C WinForm [get file path -- traverse folder pictures] - practical exercise 6

1、 Drag to form pictureBox Control and Button Button , Change the corresponding Text And adjust the position

2、 Double click the main form to enter the form loader block

private void Form1_Load(object sender, EventArgs e)
{
    // open windows , Set window size 
    HOperatorSet.SetWindowAttr("background_color", "black");
    HOperatorSet.OpenWindow(0, 0, pictureBox1.Width, pictureBox1.Height, pictureBox1.Handle, "visible", "", out hv_WindowHandle);
    HDevWindowStack.Push(hv_WindowHandle);
    HDevWindowStack.SetActive(hv_WindowHandle);
}

Define handle ：

HTuple hv_WindowHandle = new HTuple();

3、 Double click the get file path button

// Define some variables 
string[] path;
int index = 0;
private void GetPath_btn_Click(object sender, EventArgs e)
{
    // Define that the default path is empty 
    string defaultPath = "";
    // Traverse the folder's pictures 
    FolderBrowserDialog dialog = new FolderBrowserDialog();

    // Description on the open folder browse dialog   
    dialog.Description = " Please select the path of the picture file ";
    // Whether to display the lower left corner of the dialog box   New folder   Button , The default is  true  
    dialog.ShowNewFolderButton = false;

    // Get the file under the file 
    // Press the OK selected button 
    if (dialog.ShowDialog() == DialogResult.OK)
    {
        // Get folder path 
        defaultPath = dialog.SelectedPath;

        // Get all the files in the folder 
        path = Directory.GetFiles(defaultPath, "*.*");

        // Read the picture 
        HOperatorSet.ReadImage(out ho_Image, path[index]);
    }

     // For the first time defaultPath It's empty , Press FolderBrowserDialog default setting （ Desktop ） choice 
     if (defaultPath != "")
     {
       // Set the default directory this time to the last selected directory 
       dialog.SelectedPath = defaultPath;
     }
     // Get the width and height of the image 
     // Get the size of the picture 
     HOperatorSet.GetImageSize(ho_Image, out hv_Width, out hv_Height);

     // Adaptation window 
     if (HDevWindowStack.IsOpen())
     {
         HOperatorSet.SetPart(hv_WindowHandle, 0, 0, hv_Height, hv_Width);
     }

     // display picture 
     if (HDevWindowStack.IsOpen())
     {
         HOperatorSet.DispObj(ho_Image, hv_WindowHandle);
     }

     // The current status is displayed on the status bar 
     toolStripStatusLabel.Text = " Get file path succeeded ";
}

4、 Double click the get picture button

// Traverse images 
private void Ergodic_btn_Click(object sender, EventArgs e)
{
    // Read the picture 
    HOperatorSet.ReadImage(out ho_Image, path[index]);
    // Get the size of the picture 
    HOperatorSet.GetImageSize(ho_Image, out hv_Width, out hv_Height);
    // Adaptation window 
    if (HDevWindowStack.IsOpen())
    {
        HOperatorSet.SetPart(hv_WindowHandle, 0, 0, hv_Height, hv_Width);
    }
    // display picture 
    if (HDevWindowStack.IsOpen())
    {
    HOperatorSet.DispObj(ho_Image, hv_WindowHandle);
    }
                
    // Total number of pictures to be detected 
    toolStripStatusLabel2.Text = path.Length.ToString();
    
    // Current number of pictures 
    toolStripStatusLabel4.Text = (index + 1).ToString();
   
    this.index++;
    // Determine whether the array index is exceeded 
    if (index > path.Length - 1)
    {
        index = 0;
    }
    toolStripStatusLabel.Text = " Traversal of pictures succeeded ";
}

5、 Run the program