Qt learning-image loading

Construction

Class Dialog

Add a private member in dialog. h

void paintEvent(QPaintEvent *);

Add the following code to dialog. cpp:

void Dialog::paintEvent(QPaintEvent *)

{

    QPainter painter(this);

    QPixmap pix;

    pix.load("image/Win7.jpg");

    painter.drawPixmap(0,0,100,100,pix);

}

In the painter06-build-desktop-Qt_4_8_1_for_Desktop _-_ mingw _ qt_sdk ____ \ debugdirectory, create a folder named imageimage win7.jpg.

The running program cannot always load images.

Hey, let's take a look at the compilation output.

Mingw32-make.exe [1]: Entering directory 'e:/My Documents/qt1/painter06-build-desktop-Qt_4_8_1_for_Desktop _-_ mingw _ qt_sdk ____'

Mingw32-make.exe [1]: Nothing to be done for 'first '.

Mingw32-make.exe [1]: Leaving directory 'e:/My Documents/qt1/painter06-build-desktop-Qt_4_8_1_for_Desktop _-_ mingw _ qt_sdk ____'

He only entered the painter06-build-desktop-Qt_4_8_1_for_Desktop _-_ mingw _ qt_sdk ____ 'directory, and did not enter the DEBUG directory, so of course he could not find the picture!

Now I know how to modify it.

In the program

pix.load("image/Win7.jpg");

Modify

pix.load("debug/image/Win7.jpg");

Okay! Pleasure!