SystemParametersInfo SPI_GETWORKAREA的一个很蹊跷的问题
代码如下
在一个标准模块中声明了SystemParametersInfo 和相应常数,结构
Public Declare Function SystemParametersInfo Lib "user32" Alias "SystemParametersInfoA" (ByVal _ uAction As Long, ByVal _ uParam As Long, ByVal _ lpvParam As Any, ByVal _ fuWinIni As Long) As Long Public Type RECT 'SystemParametersInfo的lpvParam参数在SPI_GETWkarea下的结构要求 Left As Long Bottom As Long Right As Long Top As LongEnd TypePublic Const SPI_GETWORKAREA = 48
Private Sub Form_Load()Dim wkarea As RECT'先声明一个RECT型的变量SystemParametersInfo SPI_GETWORKAREA, 0, wkarea, 0'就是在这句出问题Me.Left = (wkarea.Left / Screen.TwipsPerPixelX)Me.Top = (wkarea.Top / Screen.TwipsPerPixelY)Me.Width = (wkarea.Right - wkarea.Left) / Screen.TwipsPerPixelXMe.Height = (wkarea.Bottom - wkarea.Top) / Screen.TwipsPerPixelYEnd Sub
Public Declare Function SystemParametersInfo Lib "user32" Alias "SystemParametersInfoA" (ByVal _ uAction As Long, ByVal _ uParam As Long, ByRef _ lpvParam As Any, ByVal _ fuWinIni As Long) As Long
[解决办法]
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