一個小小工程師的心情抒發天地

最近一樣很忙，忙到亂七八糟，應該是說，

最近來的需求都是要那種幾天內或非常即時性的任務，

所以就很沒時間來寫寫Blog。

最近有收到信，希望能在教學裡面，能夠更詳細點，

好吧.... 我只能說我盡量，寫在註釋裡面，

但畢竟我不是專業寫手，所以，如果有錯誤的地方，在麻煩各位指出囉。

Step1. 首先，我們先將UI拉好

然後將Make Dir & Delete 都給予slot

Button→Right Click→Go to slot→Clicked()

// 這邊應該非常簡單，我就快速帶過了

Step2. DirMod.pro 

Added " QT += widgets "

Step3. dialog.h

1. Add include 

2. you will see the slots : 

void on_pushbutton_clicked();  and void on_pushButton_2_clicked();

3. Added "QDirModel*model";

Step4. dialog.cpp

You will see, very easy to show your computer information.

Dialog::Dialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::Dialog)
{
    ui->setupUi(this);

    // Step1.
    // First thing we actually need to do is create and populate our model and to do that.
    model = new QDirModel(this);
    model->setReadOnly(false);


    // Step2.
    // that's do the sorting first!
    // 1. Directories to be listed first
    // 2. ignore the case and sort by name
    model->setSorting(QDir::DirsFirst | QDir::IgnoreCase | QDir::Name);


    // Step3.
    // Set model to tree view !
    // ( This is my habit, i like write tree view, not treeView )
    ui->treeView->setModel(model);


    // Step4.
    // Set some style
    // 1. set index.
    QModelIndex index = model->index("E:/");
    // 2. we're getting the index of the E Drive and we're going to actually find at the tree view
    // and expand it.
    ui->treeView->expand(index);
    // 3. and we want to scroll the view down to it that way.
    ui->treeView->scrollTo(index);
    // 4. and we want to actually select it.
    ui->treeView->setCurrentIndex(index);
    // 5. and last we want to resize the column to the contents and
    // we just wnat the name or the first column.
    ui->treeView->resizeColumnToContents(0);
}

and then we added some function to button.

void Dialog::on_pushButton_clicked()

{

    // Make dir

    QModelIndex index = ui->treeView->currentIndex();

    if (!index.isValid()){

        return;

    }

    QString name=  QInputDialog::getText(this,"Name","Enter a name");

    if (name.isEmpty()){

        return;

    }

    model->mkdir(index,name);

}

void Dialog::on_pushButton_2_clicked()

{

    // Delete

    QModelIndex index = ui->treeView->currentIndex();

    if (!index.isValid()){

        return;

    }

    if (model->fileInfo(index).isDir())

    {

        // Dir

        model->rmdir(index);

    }

    else

    {

        // File

        model->remove(index);

    }

}

That's all. 

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結語 :

其實這篇我寫的比其他篇都來的久，

往後的教學文章我的風格也會盡量的將解釋寫在註釋裡面，

至於這玩意的心得感想呢.............. 

我還是覺得，Qt實在很強大，哈哈哈哈.... 對於寫MFC很久的人來說，

簡直就是跪者寫完的，

好了，大概就是這樣，五月了，有一堆事情要幹，

這個月份可能文章的產量會降低許多，但我還是會維持一定的品質的 !!!

請各位看官鞭我的時候小力點，

謝謝。