vb.net GDI ,不是系統(tǒng)的字體,是工程目錄下的字體文件

GDI繪圖用字體必須安裝才能使用

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在客戶機部署應(yīng)用程序時，安裝該字體就行

vb.net GDI繪圖刷新問題

繪圖代碼寫在Paint事件中，如

Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint

Dim g As Graphics = Me.CreateGraphics

g.DrawLine(Pens.Red, 100, 100, 200, 100)

End Sub

'方法二：在 PictureBox1上顯示圖像----圖畫在Bitmap

PictureBox1.Image = Nothing

Dim wid As Integer = PictureBox1.ClientSize.Width

Dim hgt As Integer = PictureBox1.ClientSize.Height

Dim bm As New Bitmap(wid, hgt)

Dim g As Graphics = Graphics.FromImage(bm)

'畫圖代碼

'畫圖代碼

PictureBox1.Image = bm

PictureBox1.Refresh()

g.Dispose()

基于VBNET的GDI坐標系統(tǒng)如何設(shè)置坐標單位

123456789101112Dim picX, picY, x1, y1, x2, y2, a href=";tn=44039180_cprfenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YLPhmknAcvPjNhnvRYPAF90ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EnHb3rjbkrjc3rHc4nHn1rj0vPs" target="_blank" class="baidu-highlight"gdi/aX, a href=";tn=44039180_cprfenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YLPhmknAcvPjNhnvRYPAF90ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EnHb3rjbkrjc3rHc4nHn1rj0vPs" target="_blank" class="baidu-highlight"gdi/aYpicX = 0 '要轉(zhuǎn)換的Picture1坐標XpicY = 0 '要轉(zhuǎn)換的Picture1坐標Yx1 = Picture1.ScaleLefty1 = Picture1.ScaleTopx2 = Picture1.ScaleLeft + Picture1.ScaleWidthy2 = Picture1.ScaleTop + Picture1.ScaleHeight '記錄原先的坐標系統(tǒng)Picture1.ScaleMode = 3 '坐標系統(tǒng)設(shè)為像素a href=";tn=44039180_cprfenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YLPhmknAcvPjNhnvRYPAF90ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EnHb3rjbkrjc3rHc4nHn1rj0vPs" target="_blank" class="baidu-highlight"gdi/aX = Round((picX - x1) / (x2 - x1) * Picture1.ScaleWidth)gdiY = Round((picY - y1) / (y2 - y1) * Picture1.ScaleHeight)MsgBox "Picture1的坐標(" picX "," picY ")轉(zhuǎn)為GDI坐標是(" gdiX "," gdiY ")"Picture1.Scale (x1, y1)-(x2, y2) '改回原先的坐標系統(tǒng)

vb.net中使用GDI畫圖，然后平移，可是平移之前的圖還在，怎么去掉平移之前的，保留平移之后的？

如果是簡單的移動，先把圖形繪制到大小和PictureBox的Bitmap上，然后再繪制到PictureBox就行。

不過在VB.NET中用GDI繪制最好用BufferedGraphics圖形緩沖區(qū)，速度馬馬虎虎（VB就這樣了），但是不閃爍，不存在背景擦除的問題。