我会将地图加载到图形环境中,然后在其上绘制。
下面是一个如何绘制字符串的示例(可以在地图上旋转),gr.DrawString(,,,,0,0) 末尾的两个零将字符串放在左上角)。FromImage(bmp) 是您可以加载美国地图的地方,只需使用地图的文件地址将 bmp 导入文件路径,或将其添加到资源中。我会添加来自 Wingding 字体的彩色星星和圆圈,它们具有不同形状的字符,您只需要更改它们的颜色。我提供了字体大小,所以你必须使用它。
Dim bmp As New Bitmap(500, 15)
Dim gr As Graphics = Graphics.FromImage(bmp)
gr.SmoothingMode = SmoothingMode.HighQuality
gr.InterpolationMode = InterpolationMode.HighQualityBicubic
gr.PixelOffsetMode = PixelOffsetMode.HighQuality
gr.TextRenderingHint = TextRenderingHint.ClearTypeGridFit
gr.SmoothingMode = SmoothingMode.AntiAlias
Dim mybrush As New SolidBrush(Color.Yellow)
Dim fontbrush As New SolidBrush(Color.Black)
fontbrush.Color = SystemColors.ControlText
mybrush.Color = SystemColors.Control
Dim sfont As New Font("Microsoft Sans Serif", 9, FontStyle.Regular)
Dim strformat As StringFormat = New StringFormat(StringFormatFlags.DirectionVertical)
strformat.Alignment = StringAlignment.Far
Dim strToDraw As String
strToDraw = "Test string"
Dim stringSize As New SizeF()
stringSize = gr.MeasureString(strToDraw, sfont)
gr.FillRectangle(mybrush, CInt(0), CInt(0), stringSize.Width, stringSize.Height)
gr.DrawString(strToDraw, sgenefont, fontbrush, 0, 0)
gr.Dispose