WPF does not use decimal as far as I know for any internal values. Many times have to be careful about even using double since there are other properties that are used, like Size or Thickness.

WPF

rectangle

Binding

How to crop (make a rectangular hole in) a panel in C#

31 Aug 2017 by RickZeeland

In addition to the nice article mentioned by Graeme (which deserves points really) Making Transparent Controls - No Flickering[^] , the following: If you want to "punch a hole", this article might be of interest: Phil Wright : Component Factory: .NET2, Transparent controls[^] Also using...

Dividing Up A Rectangle Based on Pairs of Points using C#

18 Feb 2013 by Richard James Moss

This article describes how to break up a rectangle into smaller parts based on user defined co-ordinates.

how to use Rect Class?

27 Apr 2013 by Autumn_Gao

thank you all, i have solved it myself, just one simple mistake. i forgot to import namespace Gdiplus, when addusing namespace Gdiplus, problem solved

How can I draw rect on oninitdialog in MFC VC++?

3 Aug 2018 by Richard MacCutchan

If you draw objects outside of the function that responds to the WM_PAINT message, then it will not work. As soon as the dialog is shown it will erase the background and redraw all controls in the resource. You should add the rectangle into your resource settings.

Hi, I start to learn draw shape with gdiplus, but how do I delete shape from canvas ?

23 May 2019 by Richard MacCutchan

You should do all your painting/drawing to the screen in the function that handles the WM_PAINT message. Each time this function is called it should redraw all the shapes. When a shape is deleted you just remove it from the list of items to draw, and then call InvalidateRect to force a repaint...

Write a program to determine whether two rectangles are of identical dimensions?

18 Sep 2022 by Richard MacCutchan

Quote: It is really at the expense of my grade. In that case it is important that you do the work, so that your grade is based on your skill set and not someone else's.

Python

rectangle

Write a program to determine whether two rectangles are of identical dimensions?

18 Sep 2022 by OriginalGriff

While we are more than willing to help those that are stuck, that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for...

Python

rectangle

Bind two shapes in different datagrids in WPF

N 20 May 2024 by Jo_vb.net

Binding DG1 to DG2 makes no sense. Use ResourceDictionary ResourceDictionary and XAML resource references - Windows apps | Microsoft Learn[^] or create a DataGrid Usercontrol as template for your DataGrids.

draw rectangle and undo

2 Mar 2013 by qasimqadri

this is my below code which draw rectangle and eclipse on mouse event..i try search undo alots.but fail to undo mycode..i want dat wen i click on button then last rectangle remove from drawing.pls dnt give me link.modify my code coz am not very much experience on graphics.simply click button...

rectangle

draw rectangle and undo

2 Mar 2013 by OriginalGriff

Since you add your objects to a list (or two) here is how I would do it.1) Create an abstract MyShape class, and derive a MyRectangle and MyOval from it. Probably, each should provide code to draw themselves, given an appropriate Graphics object2) Replace my two lists with a single MyShape...

rectangle

how to add the same picture for every rectangle (area) generated randomly

28 Mar 2013 by kastriotlimani

Hi, i am a beginner at coding, and i am making a little game where a character is capturing some dots generated randomly.Now i need each dot to be an image (same image for all), but i cant find out how to do it.This is a piece of what I did:Rectangle[] rects;rects = new...

ADD Circle,Line,Rectangle and Ellipse options in my minipaint app with C#

16 Jun 2013 by Mohamed Sayed

i need your help for adding Rectangle,Circle and Ellipse options to my mini-paint app project,but i need all this on mouse event, i searched every where but most of sites give specific dimensions so I'm failed to get rectangle option to work :(i add save option to save the drawn pic to bmp...

rectangle

drawing

MultiBinding returns a value but the value is not set in the width property

14 Aug 2013 by Shahare

It appears I just had to turn the binding property and the converter to double instead of decimal.

WPF

rectangle

Binding

Drawing rectangle on picturebox - how to limit area of rectangle?

27 Feb 2014 by DROB08

I have been trying to calculate the right side of my rectangle so that it avoids mouse going over a specific area within a picture box. This works fine when zoom factor is on, after zoom is increased right side becomes smaller than the Picturebox's width hence I can not move the mouse over the...

rectangle

picturebox

How to find the given rectangle co-ordinqtes are overlapped and how to group it together as one if ?

13 Jun 2014 by Pixel86

How to find the given rectangle co-ordinates are overlapped ?How to group it together one if rectangles are overlapped?Here given example Exmaple:Format - Rect.x , Rect.y Rect.Width , Rect.HeightvectorboundRect(8);boundRect[0].x = 260; boundRect[0].y = 77; ...

How to find the given rectangle co-ordinqtes are overlapped and how to group it together as one if ?

