题
W32API.HWND targetHwnd = User32.INSTANCE.FindWindow("SunAwtFrame", "Frame")
W32API.HWND sourceHwnd = User32.INSTANCE.FindWindow("triuiScreen", "EVE")
W32API.HANDLE thumbnailH = new W32API.HANDLE()
NativeLibrary dwm = NativeLibrary.getInstance("dwmapi")
dwm.getFunction('DwmRegisterThumbnail').invoke(targetHwnd, sourceHwnd, thumbnailH)
给我
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x70f34bee, pid=7208, tid=7364
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing windows-x86 )
# Problematic frame:
# C [DWMAPI.DLL+0x4bee]
我有一种感觉,我这样做完全错误的,但在文档挖我并没有好处。
解决方案
在第三个参数是一个“out”参数,并需要一个指向手柄,而不是在手柄本身。所以,像
dwm.getFunction("DwmRegisterThumbnail")
.invoke(targetHwnd, sourceHwnd, new PointerByReference(thumbnailH))
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