Select an Entry or Add a New One ComboBox: Difference between revisions
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[[Category:HowTo]] | [[Category:HowTo]] | ||
[[Category:snippets]] | |||
The following method acts on a combo box searching for a specified text string and: | |||
* if the string is present select it | |||
The following method acts on a combo box searching for a specified text string and: | * if the string is not present add it to the combo box model | ||
In the following piece of code ''myText'' is the QString searched for and ''combo'' is a reference to the combo box. | In the following piece of code ''myText'' is the QString searched for and ''combo'' is a reference to the combo box. | ||
<code> bool found = false; | <code> | ||
bool found = false; | |||
if( ! found ){ | for( int i = 0; i < combo->count() && ! found ; i++ ) { | ||
if( combo->itemText( i ) == myText ) { | |||
combo->setCurrentIndex( i ); | |||
found = true; | |||
} | |||
} | |||
if (!found ) { | |||
int index = combo->count(); | |||
combo->addItem( myText ); | |||
} | |||
combo->setCurrentIndex( index ); | combo->setCurrentIndex( index ); | ||
</code> |
Latest revision as of 14:20, 24 March 2016
The following method acts on a combo box searching for a specified text string and:
- if the string is present select it
- if the string is not present add it to the combo box model
In the following piece of code myText is the QString searched for and combo is a reference to the combo box.
bool found = false;
for( int i = 0; i < combo->count() && ! found ; i++ ) {
if( combo->itemText( i ) == myText ) {
combo->setCurrentIndex( i );
found = true;
}
}
if (!found ) {
int index = combo->count();
combo->addItem( myText );
}
combo->setCurrentIndex( index );