<DllImport("user32.dll")> _
Friend Shared Function WindowFromPoint(ByVal Point As System.Drawning.Point) As IntPtr
End Function
If I execute the Code Analysis I obtain this warning (The text is translated from italian, probably in the english language should be a bit different)
Warning 13 CA1901: Microsoft.Portability: According to the code statement, the parameter 'Point' of P / Invoke 'NativeMethods.WindowFromPoint (Point)' will be 8 bytes on 32-bit platforms. This is incorrect since the actual declaration native API indicating that it should be 4 bytes on 32-bit platforms. Consult the documentation MSDN Platform SDK to determine the type of data to be used in place of 'Point'
Now, since the structure System.Drawning.Point consists of two Int32 (4 bit) Integer: [URL]
I don't understand why this warning.
WindowFromPoint is normally used with the position of the cursor, Cursor.Position, which is a System.Drawning.Point.... Dim Hwnd as IntPtr = WindowFromPoint(Cursor.Position)
I have just finished college and I am awaiting my exam date. I have created some desktop applications for my portfolio, but now I want to create a Point of Sales (POS) system to add to the list.I notice in supermarkets and various shops that POS systems use touch screen monitors to interact with the program.My first question is, do I need to use different code or controls in my applications so they can be used with touch screen monitors.I have created an application for hotels for booking rooms (not for a client, just as a demo project), but if there is anyone out there who could give me some pointers on how to create the POS system.I will be doing some research and I will start designing some controls over the next few days. I am looking forward to getting this project started.
i'm an IT student working on a project(point of sale) but i'm unable to display the price of the item, weight and name into a textbox from an access database and to insert multiple barcode items in order to get the subtotal.
I hve been working with points a lot recently, and I have been wondering if there is a way to set a point without setting point.x and point.y separately. For example for (3, 5): Point1 = (3, 5) But that isn't right
I have a chat/server system and when the text gets to a point were the scrollbar becomes active it dosnt go to the bottom it goes to the top. So say I was at the bottom of everyones text and than I write somthing it will shot me back to the top. My code is:TextBox1.Text &= vbCrLf & readData
Dim pt As Point, is the problem here, i know that this class point can belong to the types Inventor or System drawing.I want to make it part of the System drawing, how i do this ?
I have a Diagonal line drawn on a picture box on my forum and i need to know if the user has clicked the line I have the Start point and End Point of the Line and the mouse x,y location So i basically need to find out if the x,y of the mouse is on the line.
I'm trying to extract a piece of text from within the string, defining both a starting point and an ending point. For instance, say I want to search for the text found between "That is a " and " car" in the string "That is a red car", so it would return "red".I know you can use .SelectionStart and SelectionLength, but the length of the word can change, so the selection length can vary. What I want is to establish a specific starting point and a specific ending point from which to extract the text from the string.
i have a picturebox which displays a map i have 2 modes add point and delete point when the user clicks the picture it creates a point on the picture where the user has clicked that works perfectly its when i try and delete the point when it doesent work :/ i have all the points loading from an xml file this is the code i have:
[Code]...
basicly i want it to when the user clicks the point it fines the x any y in the xml delete the node then delete all the points on the map then reload them all according to the xml
I'm trying to calculate the direction between two points on a two-dimensional grid. Actually I want to determine if that vector is within a range of two values. Suppose the grid's origin is 0,0 at the upper left corner, and 0 degrees represents north. I have a point A on that grid. I want to know if a line from point A to point B on the grid is within a range of directions between 111.8 degrees (a little south of east) and 158.2 (a little east of south). Those are approximations; the 111.8 is 90 degrees plus the arctangent of 2/5, and 158.2 is 180 minus that value. I worked out a series of calculations worthy of a medieval astronomer, but I suspect there is a simpler way. I'm going to have to do this for a variety of other vectors, and I'd like to generalize
I know how I can construct an icon setting point by point, but that isn't what I want. I want to use a bitmap file or a jpeg -is easy to convert an jpeg to an bitmap- and built an icon that looks like this picture.
I want to make a drawing application which needs a few drawing functions I cant handle myself as im not very mathematicly inclined The first on the list of functions is to create an arc from a start point, end point and radius. The method signature is as followes.
Function CreateArc(byval StartPoint as PointF, EndPoint as PointF, Raduis as single) As PointF() 'Code to create an array of points...
I have a DataGridView that will occasionally have a RowError icon displayed in the RowHeader (shown below)I have code that displays a small form when the users mouse moves over the row header or clicks the row header.I would like to draw aline from the top-left of the form to the middle-right of the row header.I basically want to point from the form to the error icon.
I need to move an ellipse from a known point on the screen to another known point on the screen.
I've tried using For.....Loops with less than desired results.
I can't remember everything I've tried, a lot of trial and error has been layed to waste. Lol
I've ended up with this code after putting together what I've tried, what I've learned elsewhere, and a couple of posts I've read on here.
All I want to do is move the ellipse from one point to the other along a straight line that forms the angle between the two points (X1,Y1) and (X2,Y2), make it grow from 2 pixels at it's start, to about 80 pixels by the time it reaches half way, then shrink from 80 pixels back down to 2 pixels by the time it reaches the point (X2,Y2).
Easier said than done.
Here's what I have at the present.....
Dim W As Integer Dim H As Integer Dim Num As Integer
[Code].....
....This seems like such a simple task, yet it's been a week since I came up with the idea, and I've had little success.
i want to work on a shooting game,and i already have a code for the rotation of the image but i have a few problemFirst problem(for the tank /ship): i want the image to AUTOMATICALLY rotate facing the mouse cursor,i know how to rotate but but i dont know how to convert the location of the mouse to an angle that the image will face,,
I am getting following error whenever I want to use IIf function inside entity framework query.
LINQ to Entities does not recognize the method 'System.Object IIf(Boolean, System.Object, System.Object)' method, and this method cannot be translated into a store expression.
Most conversion tools will still use VB6 syntax And so don't many people coming to .NET from VB6 - drives me nuts.Rewrite your program from scratch using all .NET syntax and not legacy VB6 syntax still supported in the .NET world.
I have studied VB 6.0 but have hardly any knowledge of .NET. Can someone please tell me the difference between the three versions namely VB6.0, VB 2010 express and VB.NET?
im using visual basic 2010 express and im wanting to know how i can display the CPU usage (over all CPU usage like you would find on the task manager), the RAM usage, the temperature, and the frames per second all in separate list boxes.I have searched around on the internet for a long time looking for the code's to do this, none seem to be compatible with the 2010 express version.
Im creating a program that shows the CPU usage (already have the code for the CPU usage) frames per second etc, what im needing is the code snippet fordisplayinghe current FPS in a list box, but i also want the FPS to automatically refresh once a second
