Setting default color for brush
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Hi there.
This is my code for an eraser:
@void Imageviewer::penErase()
{
QColor newcolor = QColorDialog::getColor();;
if(count==0)
{
painter=new paint;
imagelabel->clear();
setCentralWidget(painter);
painter->openImage(fileName);
count++;
}@
@painter->setPenColor(255,255,255);@I want to set the color for the brush as white so that it acts as an eraser. can anyone help me make the required changes
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do you mean QBrush? Because it's not clear whats the base class type of "paint".
QBrush has an "constructor":http://qt-project.org/doc/qt-4.8/qbrush.html#QBrush-3 which accepts a QColor as parameter.
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ok but a QPainter doesn't have a method called setPenColor(). So i guess you have implemented it?!
If so it should be analog for the brush. -
I created that function:
void paint::setPenColor(const QColor &newColor)
//! [5] //! [6]
{
myPenColor = newColor;
}Parts declared in paint.h header file{
void setPenColor(const QColor &newColor);QColor myPenColor;}
These are the extra info. related to the function
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QPainter::setPen(QColor) and QPainter::setBrush(QColor)
but i don't know what you actually are doing. :)
you defined the method as
@paint::setPenColor(const QColor &newColor)@
but using it as
@painter->setPenColor(255,255,255);@This can't work.
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use the 2 QPainter methods i've posted.
and as i said, the code you've posted isn't clear to me, so i can't help you with the information you have posted so far.
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hmm...okay...so like I have to choose the white color. How to use the setpen method?
what's the exact code for that...
(sorry for asking the exact thing...usually i would have worked it out, but i have to show this in half an hour...so, i think u can understand the desperation) :P -
@
painter; //your QPainter instancepainter->setPen( QColor(Qt::white) );
painter->setBrush( QColor(Qt::white) );
@good luck!
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post the complete code please of the affected class/file.
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good to hear.
