Develop Reference

How to change the size of the image and change the size of the rectangle that was drawn inside the picture box on a specific part of the image in C #

How to change the size of the image and the size of the rectangle that was drawn inside the image so that the rectangle does not lose the position of the x and the y.
I did the following code, but it doesn't keep the position of the rectangle
int index3 = dataGridView1.CurrentCell.RowIndex;
xxx = Convert.ToInt32(dataGridView1.Rows[index3].Cells[10].Value.ToString());
yyy = Convert.ToInt32(dataGridView1.Rows[index3].Cells[11].Value.ToString());
hhh = Convert.ToInt32(dataGridView1.Rows[index3].Cells[12].Value.ToString());
www = Convert.ToInt32(dataGridView1.Rows[index3].Cells[13].Value.ToString());
Rectangle r = new Rectangle(xxx, yyy, www, hhh);
int newX = (int)(xxx+ (xxx*0.2));
int newY = (int)(yyy +( yyy*0.2));
int newWidth = (int)(r.Width +(r.Width*0.2));
int newHeight = (int)(r.Height +(r.Height*0.2));
picturModule.Size = new Size((int)(picturModule.Width+(picturModule.Width*0.2)),(int)(picturModule.Height+(picturModule.Height*0.2)));
r = new Rectangle(newX, newY, newWidth, newHeight);
Pen pen = new Pen(Color.GreenYellow, 4);
picturModule.CreateGraphics().DrawRectangle(pen, r);

The problem is when changing the size of the image after drawing the
rectangle on the image, the rectangle is not moved to the correct X
and Y point and its position changes. I want when changing the size of
the image that the size of the rectangle changes and keeps the same
point from which you started
Okay. What you can do is store the position and size of the Rectangle as a "percentage" of the width/height of the image/picturebox. This could be done using RectangleF and floating point values.
Now you can use those "percentage" values and multiply them by the new picturebox width/height to get the scaled location and size.
Here's an example:
Code that generated the animation:
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
private bool drawRect = false;
private RectangleF rcF;
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
if (drawRect)
{
Point pt = new Point((int)(rcF.X * pictureBox1.Width),
(int)(rcF.Y * pictureBox1.Height));
Size sz = new Size((int)(rcF.Width * pictureBox1.Width),
(int)(rcF.Height * pictureBox1.Height));
e.Graphics.DrawRectangle(Pens.Black, new Rectangle(pt, sz));
}
}
private void button1_Click(object sender, EventArgs e)
{
Rectangle initialRectangle = new Rectangle(new Point(300, 150), new Size(125, 50));
PointF ptF = new PointF((float)initialRectangle.X / pictureBox1.Width,
(float)initialRectangle.Y / pictureBox1.Height);
SizeF szF = new SizeF((float)initialRectangle.Width / pictureBox1.Width,
(float)initialRectangle.Height / pictureBox1.Height);
rcF = new RectangleF(ptF, szF);
drawRect = true;
pictureBox1.Invalidate();
}
private void pictureBox1_SizeChanged(object sender, EventArgs e)
{
pictureBox1.Invalidate();
}
}

How to Print full width window form C#.?

I am trying to Print the complete form but It print document is not covering full width. I have tried different ways, But didn't get the desired result.
I have taken help from this link
https://learn.microsoft.com/en-us/dotnet/framework/winforms/advanced/how-to-print-a-windows-form
This is the half print which I am getting
Here is the complete form which I want to print
Please tell me how I can get complete form printed.
Thanks in advance

