使用vba旋转保存的图像

Question

我目前在excel中有一个userform,上面显示了图像(保存在临时文件夹"C:\ Temp\Photos"中)

我想要做的是有按钮(90,180,270)旋转位于"C:\ Temp\Photos"的图像.认为它可能是一个FileSystemObject,但还不知道他们还不知道如何做到这一点.

谢谢

编辑:按要求添加了一些代码.根据在组合框中选择的值插入图片.任何更改都会引用pic1-pic5(任何时候只有5个图片).

Private Sub ComboBox1_Change()
pic1 = "C:\Temp\Photos\" & Me.ComboBox1.Text & "\1.jpg"
pic2 = "C:\Temp\Photos\" & Me.ComboBox1.Text & "\2.jpg"
pic3 = "C:\Temp\Photos\" & Me.ComboBox1.Text & "\3.jpg"
pic4 = "C:\Temp\Photos\" & Me.ComboBox1.Text & "\4.jpg"
pic5 = "C:\Temp\Photos\" & Me.ComboBox1.Text & "\5.jpg"
If Dir(pic1) <> vbNullString Then
Me.Image1.Picture = LoadPicture(pic1)
Else
Me.Image1.Picture = LoadPicture("")
End If
If Dir(pic2) <> vbNullString Then
Me.Image2.Picture = LoadPicture(pic2)
Else
Me.Image2.Picture = LoadPicture("")
End If
If Dir(pic3) <> vbNullString Then
Me.Image3.Picture = LoadPicture(pic3)
Else
Me.Image3.Picture = LoadPicture("")
End If
If Dir(pic4) <> vbNullString Then
Me.Image4.Picture = LoadPicture(pic4)
Else
Me.Image4.Picture = LoadPicture("")
End If
If Dir(pic5) <> vbNullString Then
Me.Image5.Picture = LoadPicture(pic5)
Else
Me.Image5.Picture = LoadPicture("")
End If
End Sub

Answer 1

就像我提到的,没有内置的方法来旋转用户窗体中的图片.话虽如此,还有另一种方法可以达到你想要的效果.下面我演示了如何将图像旋转90度.

逻辑:

1. 插入临时表

2. 将图像插入该表

3. 使用IncrementRotation旋转属性

4. 将图像导出到用户的临时目录

5. 删除临时表

6. 加载图像

准备你的表格

创建用户表单并插入图像控件和命令按钮.您的表单可能如下所示.图像控制的设置PictureSizeMode,以fmPictureSizeModeStretch在属性窗口.

代码:

我写了一个RotatePic你可以通过学位的子课程.就像我提到的那样,这个例子会将它旋转90度,正如我刚才所展示的那样90.您可以为其余度数创建额外的按钮.我也对代码进行了评论,因此您不应该对它有任何问题.如果你这样做,那么只要问:)

Option Explicit

'~~> API to get the user's temp folder path
'~~> We will use this to store the rotated image
Private Declare Function GetTempPath Lib "kernel32" Alias "GetTempPathA" _
(ByVal nBufferLength As Long, ByVal lpBuffer As String) As Long

Private Const MAX_PATH As Long = 260

Dim NewPath As String

'~~> Load the image on userform startup
Private Sub UserForm_Initialize()
    Image1.Picture = LoadPicture("C:\Users\Public\Pictures\Sample Pictures\Koala.jpg")
End Sub

'~~> Rotating the image 90 degs
Private Sub CommandButton1_Click()
    RotatePic 90

    DoEvents

    Image1.Picture = LoadPicture(NewPath)
End Sub

'~~> Rotating the image
Sub RotatePic(deg As Long)
    Dim ws As Worksheet
    Dim p As Object
    Dim chrt As Chart

    '~~> Adding a temp sheet
    Set ws = ThisWorkbook.Sheets.Add

    '~~> Insert the picture in the newly created worksheet
    Set p = ws.Pictures.Insert("C:\Users\Public\Pictures\Sample Pictures\Koala.jpg")

    '~~> Rotate the pic
    p.ShapeRange.IncrementRotation deg

    '~~> Add a chart. This is required so that we can paste the picture in it
    '~~> and export it as jpg
    Set chrt = Charts.Add()

    With ws
        '~~> Move the chart to the newly created sheet
        chrt.Location Where:=xlLocationAsObject, Name:=ws.Name

        '~~> Resize the chart to match shapes picture. Notice that we are
        '~~> setting chart's width as the pictures `height` becuse even when
        '~~> the image is rotated, the Height and Width do not swap.
        With .Shapes(2)
            .Width = p.Height
            .Height = p.Width
        End With

        .Shapes(p.Name).Copy

        With ActiveChart
            .ChartArea.Select
            .Paste
        End With

        '~~> Temp path where we will save the pic
        NewPath = TempPath & "NewFile.Jpg"

        '~~> Export the image
        .ChartObjects(1).Chart.Export Filename:=NewPath, FilterName:="jpg"
    End With

    '~~> Delete the temp sheet
    Application.DisplayAlerts = False
    ws.Delete
    Application.DisplayAlerts = True
End Sub

'~~> Get the user's temp path
Function TempPath() As String
    TempPath = String$(MAX_PATH, Chr$(0))
    GetTempPath MAX_PATH, TempPath
    TempPath = Replace(TempPath, Chr$(0), "")
End Function

在行动中

运行用户窗体时,将上载图像,当您单击该按钮时,图像将被旋转!