在vba环境中编写代码,在电脑屏幕找到与指定路径图片相同的位置,并输出坐标
时间: 2024-04-01 09:31:13 浏览: 226
以下是一个可以在 vba 环境中实现的示例代码,用于在电脑屏幕上查找指定路径的图片,并输出其在屏幕上的坐标。
```vb
Option Explicit
Private Declare PtrSafe Function FindWindowExA Lib "User32" (ByVal hWndParent As LongPtr, ByVal hWndChildAfter As LongPtr, ByVal lpszClass As String, ByVal lpszWindow As String) As LongPtr
Private Declare PtrSafe Function GetDC Lib "User32" (ByVal hWnd As LongPtr) As LongPtr
Private Declare PtrSafe Function ReleaseDC Lib "User32" (ByVal hWnd As LongPtr, ByVal hDC As LongPtr) As Long
Private Declare PtrSafe Function GetPixel Lib "Gdi32" (ByVal hdc As LongPtr, ByVal x As Long, ByVal y As Long) As Long
Private Declare PtrSafe Function DeleteDC Lib "Gdi32" (ByVal hdc As LongPtr) As LongPtr
Private Declare PtrSafe Function CreateCompatibleDC Lib "Gdi32" (ByVal hdc As LongPtr) As LongPtr
Private Declare PtrSafe Function SelectObject Lib "Gdi32" (ByVal hdc As LongPtr, ByVal hObject As LongPtr) As LongPtr
Private Declare PtrSafe Function LoadImageA Lib "User32" (ByVal hInst As LongPtr, ByVal lpszName As String, ByVal uType As Long, ByVal cxDesired As Long, ByVal cyDesired As Long, ByVal fuLoad As Long) As LongPtr
Private Const IMAGE_BITMAP = 0
Sub FindImage()
Dim hwnd As LongPtr
Dim hdc As LongPtr
Dim pic As LongPtr
Dim hdcTemp As LongPtr
Dim hObj As LongPtr
Dim x As Long
Dim y As Long
'指定要查找的图片路径
Const imagePath As String = "C:\Users\Administrator\Desktop\123.bmp"
'在桌面上查找所有的窗口
hwnd = FindWindowExA(0, 0, "Progman", vbNullString)
hwnd = FindWindowExA(hwnd, 0, "SHELLDLL_DefView", vbNullString)
hwnd = FindWindowExA(hwnd, 0, "SysListView32", vbNullString)
'获取屏幕DC
hdc = GetDC(hwnd)
'加载要查找的图片
pic = LoadImageA(0, imagePath, IMAGE_BITMAP, 0, 0, &H10)
'创建兼容屏幕的DC
hdcTemp = CreateCompatibleDC(hdc)
'选择要查找的图片
hObj = SelectObject(hdcTemp, pic)
'从屏幕左上角开始查找图片
For x = 0 To Screen.Width - 1
For y = 0 To Screen.Height - 1
If GetPixel(hdcTemp, x, y) = GetPixel(hdc, x, y) Then
Debug.Print "图片在屏幕上的坐标为:(" & x & "," & y & ")"
Exit Sub
End If
Next y
Next x
'清除临时DC和对象
Call SelectObject(hdcTemp, hObj)
Call DeleteDC(hdcTemp)
'释放屏幕DC
Call ReleaseDC(hwnd, hdc)
End Sub
```
代码中使用了 Windows API 函数 FindWindowExA、GetDC、ReleaseDC、GetPixel、DeleteDC、CreateCompatibleDC、SelectObject 和 LoadImageA,其中 LoadImageA 函数用于加载要查找的图片,其他函数用于在屏幕上查找该图片并输出其坐标。需要注意的是,该代码只能查找 BMP 格式的图片,如果要查找其他格式的图片,需要适当修改代码。
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