13 May 2014 by CPallini

Finding if two rectangles overlap is not that dramatically difficult, namely if (((r0.x0 r1.x0) || ( r1.x0 r0.x0 )) && (r0.y0 r1.y0) || ( r1.y0 r0.y0 ))) { // overlap }You may use >= and

How to find the given rectangle co-ordinqtes are overlapped and how to group it together as one if ?

13 May 2014 by Richard MacCutchan

You would need to write a function that does the comparisons, and returns a true or false result. If you are using Windows then you can make use of the IntersectRect function[^]

HOw to draw boundingBox/rectangle transperent over an image

10 Oct 2014 by loraloper_22

hii have four coordinates which correspond to (x,y,width,height) . I can draw a rectangle over an image from this script but it is a filled rectangle with redcolor i want a a bounding box or a transparent rectangle I=imread('000027.jpg');figure,imshow(I)hold...

rectangle

image-processing

MatLab

HOw to draw boundingBox/rectangle transperent over an image

10 Oct 2014 by loraloper_22

I=imread('000027.jpg');imsho...

rectangle

image-processing

MatLab

How can I add a rectangle to a FlowLayoutPanel

24 Mar 2015 by Member 10455358

I have been trying and trying to add a filled rectangle to a FlowLayoutPanel so that its behind the buttons im creating in the FlowLayoutPanel via a loop. But I cant get it to work. The program creates 1 button at a time from an access database. I need it to draw a rectangle behind the button it...

rectangle

How can I add a rectangle to a FlowLayoutPanel

24 Mar 2015 by Sergey Alexandrovich Kryukov

"Filled rectangle" is not a control. Simply wrap it in a control. Create a custom control and render whatever you want on it. (Alternatively, use PictureBox with image showing a rectangle. Don't do it if you image is supposed to be dynamic, in any sense.) Please see my past answers:Append a...

rectangle

How can I add a rectangle to a FlowLayoutPanel

25 Mar 2015 by Member 10455358

Thanks for your input - I have tried the picturebox and it half works but it puts the buttons beside the picturebox and it needs to be over it so that the picturebox becomes the background for the button. This is needed to allow me to load transparent background images into the button while...

rectangle

How do I fill a drawn rectangle on a panel in C#?

6 Jun 2015 by DrgIonuţ

I have a server-client application, but my task now is to fill a square of a rectangle when I click it. How can I do this?using System;using System.Windows.Forms;using System.Text;using System.Net.Sockets;using System.Threading;using System.IO;using System.Collections;using...

rectangle

color

How do I fill a drawn rectangle on a panel in C#?

5 Jun 2015 by Sergey Alexandrovich Kryukov

Your problem is not filling something which was previously drawn with the lines. As I can see, you know how to use FillRectangle. Your problem is different. I can see the fragments of code where you do drawing on click or some other events. The problem is: what you draw this way is not backed...

rectangle

color

How do I fill a drawn rectangle on a panel in C#?

7 Jun 2015 by Ralf Meier

This sample-code will show you what I have described :Writing your Custom Control: step by step[^]

rectangle

color

WPF: Get name of clicked rectangle in ViewModel

25 Jun 2015 by ParniM

Hi everybody,I just want to get a clicked element name in the ViewModel code.Basically, I generate several rectangles programmatically ...

Moving rectangles at run time

14 Dec 2016 by Sruthi Suresh

AM drawing multiple rectangles in my windows form and is saved to a rectangle list at run time.how do i move these rectangles with mouse and then save it to the rectangle list at run time so that the user can place these rectangles as they wishWhat I have tried:i tried to locate the...

rectangle

drawing

Moving rectangles at run time

14 Dec 2016 by CPallini

"It didn't worked" is not pretty informative. Please elaborate.Anyway, I suppose you are missing a conversion from Screen to Client coordinates (or the opposite). Have a loook at Mouse Events in Windows Forms[^] and at Control.PointToClient Method (Point) (System.Windows.Forms)[^] (for sample...

rectangle

drawing

Moving rectangles at run time

14 Dec 2016 by Ralf Meier

to complete the Solution from CPallini a Little bit :If you do a MouseDown on your Form you have to look it the actual MousePosition is at a coordinate-range of one of your rectangles.If Yes you should memorize the actual MousePosition relative to the Rectangle-Postion.If you now move...

rectangle

drawing

How to crop (make a rectangular hole in) a panel in C#

1 Sep 2017 by newbie1992

hello morning everyone anyone know how to crop (make a rectangular hole in) a control? i try to crop a square in the middle of the panel for an example if the size of my panel was Panel myPanel = new Panel() { Size = new Size(300, 800), Location = new Point(0,0); BackColor =...

