Windbg命令系列---.printf

.printf的行为跟C语言的printf函数类似。

.printf [/D] [Option] "FormatString" [, Argument , ...]

　　指定格式字符串包含调试器标记语言（DML）。

Option

　　指定WinDbg应将FormatString解释为的文本消息类型。WinDbg为每种类型的调试器命令窗口消息分配背景和文本颜色；选择其中一个选项会使消息以适当的颜色显示。默认情况下，文本显示为正常级别的　　消息。以下选项可用：
　　

Option	Type of message	Title of colors in Options dialog box
/od	debuggee	Debuggee level command window
/oD	debuggee prompt	Debuggee prompt level command window
/oe	error	Error level command window
/on	normal	Normal level command window
/op	prompt	Prompt level command window
/oP	prompt registers	Prompt registers level command window
/os	symbols	Symbol message level command window
/ov	verbose	Verbose level command window
/ow	warning	Warning level command window

FormatString

　　指定格式字符串，如printf中所示。通常，转换字符的工作方式与C完全相同。对于浮点转换字符，除非使用l修饰符，否则64位参数将被解释为32位浮点数。支持%p转换字符，但它表示目标虚拟地址空间中的指针。它不能有任何修饰符，并且使用调试器的内部地址格式。支持以下附加转换字符：
　　

Character	Argument type	Argument	Text printed
%p	ULONG64	A pointer in the target's virtual address space.	The value of the pointer.
%N	DWORD_PTR (32 or 64 bits, depending on the host's architecture)	A pointer in the host's virtual address space.	The value of the pointer. (This is equivalent to the standard C %p character.)
%I	ULONG64	Any 64-bit value.	The specified value. If this is greater than 0xFFFFFFFF, it is printed as a 64-bit address; otherwise it is printed as a 32-bit address.
%ma	ULONG64	The address of a NULL-terminated ASCII string in the target's virtual address space.	The specified string.
%mu	ULONG64	The address of a NULL-terminated Unicode string in the target's virtual address space.	The specified string.
%msa	ULONG64	The address of an ANSI_STRING structure in the target's virtual address space.	The specified string.
%msu	ULONG64	The address of a UNICODE_STRING structure in the target's virtual address space.	The specified string.
%y	ULONG64	The address of a debugger symbol in the target's virtual address space.	A string containing the name of the specified symbol (and displacement, if any).
%ly	ULONG64	The address of a debugger symbol in the target's virtual address space.	A string containing the name of the specified symbol (and displacement, if any), as well as any available source line information.

Arguments

　　指定格式字符串的参数，如printf中的参数。指定的参数数应与FormatString中的转换字符数匹配。每个参数都是一个将由默认表达式计算器（MASM或C++）计算的表达式。

默认情况下，可以使用Options参数选择的颜色设置。要充分利用这些选项，必须首先使用“查看|选项”打开“选项”对话框，并更改调试器命令窗口消息的颜色设置。

下面的示例演示如何在格式字符串中包含DML标记：

.printf /D "Click <link cmd=\".chain /D\">here</link> to see extensions DLLs."

Windbg命令系列---.printf

上图中显示的输出有一个链接，您可以单击该链接执行<link>标记中指定的命令。下图显示了单击链接的结果。

Windbg命令系列---.printf