I Can run QT Apps on MING. Updated again: June, 01 2007

[joaorodrigo]

Weel, when we are going to see a working app in QT ?

[dedraks]

Weel, when we are going to see a working app in QT ?

Some progress. Bellow is an application derived from ZBaseDialog with two QPushButtons, one QLineEdit and one QComboBox.
I needed to implement a lot of methods from ZBaseDialog that are pure virtual.
I can enter any text on QLineEdit and I can select any Item from QComboBox but I can't connect de buttons to a signal handler.
The QObject::connect() method returns without erros but when I click on button the handler is not called.
So, I continue testing untill I can run myown apps.

[jemyzhang]

Weel, when we are going to see a working app in QT ?

Some progress. Bellow is an application derived from ZBaseDialog with two QPushButtons, one QLineEdit and one QComboBox.
I needed to implement a lot of methods from ZBaseDialog that are pure virtual.
I can enter any text on QLineEdit and I can select any Item from QComboBox but I can't connect de buttons to a signal handler.
The QObject::connect() method returns without erros but when I click on button the handler is not called.
So, I continue testing untill I can run myown apps.

Great!
But how can you display strings, when i use QFont, I Just received error like:
main.o(.text+0x4c): In function `main':
: undefined reference to `QFont::QFont[in-charge](QString const&, int, int, bool)'
....Can you help me? Thanks.

[dedraks]

I'm using the overloaded constructor of the QPushButton.

Class MyDialog : public ZBaseDialog
{
...
QScrollView *scrollview = new QScrollView( this );
QPushButton *button = new QPushButton( "Button", scrollview );
button->move( x, y );
...
} // Class MyDialog

...

int main(int argc, char **argv)
{
    ZApplication app( argc, argv );
    MyDialog *myDialog = new MyDialog( );
    myDialog->show( );
    app.showMainWidget( myDialog );
    return app.exec( );
}

[jemyzhang]

Can you show me the source code?

[gurneek]

'

bravo ded.....

its looking great app.... cool

.

[dedraks]

First topic updated.

[jemyzhang]

Thanks for your efforts, waiting for your good news!!

[ghostwheel]

hello! That is great!

I think you are using the cross-compile environment that was posted by Phantom8 some time ago, right? Could you Please download it somewhere? I lost my original download, and can't access it now....

thanks!

[ghostwheel]

I finally managed to compile dgenius by using parts from various distributions. It ran nicely!

Then I wanted to add text on the canvas. I can get text to display, but I can not get it to display in the right place. It always is displayed in the 0,0 corner.

I think I traced it down to the following problem:
In qcanvas.h, for the class QCanvasItem, there is a function called move, that puts the text in a certain location. In the file I use, it is defined as

void move(double x, double y);

and all the values in QCanvasItem are stored as double. I think I managed to confirm that on the phone these are not stored as double, but something smaller - maybe float.

------------- Update

I manage to draw on the canvas using rectangles or lines - these take integer as location. But the function to move something no the canvas, which is called move(), takes two doubles, and has some problems. I think the double format used by the qt library is somehow different. So text, which needs to be moved to a certain place, needs the move() function for location. So there is no problem in drawing lines/rectangles/circles/pixmaps on the canvas, but there is a problem to put text there....

But I don't know how to proceed from here. How do I modify the library defintions/include files to use floats? Does anyone have a better qcanvas.h that does not use double?