UC知道vn.net 输出问题
来源：百度知道 编辑：UC知道 时间：2024/06/10 21:33:10
以下是我的代码：
Public Class Form1
Declare Auto Function GetDC Lib "user32.dll" (ByVal hwnd As Integer) As IntPtr
Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
Dim p As System.IntPtr = GetDC(0)
Dim png As New Bitmap("e:\bg.png")
Dim g As Graphics = Graphics.FromHdc(p)
g.DrawImage(png, 1000, 100, png.Width, png.Height)
End Sub
End Class
但为什么输出后图片闪一下消失，或象花屏一样的
感谢楼下同志，不仅仅是输出图像，关键是在窗体以外输出一个半透明的PNG，
只是输出后就消失或花屏。
Public Class Form1
Declare Auto Function GetDC Lib "user32.dll" (ByVal hwnd As Integer) As IntPtr
Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
Dim p As System.IntPtr = GetDC(0)
Dim png As New Bitmap("e:\bg.png")
Dim g As Graphics = Graphics.FromHdc(p)
g.DrawImage(png, 1000, 100, png.Width, png.Height)
End Sub
End Class
但为什么输出后图片闪一下消失，或象花屏一样的
感谢楼下同志，不仅仅是输出图像，关键是在窗体以外输出一个半透明的PNG，
只是输出后就消失或花屏。
Public Class Form1
Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
Dim png As New Bitmap("e:\bg.png")
Dim g As Graphics = Me.CreateGraphics
g.DrawImage(png, 1000, 100, png.Width, png.Height)
g.Dispose
End Sub
End Class
另：我记得貌似还有AutoRedraw=True