retquired! All the code is reproduced here so, if you're reading an electronic copy, you can simply cut and paste. If you're reading a print copy, all the code is provided in <tt>/tools/designer/examples/colortool</tt>; simply open the relevant <tt>.ui.h</tt> files and copy and paste from there into your own version of the project.</p> <blockquote> <p align="center"><b> Cutting & Pasting Into the Code Editor</b></p> <p>If you cut and paste code from this manual, because we've indented the code for readability, the code will be over-indented in <em>TQt Designer</em>. This is easily solved. Simply select the function containing the pasted code (either with the mouse, or <b>Shift+Arrow</b>s) and press <b>Tab</b>: this will make <em>TQt Designer</em> fix the indentation. Note that you must select the <em>entire</em> function, including its name and parameters.</p> @@ -474,7 +474,7 @@ body { background: #ffffff; color: black; } </pre> <p>When <em>TQt Designer</em> generates a <tt>main.cpp</tt> file it includes this line:</p> <pre> - a.connect( &a, SIGNAL( lastWindowClosed() ), &a, SLOT( tquit() ) ); + a.connect( &a, SIGNAL( lastWindowClosed() ), &a, SLOT( quit() ) ); </pre> <p>If we left this code as-is, the user could by-pass our own termination code by clicking the main window's close (X) button. Since we want to give the user the option to save any unsaved changes we need to ensure that we intercept any attempt to close the application. To achieve this we delete the connection and add a new slot, <tt>closeEvent()</tt> which will intercept attempts to close the application and call our <tt>fileExit()</tt> function.</p> <p>Click <tt>main.cpp</tt> in the Project Overview window. The file will appear in an editing window. Delete the connect line.</p> |