I am not sure about the link you are following, I was getting same error even after trying multiple codes while I was trying to print whole form once. Then I found below code somewhere on internet, which prints whole form.
private System.IO.Stream streamToPrint;
string streamType;
PrintDocument printDoc = new PrintDocument();
[System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")]
private static extern bool BitBlt
(
IntPtr hdcDest, // handle to destination DC
int nXDest, // x-coord of destination upper-left corner
int nYDest, // y-coord of destination upper-left corner
int nWidth, // width of destination rectangle
int nHeight, // height of destination rectangle
IntPtr hdcSrc, // handle to source DC
int nXSrc, // x-coordinate of source upper-left corner
int nYSrc, // y-coordinate of source upper-left corner
System.Int32 dwRop // raster operation code
);
private void printDoc_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
System.Drawing.Image image = System.Drawing.Image.FromStream(this.streamToPrint);
int x = e.MarginBounds.X;
int y = e.MarginBounds.Y;
int width = image.Width;
int height = image.Height;
if ((width / e.MarginBounds.Width) > (height / e.MarginBounds.Height))
{
width = e.MarginBounds.Width;
height = image.Height * e.MarginBounds.Width / image.Width;
}
else
{
height = e.MarginBounds.Height;
width = image.Width * e.MarginBounds.Height / image.Height;
}
System.Drawing.Rectangle destRect = new System.Drawing.Rectangle(x, y, width, height);
e.Graphics.DrawImage(image, destRect, 0, 0, image.Width, image.Height, System.Drawing.GraphicsUnit.Pixel);
}
private void btnPrintDoc_Click(object sender, EventArgs e)
{
Graphics g1 = this.CreateGraphics();
System.Drawing.Image MyImage = new Bitmap(this.ClientRectangle.Width, this.ClientRectangle.Height, g1);
Graphics g2 = Graphics.FromImage(MyImage);
IntPtr dc1 = g1.GetHdc();
IntPtr dc2 = g2.GetHdc();
BitBlt(dc2, 0, 0, this.ClientRectangle.Width, this.ClientRectangle.Height, dc1, 0, 0, 13369376);
g1.ReleaseHdc(dc1);
g2.ReleaseHdc(dc2);
MyImage.Save(#"D:\PrintPage.jpg", ImageFormat.Jpeg);
FileStream fileStream = new FileStream(#"D:\PrintPage.jpg", FileMode.Open, FileAccess.Read);
StartPrint(fileStream, "Image");
fileStream.Close();
}
public void StartPrint(Stream streamToPrint, string streamType)
{
this.printDoc.PrintPage += new PrintPageEventHandler(printDoc_PrintPage);
this.streamToPrint = streamToPrint;
this.streamType = streamType;
System.Windows.Forms.PrintDialog PrintDialog1 = new PrintDialog();
PrintDialog1.AllowSomePages = true;
PrintDialog1.ShowHelp = true;
PrintDialog1.Document = printDoc;
DialogResult result = PrintDialog1.ShowDialog();
if (result == DialogResult.OK)
{
printDoc.Print();
//docToPrint.Print();
}
}

If you want to fix size When Form starts you can try this, my friend. Or When you click the print button, some controls are added to your form you can only just call the SizeFix function end of your print button click event function instead of creating load event.
public Form1()
{
InitializeComponent();
this.Load += new EventHandler(SizeFix);
}
public void SizeFix(object o, EventArgs e)
{
int widthMax = this.Width;
foreach (var item in this.Controls)
{
int tempWitdh = (item as Control).Location.X + (item as Control).Width;
if (tempWitdh > widthMax)
{
widthMax = tempWitdh;
}
}
this.Width = widthMax; // You can add 10 width more
}

