请问如何把两张图片合成后保存为一张图片？

zlz1981 2004-09-01 03:57:03

我想把一个picturebox上再放一个小的picturebox，上面的图片覆盖下面的，再在上面打些字，保存为一个jpg或bmp文件，请问应该怎么做，谢谢

...全文

3247 5 打赏收藏转发到动态举报

写回复

用AI写文章

5 条回复

切换为时间正序

请发表友善的回复…

发表回复

SeeSunSet 2004-09-01

打赏
举报

上传时图片可以改大小，图上写字
hp.q 发表于 2000-11-23 16:28:36 .NET技术 ←返回版面 [快速返回]

<%@ Page Language="c#" Debug="true" Trace="true"%>
<%@ Import Namespace="System.IO" %>
<%@ Import Namespace="System.Drawing" %>
<%@ Import Namespace="System.Drawing.Imaging" %>
<html>
<script runat =server>
void UploadBtn_Click(Object sender, EventArgs e) {
String filename;
String filename1;
String[] filename2;
int q;
filename=UploadFile.PostedFile.FileName ;
filename2=filename.Split(new Char[] {'\\'});
q=filename2.GetUpperBound(0);
filename1=filename2[q];
dis.Text="上传文件名："+filename1+"<br/>";
UploadFile.PostedFile.SaveAs(Server.MapPath(filename1));
ImageEditor.Visible = true;
dis.Text+="文件大小："+UploadFile.PostedFile.ContentLength+"字节数";
Image1.Src=filename1;
}
void UpdateBtn_Click(Object sender, EventArgs e) {
String filename1;
filename1=Image1.Src;
System.Drawing.Image image = System.Drawing.Image.FromFile(Server.MapPath(filename1));
System.Drawing.Image newimage = new Bitmap(image.Width, image.Height, PixelFormat.Format32bppRGB);
Graphics g = Graphics.FromImage(newimage);
g.DrawImage(image,0,0,image.Width,image.Height);
Font f = new Font(FontType.SelectedItem.Text, Int32.Parse(FontSize.SelectedItem.Text));
Brush b = new SolidBrush(Color.Red);
g.DrawString(Caption.Text, f, b, 10, 140);
g.Dispose();
System.Drawing.Image thumbImage = newimage.GetThumbnailImage(Int32.Parse(Width.Text),Int32.Parse(Height.Text),null,0);
image.Dispose();
thumbImage.Save(Server.MapPath(filename1), ImageFormat.JPEG);
Image1.Src=filename1;
Caption.Text="";

}

</script>

<body>
<asp:label id="dis" runat=server/>
<form enctype="multipart/form-data" runat=server>

<h3>

Select File To Upload: <input id="UploadFile" type=file runat=server>

<asp:button Text="Upload Me!" OnClick="UploadBtn_Click" runat=server/>

<hr>

<asp:panel id="ImageEditor" Visible=false runat=server>

<img ID="Image1" src="" runat="server"/>

<h3>
Image Width: <asp:textbox id="Width" runat=server/>

Image Height: <asp:textbox id="Height" runat=server/> <br/>

Text Caption: <asp:textbox id="Caption" runat=server/>

Caption Size: <asp:dropdownlist id="FontSize" runat=server>
<asp:listitem>14</asp:listitem>
<asp:listitem>18</asp:listitem>
<asp:listitem>26</asp:listitem>
<asp:listitem>36</asp:listitem>
<asp:listitem>48</asp:listitem>
<asp:listitem>62</asp:listitem>
</asp:dropdownlist>
Caption Font: <asp:dropdownlist id="FontType" runat=server>
<asp:listitem>黑体</asp:listitem>
<asp:listitem>仿宋</asp:listitem>
<asp:listitem>隶书</asp:listitem>
<asp:listitem>楷书</asp:listitem>
<asp:listitem>方正姚体</asp:listitem>
<asp:listitem>华文彩云</asp:listitem>
</asp:dropdownlist>

<asp:button Text="Update Image" OnClick="UpdateBtn_Click" runat=server/>

</h3>
</asp:panel>

</form>

</body>
</html>

tong2402 2004-09-01

打赏
举报

1:tuxing,tuxing1,tuxing2是image对象。你可以用打开图片的方法来赋值，注意谁在上面，谁在下面。tuxing2是合成后的图象
2：color1是color对象。

zlz1981 2004-09-01

打赏
举报

还有color1是什么类型？

zlz1981 2004-09-01

打赏
举报

能不能麻烦给出完整的代码？
或者给出思路及关键代码
tong2402
你给的代码的tuxing,tuxing1,tuxing2是image对象吗？
可是image 对象好象没有setpixel方法啊

tong2402 2004-09-01

打赏
举报

tuxing2 = PictureBox3.Image
tuxing.Width.Equals(200)
tuxing.Height.Equals(200)
Dim i As Integer ' x轴坐标
Dim j As Integer ' y轴坐标
Dim col_1 As Long ' Picture1像素值
Dim col_2 As Long ' Picture2像素值
Dim r, g, b As Short
For i = 0 To PictureBox3.Size.Width - 1
For j = 0 To PictureBox3.Size.Height - 1
color1 = tuxing.GetPixel(i, j)
color2 = tuxing1.GetPixel(i, j)
r = color1.R
g = color1.G
b = color1.B
col_1 = r + g + b
If col_1 = 3 * 255 Then
tuxing2.SetPixel(i, j, color2) ' (.PSet(i, j), col_2)
Else
tuxing2.SetPixel(i, j, color1)
End If
Next j
PictureBox3.Refresh()
Next i