[HELP] Draw direct to screen.
[HELP] Draw direct to screen.
Well I'm stuck,
I've been googling. experimenting, inventing and nothing has worked so far.
What I'm attempting to do, is draw directly to screen display. I get the feeling this could be impossible so my first question is, "Is this possible or not?". If so, my second question is "How?"
I've been trying for a while, attempting to create a device context for the screen display. But I don't know if this is even the right approach to go for. Here's what I've been working with atm.
[php]
Imports System.Runtime****teropServices
Public Class Form1
Dim ScreenDC As IntPtr
<DllImport("Gdi32.dll")> _
Public Shared Function CreateDC(ByVal driverName As String, ByVal deviceName As String, ByVal output As String, ByVal lpInitData As IntPtr) As IntPtr
End Function
<DllImport("Gdi32.dll")> _
Public Shared Function DeleteDC(ByVal dc As IntPtr) As Boolean
End Function
Dim sWidth = Screen.PrimaryScreen.Bounds.Width
Dim sHeight = Screen.PrimaryScreen.Bounds.Height
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
ScreenDC = CreateDC("DISPLAY", Nothing, Nothing, CType(Nothing, IntPtr))
Dim mg As Graphics = Graphics.FromHdc(ScreenDC)
Dim rPen As New Pen(Color.Red, 1)
mg.DrawLine(rPen, sWidth, (sHeight - 25), sWidth, (sHeight + 25))
mg.DrawLine(rPen, (sWidth - 25), sHeight, (sWidth + 25), sHeight)
End Sub
Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
DeleteDC(ScreenDC)
End Sub
End Class
[/php]
I've been trying to adapt snippets i've used for various other projects I've made over time and somehow get this to work. (i.e the ScreenDC was something I used for a ScreenScanner a while back)
At the moment I'm trying to draw pretty much a crosshair on the screen, nothing happens however when I press Button1. I wasn't fully expecting this code to work, but I'm out of ideas.
Anyone got an idea of how to go about this?
Cheers,
J-Deezy.
I've been googling. experimenting, inventing and nothing has worked so far.
What I'm attempting to do, is draw directly to screen display. I get the feeling this could be impossible so my first question is, "Is this possible or not?". If so, my second question is "How?"
I've been trying for a while, attempting to create a device context for the screen display. But I don't know if this is even the right approach to go for. Here's what I've been working with atm.
[php]
Imports System.Runtime****teropServices
Public Class Form1
Dim ScreenDC As IntPtr
<DllImport("Gdi32.dll")> _
Public Shared Function CreateDC(ByVal driverName As String, ByVal deviceName As String, ByVal output As String, ByVal lpInitData As IntPtr) As IntPtr
End Function
<DllImport("Gdi32.dll")> _
Public Shared Function DeleteDC(ByVal dc As IntPtr) As Boolean
End Function
Dim sWidth = Screen.PrimaryScreen.Bounds.Width
Dim sHeight = Screen.PrimaryScreen.Bounds.Height
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
ScreenDC = CreateDC("DISPLAY", Nothing, Nothing, CType(Nothing, IntPtr))
Dim mg As Graphics = Graphics.FromHdc(ScreenDC)
Dim rPen As New Pen(Color.Red, 1)
mg.DrawLine(rPen, sWidth, (sHeight - 25), sWidth, (sHeight + 25))
mg.DrawLine(rPen, (sWidth - 25), sHeight, (sWidth + 25), sHeight)
End Sub
Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
DeleteDC(ScreenDC)
End Sub
End Class
[/php]
I've been trying to adapt snippets i've used for various other projects I've made over time and somehow get this to work. (i.e the ScreenDC was something I used for a ScreenScanner a while back)
At the moment I'm trying to draw pretty much a crosshair on the screen, nothing happens however when I press Button1. I wasn't fully expecting this code to work, but I'm out of ideas.
Anyone got an idea of how to go about this?
Cheers,
J-Deezy.
Well it possible... I remember i did it, i got the source from Zoom so.. Ask him 
make a transparent forum
/
just an idea
/
just an ideaThat is a good idea ^
Make a transparent full screen form and just draw on that..
Make a transparent full screen form and just draw on that..
Originally Posted by Golden.
That is a good idea ^
Make a transparent full screen form and just draw on that..
Make a transparent full screen form and just draw on that..
Ontopic: I can draw direct to the DirectX Game by obtaining the window handle and then drawing to the window handle, however the game renders frames too fast and seeing as I haven't hooked anything my crosshair just flickers hell bad. So either I need to draw direct to screen display or figure out how to hook to Endscene with VB
He needs it to be working in DirectX Game...
Drawing direct to screen can cause Flicker? Use double buffer? /
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