Print form in Windows application

Im trying to get a button to print out my current form and have tried all the code I can find on here but it keeps printing blank pages and I cant work out why.
The code I use is as follows
Bitmap bitmap;
private void btnPrint_Click(object sender, EventArgs e)
{
//Add a Panel control.
Panel panel = new Panel();
this.Controls.Add(panel);
//Create a Bitmap of size same as that of the Form.
Graphics grp = panel.CreateGraphics();
Size formSize = this.ClientSize;
bitmap = new Bitmap(formSize.Width, formSize.Height, grp);
grp = Graphics.FromImage(bitmap);
//Copy screen area that that the Panel covers.
Point panelLocation = PointToScreen(panel.Location);
grp.CopyFromScreen(panelLocation.X, panelLocation.Y, 0, 0, formSize);
//Show the Print Preview Dialog.
printPreviewDialog1.Document = printDocument1;
printPreviewDialog1.PrintPreviewControl.Zoom = 1;
printPreviewDialog1.ShowDialog();
}
private void PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
//Print the contents.
e.Graphics.DrawImage(bitmap, 0, 0);
}
This runs from a button (btnPrint) which is on a form (Form2) along with loads of textboxes and graphics)
When clicked it brings up the print preview dialog fine but the page is blank. If I press print it prints a blank page.
Any idea why its not copying the form??

Please refer: How to: Print Preview a Form
[System.Runtime.InteropServices.DllImport("gdi32.dll")]
public static extern long BitBlt (IntPtr hdcDest,
int nXDest, int nYDest, int nWidth, int nHeight,
IntPtr hdcSrc, int nXSrc, int nYSrc, int dwRop);
private Bitmap memoryImage;
private void CaptureScreen()
{
Graphics mygraphics = this.CreateGraphics();
Size s = this.Size;
memoryImage = new Bitmap(s.Width, s.Height,
mygraphics);
Graphics memoryGraphics = Graphics.FromImage(
memoryImage);
IntPtr dc1 = mygraphics.GetHdc();
IntPtr dc2 = memoryGraphics.GetHdc();
BitBlt(dc2, 0, 0, this.ClientRectangle.Width,
this.ClientRectangle.Height, dc1, 0, 0,
13369376);
mygraphics.ReleaseHdc(dc1);
memoryGraphics.ReleaseHdc(dc2);
}
private void printDocument1_PrintPage(System.Object
sender, System.Drawing.Printing.PrintPageEventArgs e)
{
e.Graphics.DrawImage(memoryImage, 0, 0);
}
private void printButton_Click(System.Object sender,
System.EventArgs e)
{
CaptureScreen();
printPreviewDialog1.Document = printDocument1;
printPreviewDialog1.Show();
}

How to print panel in windows form?

I Have windows form but i want to print panel in windows form to hidden print button and it's my code :
private void printDoc_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
System.Drawing.Image image = System.Drawing.Image.FromStream(this.streamToPrint);
int x = e.MarginBounds.X;
int y = e.MarginBounds.Y;
int width = image.Width;
int height = image.Height;
if ((width / e.MarginBounds.Width) > (height / e.MarginBounds.Height))
{
width = e.MarginBounds.Width;
height = image.Height * e.MarginBounds.Width / image.Width;
}
else
{
height = e.MarginBounds.Height;
width = image.Width * e.MarginBounds.Height / image.Height;
}
System.Drawing.Rectangle destRect = new System.Drawing.Rectangle(x, y, width, height);
e.Graphics.DrawImage(image, destRect, 0, 0, image.Width, image.Height, System.Drawing.GraphicsUnit.Pixel);
}
public void StartPrint(Stream streamToPrint, string streamType)
{
this.printDoc.PrintPage += new PrintPageEventHandler(printDoc_PrintPage);
this.streamToPrint = streamToPrint;
this.streamType = streamType;
System.Windows.Forms.PrintDialog PrintDialog1 = new PrintDialog();
PrintDialog1.AllowSomePages = true;
PrintDialog1.ShowHelp = true;
PrintDialog1.Document = printDoc;
DialogResult result = PrintDialog1.ShowDialog();
if (result == DialogResult.OK)
{
printDoc.Print();
//docToPrint.Print();
}
}
private void button_Print_Certificate_Click(object sender, EventArgs e)
{
Graphics g1 = this.CreateGraphics();
Image MyImage = new Bitmap(this.ClientRectangle.Width, this.ClientRectangle.Height, g1);
Graphics g2 = Graphics.FromImage(MyImage);
IntPtr dc1 = g1.GetHdc();
IntPtr dc2 = g2.GetHdc();
BitBlt(dc2, 0, 0, this.ClientRectangle.Width, this.ClientRectangle.Height, dc1, 0, 0, 13369376);
g1.ReleaseHdc(dc1);
g2.ReleaseHdc(dc2);
MyImage.Save(#"D:\PrintPage.jpg", ImageFormat.Jpeg);
FileStream fileStream = new FileStream(#"D:\PrintPage.jpg", FileMode.Open, FileAccess.Read);
StartPrint(fileStream, "Image");
fileStream.Close();
if (System.IO.File.Exists(#"D:\PrintPage.jpg"))
{
System.IO.File.Delete(#"D:\PrintPage.jpg");
}
}