How to crop (make a rectangular hole in) a panel in C#

3 Sep 2017 by BillWoodruff

using System.Drawing; using System.Windows.Forms; namespace PathStuff { public static class PathExtensions { public static void MakeHole(this Control cntrl, Rectangle xrect) { var region = new Region(cntrl.ClientRectangle); region.Exclude(xrect);...

What is the complete code for to draw a simple rectangle on the screen ? ... I am a starting to learn C# ...

14 Dec 2017 by CPallini

Such code works, actually. Create an empty Windows Form project, add the on paint event handler and modify it this way: private void Form1_Paint(object sender, PaintEventArgs e) { DrawRectangleRectangle(e); }

rectangle

How can I draw rect on oninitdialog in MFC VC++?

3 Aug 2018 by Member 12533122

Hello people. I am drawing rect in my application on button click. but i want draw it on start of application. as i am drawing on OninitDialog function it will not drawing anything on it. so how can i draw it on starting application? What I have tried: void XYZ::OnBnClickedOk() { CRect rc;...

How can I draw rect on oninitdialog in MFC VC++?

3 Aug 2018 by KarstenK

Another solution is to use PostMessage for a WM_PAINT message which triggers the painting of your control. Best is to use InvalidateRect for the control before. Tip: Create the pens only once, as class members or as static objects to improve performance.

Hi, I start to learn draw shape with gdiplus, but how do I delete shape from canvas ?

23 May 2019 by Member 14430889

Dear All: i am new, i just start to learn draw shape with vs2012 c++ and Gdiplus about 5 weeks, i create a simple project to test, but when i draw polygon finish, i cannot delete any polygon which i selected from canvas, it not so easy like to delete a rectangle or a ellipse, only delete the...

RDLC report in VS 2019 with rectangle contains signature on bottom of last page

22 Jun 2023 by Rasini K

How to position a rectangle control with signature area, on bottom part of last page of rdlc report vVisual studio 2019. What I have tried: I tried to put the rectangle inside the Page footer and gave expression for visibility. If last page,...

rectangle

RDLC

Bind two shapes in different datagrids in WPF

U 20 May 2024 by Sh.H.

Hi people. I have a two DataGrids. Both have a column with Shape of Rectangle, I mean all cells have Rectangle with same attributes. How may I bind the Fill and the Height of Rectangles in DataGrid1 to Rectangles of DataGrid2 in WPF ? Thanks ...

how to use Rect Class?

27 Apr 2013 by Jochen Arndt

You probably wanted to use the CRect class.Note that all MFC class names begin with an uppercase 'C' letter.

How to crop (make a rectangular hole in) a panel in C#

31 Aug 2017 by Graeme_Grant

[moved from comments - thanks for the suggestion RickZeeland] Is the hole suppose to show objects behind it? Like a transparent hole? Something like this: Making Transparent Controls - No Flickering[^][^]???

MultiBinding returns a value but the value is not set in the width property

14 Aug 2013 by Shahare

Hi allI have a piece of code sample which suppose to set the width of the rectangle from a converter. I can see the converter is called twice (the second time with the required value) but the value does not seem to reach the Width property of the rectangle.note: I use rectangle on...

WPF

rectangle

Binding

C# Universal Control Cropping Class

3 Oct 2022 by Dwain Snickles

Add Cropping to any control with image or backgroundimage

ADD Circle,Line,Rectangle and Ellipse options in my minipaint app with C#

17 Jun 2013 by Chris Ross 2

To draw items like rectangles, circles, etc. you need to first think about how you want your user to interact with the program when the are adding a rectangle, etc. For example - mouse down, drag, up might record one corner (mouse down position) and then the opposite corner (mouse up). A circle...

rectangle

drawing

how to add the same picture for every rectangle (area) generated randomly

28 Mar 2013 by johannesnestler

assuming your code is working - just change the scG.FillRectangles to (a looped) call to scg.DrawImage ...

how to use Rect Class?

27 Apr 2013 by Autumn_Gao

i used Rect Class in my MFC project under vs2010 like this: Rect m_rectand include , but still got this error: Error:identifier "Rect" is undifinedis there anyone who can tell me why?

What is the complete code for to draw a simple rectangle on the screen ? ... I am a starting to learn C# ...

14 Dec 2017 by Member 13576087

What should i write to inicialize a program to draw shapes and lines on the screen ? I have tried some code, but it fails. Not working ... (for while, i just can code to make simple things as console input and output/Console.ReadLine, Console.WriteLine ...) Thank you/Regards Carlos What I...

rectangle

Write a program to determine whether two rectangles are of identical dimensions?

18 Sep 2022 by Member 15771187

Identical rectangles We will be writing a program to determine whether two rectangles are of identical dimensions. Looking at the example above, you can see that the rectangles do indeed seem to be identical. We can check this better if we have...

Python

rectangle