vb 必选参数

Call Mech_Calculation(Xa, Ya, AB, BC, CI, IH, HG, angXAB, angABC, angBCI, angCIH, angHIG, Xb, Yb, Xc, Yc, Xi, Yi, Xh, Yh, Xg, Yg)
Private Sub Mech_Calculation(ByVal X_a As Single, Y_a As Single, ByVal AB As Single, ByVal BC As Single, ByVal CI As Single, ByVal IH As Single, ByVal HG As Single, ByVal ang_XAB As Double, ByVal ang_ABC, ByVal ang_BCI, ByVal ang_CIH, ByVal ang_IHG As Double, ByRef X_b As Single, ByRef Y_b As Single, ByRef X_c As Single, ByRef Y_c As Single, ByRef X_i As Single, ByRef Y_i As Single, ByRef X_h As Single, ByRef X_f As Single, ByRef Y_f As Single, ByRef X_d As Single, ByRef X_e As Single, ByRef Y_e As Single, ByRef X_f As Single, ByRef Y_f As Single)

Dim PI As Double

PI = 3.1415926

X_b = X_a + AB * Cos(ang_XAB * PI / 180)
Y_b = Y_a + AB * Sin(ang_XAB * PI / 180)

X_c = X_b + BC * Cos((ang_XAB + ang_ABC) * PI / 180)
Y_c = Y_b + BC * Sin((ang_XAB + ang_ABC) * PI / 180)

X_i = X_c + CI * Cos((ang_BCI + ang_XAB + ang_ABC - 180) * PI / 180)
Y_i = Y_c + CI * Cos((ang_BCI + ang_XAB + ang_ABC - 180) * PI / 180)

X_h = X_i + IH * Cos((ang_BCI + ang_XAB + ang_ABC + angCIH - 180) * PI / 180)
Y_h = Y_i + IH * Cos((ang_BCI + ang_XAB + ang_ABC + ang_CIH - 180) * PI / 180)

X_g = X_i + HG * Cos((ang_BCI + ang_XAB + ang_ABC + angCIH + angIHG - 180) * PI / 180)
Y_g = X_i + HG * Sin((angBCI + ang_XAB + ang_ABC_angCIH_angIHG - 180) * PI / 180)

X_d = X_c - CI * Cos((ang_XAB + ang_ABC - ang_BCI) * PI / 180)
Y_d = Y_c + CI * Sin((ang_XAB + ang_ABC - ang_BCI) * PI / 180)

X_e = X_d + HI * Cos((ang_BCI + ang_CIH - ang_XAB - ang_ABC) * PI / 180)
Y_e = Y_d + HI * Sin((ang_BCI + ang_CIH - ang_XAB - ang_ABC) * PI / 180)

X_h = X_e + HG * Cos((ang_BCI + ang_CIH - ang_XAB - angABC + ang_IHG) * PI / 180)
Y_h = Y_e + HG * Sin((ang_BCI + ang_CIH - ang_XAB - angABC + ang_IHG) * PI / 180)

End Sub
为什么总是说缺少必选参数阿

你仔细看看调用 Mech_Calculation时给的参数够么，明显比定义的参数要少，过程既然未定义可选参数，那么参数要一一对应，缺省也要有"，"分隔符分隔

是不是应为你没有定义啊 你按以下方法试试 dim second as long '直接整型的数就行 dim minute as long private sub form_load() second = 0 minute = 0 end sub private sub timer1_timer() second = second + 1 //这里提示必选参数 if second = 60 then minute = minute + 1 second = 0 end if label2.caption = minute + "分" + second + "秒" end sub

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