the art of living book william hart

... The Book of Qt Daniel Molkentin The Book of Qt The Art of Building Qt Applications ® Munich San Francisco The Book of Qt 4: The Art of Building Qt Applications Copyright ... its libraries Each of these files contains the interface descriptions of all of the classes of a library; the name of the header file matches the name of the library Thus, in the examples so far, ... which knowledge of the contents of the Qt libraries is of particular interest Besides the header files for individual class definitions, whose filenames match the names of the classes they describe,...

Ngày tải lên: 28/04/2014, 16:56

... Regardless of the amount of attention they can spend on any single company, they are still some of the heroes of the new economy Nevertheless, for the past few years there has been no shortage of capital ... was getting the one on the current economics of the Internet, or the lack of them, and why the really smart companies were building brand and staking out territory, at the expense of profits He ... time, they often say, “It was the music, right? The other things — the mayor's office, the teaching—those paid your way, but your heart was in the rock concerts, right?” No, I explain, my heart...

Ngày tải lên: 05/07/2014, 07:35

... The Book of Qt Daniel Molkentin The Book of Qt The Art of Building Qt Applications ® Munich San Francisco The Book of Qt 4: The Art of Building Qt Applications Copyright ... its libraries Each of these files contains the interface descriptions of all of the classes of a library; the name of the header file matches the name of the library Thus, in the examples so far, ... which knowledge of the contents of the Qt libraries is of particular interest Besides the header files for individual class definitions, whose filenames match the names of the classes they describe,...

Ngày tải lên: 13/08/2014, 08:21

... Each of our three slots accepts an argument of the type const QString& In this way the textChanged() signal of the function can pass the new text of the line edit As the argument type for the ... one of the line-edit widgets, the ByteConverterDialog class calls the corresponding slot, which adjusts the value of the two other line edits Figure 2.5 depicts this Such a dovetailing of the ... can connect the signals and slots of the line-edit widgets from the ByteConverterDialog to the signals and slots of the ByteConverter class, for example, the hexChanged() signal of the decEdit...

Ngày tải lên: 13/08/2014, 08:21

... only granting the class members access to their own methods The internal details of the class are thus “cut off” from the other classes, and you can change the internal design of the class without ... specifies the proportions of the widgets to each other If, for example, you have a widget with a stretch value of and the second one with a value of 2, then they jointly occupy the entire space in the ... } Since the widgets of the Designer-generated dialog are available as publicly accessible members of the UI class, they can be fine-tuned in the code later on by calling the methods of the respective...

Ngày tải lên: 13/08/2014, 08:21

... first determine the alignment of the splitter We obtain the position of the splitter, using the QSplitter::indexOf() method This is also the position of the widget lying to the right of (or directly ... depends on the size of the widget in front of the splitter, which is why the code detects the size of the widget that occupies the space up to the position pos-1, by accessing sizes() If the left ... this function also requires the position of the widget, apart from the stretch, you first have to define the position of the widget using the indexOf() method This returns the correct position for...

Ngày tải lên: 13/08/2014, 08:21

... method of the target object The task of the event() method is to either process or ignore the incoming events, depending on the requirements of the class of the receiving object This method is therefore ... Again, the first three parameters specify the pointer to the parent widget, the heading, and the user query This is followed by the list of strings to be displayed Then comes the index of the list ... separates the line into the components of the address, removes the quote characters, and returns the resulting dataset The constructor uses this helper function to turn each of the lines of address book...

Ngày tải lên: 13/08/2014, 08:21

... the description of the address book entry using the tag Each row of the table consists of two cells, one of which contains the name of the address book field (the key) and the other, the ... are datasets in the address book, we return false—otherwise, we would run the risk of the application crashing We also need to announce the removal of lines and signal the end of the action If ... example, the value in the name field from the departments table should appear in the third column instead of the value in the foreign key field (that is, the id field) of the departments table This...

Ngày tải lên: 13/08/2014, 08:21

... height); Then we define the dimensions of the chart These should exactly match the height of the widget We obtain this height value from the current size of the widget: 285 10 The Graphics Library “Arthur” ... of the square of the pie,5 the longest entry in the hash table, the width of an x, the width of the legend square (fm) and the width of the × 10 pixel–wide margin on both sides of the legend square ... draw the legend text next to the square So that the distance from the square to the text is adjusted to the size of the font used, we select the width of the letter x in the respective font as the...

Ngày tải lên: 13/08/2014, 08:21

... the name of the file to be analyzed as the first argument If there is a second argument, it writes the output to the file named there Otherwise, the modified file appears on the console via the standard ... The loop is therefore started with the same blocking call as in the case of QApplication The event loop of threads can also be terminated by the quit() slot or the exit() function These function ... strengths come to the fore in its efficient analysis of large documents The specification of SAX has now been taken over by the SAX Project.2 If you want to use the functionality of either of these two...

Ngày tải lên: 13/08/2014, 08:21

... QtXml method of the active model We obtain the index of the current entry from the argument of the slot As the role we select UserRole, where we previously stored the complete contents of the ... flexibly to the particularities of another language One aspect of this is the translation of all visible texts into the target language The direction of text flow, on which the arrangement of widgets ... (QDomNodes) QDomNodes know the principle of parenthood: If they are inserted in another part of the tree, they are not copied, but change their location in the tree The node into which a QDomNode...

Ngày tải lên: 13/08/2014, 08:21

... STL iterators, one of which marks the beginning of the area in the first data structure containing the elements to be compared, and the other, which marks the end of this area The third parameter ... qCopy(), but expects the position of the last element to be copied as the third parameter, rather than the first It inserts the values to be copied from the specified elements of the second container ... Tulip has the function qFind() This finds the value specified as the third argument, starting from the element to which the iterator named as the first argument points The last element of the search...

Ngày tải lên: 13/08/2014, 08:21

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Ngày tải lên: 08/08/2012, 16:40