文章目录：
怎么将png格式图片转成bmp的
图片格式批量转成bmp的方法：
工具软件：优速图片格式转换器
步骤1，打开工具软件，点击左边功能区中最上面的“格式转换”按钮。
步骤2，点击“添加文件”将需要转换格式的图片文件全部添加到软件中，也可以直接拖动图片到软件中进行添加。如果你有很多图片需要格式转换，请一次性批量添加，此方法支持批量转换格式。
步骤3，如下图所示，在软件右下方位置处将图片的输出格式设置成“bmp”。然后点击“开始转换”按钮，启动图片格式转换程序。
步骤4，随后软件会自动打开一个文件夹，转换成bmp格式的图片会全部保存到这个文件夹内。
如何把png格式图片批量转成bmp图片，需要批量转
批量将图片格式转成bmp的方法，支持png批量转成bmp:
步骤1，打开工具中的软件，点击左边功能区中最上面的“格式转换”按钮。
步骤2，点击“添加文件”将需要转换格式的图片文件全部添加到软件中，也可以直接拖动图片到软件中进行添加。如果你有很多图片需要格式转换，请一次性批量添加，此方法支持批量转换格式。
步骤3，如下图所示，在软件右下方位置处将图片的输出格式设置成“bmp”。然后点击“开始转换”按钮，启动图片格式转换程序。
步骤4，随后软件会自动打开一个文件夹，转换成bmp格式的图片会全部保存到这个文件夹内。
bmp格式转换PNG格式 c语言或c++编程
BMP是最简单的图形存储格式，在c++里有朋友封装了一个类CDib.
只要把图片使用附件中编辑--粘贴来源找到图画打开另存为选择你想要的格式保存就可以了。也可以右键点击选择打开方式使用图画打开相同的方法。另外photoshop 和office2003的picture manage也有这个功能。
Private Sub mnuconvertBMPtoJPG_Click()
Dim tmpimage As imgdes ' Image descriptors
Dim tmp2image As imgdes
Dim rcode As Long
Dim quality As Long
Dim vbitcount As Long
Dim bdat As BITMAPINFOHEADER ' Reserve space for BMP struct
Dim bmp_fname As String
Dim jpg_fname As String
bmp_fname = "test.bmp"
jpg_fname = "test.jpg"
quality = 75
' Get info on the file we're to load
rcode = bmpinfo(bmp_fname, bdat)
If (rcode NO_ERROR) Then
MsgBox "Cannot find file", 0, "Error encountered!"
Exit Sub
End If
vbitcount = bdat.biBitCount
If (vbitcount = 16) Then ' 16-, 24-, or 32-bit image is loaded into 24-bit buffer
vbitcount = 24
End If
' Allocate space for an image
rcode = allocimage(tmpimage, bdat.biWidth, bdat.biHeight, vbitcount)
If (rcode NO_ERROR) Then
MsgBox "Not enough memory", 0, "Error encountered!"
Exit Sub
End If
' Load image
rcode = loadbmp(bmp_fname, tmpimage)
If (rcode NO_ERROR) Then
freeimage tmpimage ' Free image on error
MsgBox "Cannot load file", 0, "Error encountered!"
Exit Sub
End If
If (vbitcount = 1) Then ' If we loaded a 1-bit image, convert to 8-bit grayscale
' because jpeg only supports 8-bit grayscale or 24-bit color images
rcode = allocimage(tmp2image, bdat.biWidth, bdat.biHeight, 8)
If (rcode = NO_ERROR) Then
rcode = convert1bitto8bit(tmpimage, tmp2image)
freeimage tmpimage ' Replace 1-bit image with grayscale image
copyimgdes tmp2image, tmpimage
End If
End If
' Save image
rcode = savejpg(jpg_fname, tmpimage, quality)
freeimage tmpimage
End Sub
........... Add these defines and declarations to your Global module ...........
' Image descriptor
Type imgdes
ibuff As Long
stx As Long
sty As Long
endx As Long
endy As Long
buffwidth As Long
palette As Long
colors As Long
imgtype As Long
bmh As Long
hBitmap As Long
End Type
Type BITMAPINFOHEADER
biSize As Long
biWidth As Long
biHeight As Long
biPlanes As Integer
biBitCount As Integer
biCompression As Long
biSizeImage As Long
biXPelsPerMeter As Long
biYPelsPerMeter As Long
biClrUsed As Long
biClrImportant As Long
End Type
Declare Function bmpinfo Lib "VIC32.DLL" (ByVal Fname As String, bdat As BITMAPINFOHEADER) As Long
Declare Function allocimage Lib "VIC32.DLL" (image As imgdes, ByVal wid As Long, ByVal leng As Long, ByVal BPPixel As Long) As Long
Declare Function loadbmp Lib "VIC32.DLL" (ByVal Fname As String, desimg As imgdes) As Long
Declare Sub freeimage Lib "VIC32.DLL" (image As imgdes)
Declare Function convert1bitto8bit Lib "VIC32.DLL" (srcimg As imgdes, desimg As imgdes) As Long
Declare Sub copyimgdes Lib "VIC32.DLL" (srcimg As imgdes, desimg As imgdes)
Declare Function savejpg Lib "VIC32.DLL" (ByVal Fname As String, srcimg As imgdes, ByVal quality As Long) As Long
《图像处理----做一个自己的photoshop》
大部分都是源码，其中有bmp--jgep--GIF的代码.
如何将.png文件转换为.bmp文件？
直接用系统自带的画图板
将文件打开
然后另存为
选BMP格式就OK了
fname, tmpimage, quality) freeimage tmpimageEnd Sub........... Add these defines and decla