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[求助]如何在驱动里判断出当前键盘的输入焦点在哪个窗口上?
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发表于: 2009-2-26 10:01
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教主是我,
技术研究而已,绝不搞伤天害理\破坏社会持续之事 请相信我的RP 
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敲了几天的代码
现在终于可以调用到NtUserGetForegroundWindow了 可是返回的句柄总是0 怎么回事呢? 自己想不出来,请大牛给看看. 我的代码是这样
KeAttachProcess( CsrEProcess );
while(TRUE) {
int ret;
HWND hwnd;
WCHAR ClassNameBuffer[64];
UNICODE_STRING ustrClassName;
KeDelayExecutionThread(
KernelMode, // IN KPROCESSOR_MODE WaitMode,
FALSE, // IN BOOLEAN Alertable,
&interval // IN PLARGE_INTEGER Interval
);
hwnd = NtUserGetForegroundWindow();
KdPrint(( " Keyboard: NtUserGetForegroundWindow return hwnd = %d\n", hwnd ));
ustrClassName.MaximumLength = 64 * sizeof(WCHAR);
ustrClassName.Buffer = ClassNameBuffer;
ret = NtUserGetClassName(
hwnd,
TRUE,
&ustrClassName
);
KdPrint(( " Keyboard: NtUserGetClassName return value = %d\n", ret ));
KdPrint(( " Keyboard: Foregrouond Window's Class Name = %wZ\n", &ustrClassName ));
WinDbg输出的调式信息如下 -------------------------------------------------->8--------------------------------------- Keyboard: NtUserGetForegroundWindow return hwnd = 0 Keyboard: NtUserGetClassName return value = 0 Keyboard: Foregrouond Window's Class Name = -------------------------------------------------->8--------------------------------------- 请大牛帮我看看是怎么回事 
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