Dialog Mask

[thahir1986]

Hi Friends,

I checked some of the threads, but in that thread they only discussed about how to remove(mask) the background of the widget.

But i need bring the qdialog the irregular shape that depends on the image we set as backgroud for the widget.

For example i have an image like iphone..my qdialog should be look like iphone and make the remaining thing as tranparent.

Help please.....

[wysota]

Use the image as the mask or set a "translucent background" attribute on your dialog so that only the areas you paint yourself are opaque.

[thahir1986]

Thank for ur quick reply zen,

i need further clarification...

I have a QDialog.ui ...in that stylesheet property for the QFrame i was set

QFrame
{
    background-image: url(:/images/messagebox.png) no-repeat;
}

QFrame
{
    background-image: url(:/images/messagebox.png) no-repeat;
}

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and in my QDialog constructor

QPixmap pixmap(":/images/messagebox.png");
 
    ui->frame->setMask(pixmap.mask());
    QRegion reg(frameGeometry());
    reg-=QRegion(geometry());
    reg+=childrenRegion();
    setMask(reg);

QPixmap pixmap(":/images/messagebox.png");
    
    ui->frame->setMask(pixmap.mask());
    QRegion reg(frameGeometry());
    reg-=QRegion(geometry());
    reg+=childrenRegion();
    setMask(reg);

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but i got an error

dialog.cpp: In constructor ‘Dialog:ialog(QWidget*)’:
dialog.cpp:12: error: invalid use of incomplete type ‘struct QBitmap’
/opt/qtsdk-2010.05/qt/include/QtGui/qwindowdefs.h:77: error: forward declaration of ‘struct QBitmap’
make: *** [dialog.o] Error 1

[wysota]

#include <QBitmap>

#include <QBitmap>

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But this will not work. You need to set the mask on the top-level widget only (the dialog, not the frame that's in it).

[thahir1986]

Thanks..It works.

But one silly question finally..

I want to remove the title window of the QDialog, for that i did give the

setAttribute(Qt::FramelessWindowHint, true);

setAttribute(Qt::FramelessWindowHint, true);

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but again i got an error like,

dialog.cpp:14: error: no matching function for call to ‘Dialog::setAttribute(Qt::WindowType, bool)’
/opt/qtsdk-2010.05/qt/include/QtGui/qwidget.h:607: note: candidates are: void QWidget::setAttribute(Qt::WidgetAttribute, bool)
make: *** [dialog.o] Error 1


aahh..i want to learn qt through, but i can't.

[wysota]

It's a hint not an attribute.

aahh..i want to learn qt through, but i can't.

I suggest to learn C++ first.

[thahir1986]

I suggest to learn C++ first.

U r correct indeed.. i need learn that first indeed...Could tell me which is the best book to learn c++ crystal clear...?