findwindowexa_vb findwindowex怎么用_findwindowex函数

FindWindowExA在PB10.5下调用取不到句柄

1、我在函数声中这样定义的

Function long FindWindowExA ( long hWnd, long hWndChild,string lpszClass,string lpszWindow) library "User32.dll" alias for "FindWindowExA;Ansi"

2、在调用时候，这样定义的函数

函数名of_gettoolbarhandle

返回值 ：long

函数参数：aw_frame，参数类型：qindow

函数体：

longll_NULL, ll_hwndToolBar

stringls_ClassName, ls_WindowName

EnvironmentlEnv

IF IsValid( aw_Frame ) AND (GetEnvironment(lEnv) = 1) THEN

CHOOSE CASE lEnv.PBMajorRevision

CASE 6

ls_ClassName = "FNFIXEDBAR60"

case 8

ls_ClassName = "FNFIXEDBAR80"

case 7

ls_ClassName = "FNFIXEDBAR70"

case 9

ls_ClassName = "FNFIXEDBAR90"

case 10

ls_ClassName = "FNFIXEDBAR100"

END CHOOSE

SetNull(ls_WindowName)

SetNull(ll_NULL)

ll_hwndToolBar =FindWindowExW( Handle(aw_Frame), ll_NULL, ls_ClassName, ls_WindowName )

messagebox('ll_hwndToolBar',ll_hwndToolBar)

END IF

RETURN ll_hwndToolBar

3、调用of_gettoolbarhandle，在MDI窗体的OPEN中调用的 ，

ll_hwndToolBar = of_GetToolBarHandle( w_main)

4、问题：ll_hwndToolBar的返回值不对，总是0。findwindowexa请

大家帮忙看看。findwindowexa

[解决办法]

用以下代码试试

ls_ClassName = "FNFIXEDBAR105"

SetNull(ls_WindowName)

SetNull(ll_NULL)

ll_hwndToolBar =FindWindowExW( Handle(aw_Frame), ll_NULL, ls_ClassName, ls_WindowName )

messagebox('ll_hwndToolBar',ll_hwndToolBar)

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