In order to print a particular control, you'll want to use that control as the source of your BitBlt operation.
So instead of this.CreateGraphics(), call panel.CreateGraphics(). Similarly, use panel.ClientRectangle to get the width and height of the image.
But take a look at https://stackoverflow.com/a/597088/103167 which gives you an easier way.

Drag and Drop move PictureBox- size of image when I'm dragging

I have created a method which move the PictureBox when I Drag and Drop. But when I'm dragging the PictureBox, the image has the real size of image and I wanna that the image has the size of PictureBox
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
picBox = (PictureBox)sender;
var dragImage = (Bitmap)picBox.Image;
IntPtr icon = dragImage.GetHicon();
Cursor.Current = new Cursor(icon);
DoDragDrop(pictureBox1.Image, DragDropEffects.Copy);
DestroyIcon(icon);
}
}
protected override void OnGiveFeedback(GiveFeedbackEventArgs e)
{
e.UseDefaultCursors = false;
}
protected override void OnDragEnter(DragEventArgs e)
{
if (e.Data.GetDataPresent(typeof(Bitmap))) e.Effect = DragDropEffects.Copy;
}
protected override void OnDragDrop(DragEventArgs e)
{
picBox.Location = this.PointToClient(new Point(e.X - picBox.Width / 2, e.Y - picBox.Height / 2));
}
[System.Runtime.InteropServices.DllImport("user32.dll")]
extern static bool DestroyIcon(IntPtr handle);

Use
var dragImage = new Bitmap((Bitmap)picBox.Image, picBox.Size);
instead of
var dragImage = (Bitmap)picBox.Image;
(and maybe call Dispose on the temporary image later, but the GC will deal with it if you don't)

This is because the image in your picture box is the full size image. The picture box just scales it for display purposes but the Image property has the original-sized image.
So, in your MouseDown event handler you want to resize the image before using it.
Rather than:
var dragImage = (Bitmap)picBox.Image;
Try:
var dragImage = ResizeImage(picBox.Image, new Size(picBox.Width, PicBox.Height));
Use something like this method to resize the image for you:
public static Image ResizeImage(Image image, Size size,
bool preserveAspectRatio = true)
{
int newWidth;
int newHeight;
if (preserveAspectRatio)
{
int originalWidth = image.Width;
int originalHeight = image.Height;
float percentWidth = (float)size.Width / (float)originalWidth;
float percentHeight = (float)size.Height / (float)originalHeight;
float percent = percentHeight < percentWidth ? percentHeight : percentWidth;
newWidth = (int)(originalWidth * percent);
newHeight = (int)(originalHeight * percent);
}
else
{
newWidth = size.Width;
newHeight = size.Height;
}
Image newImage = new Bitmap(newWidth, newHeight);
using (Graphics graphicsHandle = Graphics.FromImage(newImage))
{
graphicsHandle.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphicsHandle.DrawImage(image, 0, 0, newWidth, newHeight);
}
return newImage;
}
*Image resize code from here: http://www.codeproject.com/Articles/191424/Resizing-an-Image-On-The-Fly-using-NET