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未公开API函数揭秘——通用对话框

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发表于 2008-9-28 16:29:36 | 显示全部楼层 |阅读模式
<P class=MsoNormal><SPAN lang=EN-US>COMDLG32.DLL </SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">为我们提供了一些很有用的对话框,但是仍然有部分我们可能会用到的系统对话框它却没有提供。如果试图复制这些系统对话框将是一件麻烦的苦差事。幸好</SPAN><SPAN lang=EN-US>shell32.dll</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">为我们提供了这些对话框,本文将带你去发掘一些未公开的</SPAN><SPAN lang=EN-US>API</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">函数,以实现这些对话框。</SPAN></P>0 L. i6 T& v5 F4 g1 e$ C
<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></P>4 @5 q8 x$ K0 g6 K# w) h' q
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在使用未公开的</SPAN><SPAN lang=EN-US>API</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">函数之前,你必须知道声明未公开的</SPAN><SPAN lang=EN-US>API</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">函数与声明那些公开的</SPAN><SPAN lang=EN-US>API</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">函数略有不同,那就是,你必须用到未公开</SPAN><SPAN lang=EN-US>API</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">函数的顺序号</SPAN><SPAN lang=EN-US>(ordinal number)</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。这个顺序号就是未公开函数的别名。也就是说在声明未公开</SPAN><SPAN lang=EN-US>API</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">函数时,必须加上它的别名。例如下面要说到的</SPAN><SPAN lang=EN-US>PickIconDlg</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">函数的顺序号为</SPAN><SPAN lang=EN-US>62</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">,它的别名就是</SPAN><SPAN lang=EN-US>"#62"</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。如果不这样做,系统会提示你找不到函数的入口点。</SPAN></P>% D  F  q6 C; u5 ]% {, j& g
<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>
1 O6 @8 Z1 w( F1 V% N& S<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">选取图标</SPAN></P>
# b  [7 k* k. t$ }9 W$ X. N<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>: `+ u; v" P2 O- v1 x. N7 _
<P class=MsoNormal><SPAN lang=EN-US>BOOL WINAPI PickIconDlg(</SPAN></P>8 Q' Y) J! m$ V; y* G3 a# [) A
<P class=MsoNormal><SPAN lang=EN-US>HWND hwndOwner, </SPAN></P>& i% b6 J: X0 X
<P class=MsoNormal><SPAN lang=EN-US>LPSTR lpstrFile, </SPAN></P>
) @: d: k( \9 s- A" N<P class=MsoNormal><SPAN lang=EN-US>DWORD nMaxFile, </SPAN></P>" R1 n# ]7 T1 d) U6 W+ U
<P class=MsoNormal><SPAN lang=EN-US>LPDWORD lpdwIconIndex);</SPAN></P>0 n7 M* X: \5 v
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">该函数的顺序号为</SPAN><SPAN lang=EN-US>62</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN></P>' o( H. `2 ~. _# p
<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>3 f5 [$ _  D: L
<P class=MsoNormal><SPAN lang=EN-US>hwndOwner</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">拥有该对话框的窗口句柄</SPAN><SPAN lang=EN-US> lpstrFile</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">指向一个缓冲,包含初始的文件名。函数返回后它就包含新的文件名。</SPAN><SPAN lang=EN-US>nMaxFile</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">指定缓冲的大小,以字符为单位。</SPAN><SPAN lang=EN-US> lpdwIconIndex</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">指向一个变量其中包含基于零的图标的索引。函数返回后它包含新图标的索引值。</SPAN> <SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如果用户选择了图标,则返回值为真,如果用户选择取消按钮或是系统菜单的关闭选项则返回值为假。</SPAN></P>
3 i+ j% v6 ^  \; q<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>$ j: w* q. m  h( e
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">运行程序对话框</SPAN></P>
9 |1 L- I& J2 g" }/ j<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>8 M. X; I2 p: |. J
<P class=MsoNormal><SPAN lang=EN-US>void WINAPI RunFileDlg(</SPAN></P>4 g) l7 c' V: Q2 R
<P class=MsoNormal><SPAN lang=EN-US>HWND hwndOwner, </SPAN></P>6 {* e0 X  n! |8 `, r
<P class=MsoNormal><SPAN lang=EN-US>HICON hIcon, </SPAN></P>9 x$ N9 S7 a4 ]) l# g$ n' g7 n
<P class=MsoNormal><SPAN lang=EN-US>LPCSTR lpstrDirectory, </SPAN></P>
" C% L) M6 n  v% d- S9 u<P class=MsoNormal><SPAN lang=EN-US>LPCSTR lpstrTitle, </SPAN></P>
! |! H" O' [) e' L/ {: A<P class=MsoNormal><SPAN lang=EN-US>LPCSTR lpstrDescription,</SPAN></P>
: I4 a. J$ v+ q. w3 S0 ~; @( q<P class=MsoNormal><SPAN lang=EN-US>UINT uFlags);</SPAN></P>" h5 M) W+ V7 S( b0 W
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">该函数的顺序号为</SPAN><SPAN lang=EN-US>61</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。在</SPAN><SPAN lang=EN-US>VB</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中可声明如下:</SPAN></P>
; j$ n  z! V  r0 N0 c( V( |<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>
' Y6 F2 H* |' N, F3 @( I( ~<P class=MsoNormal><SPAN lang=EN-US>Private Declare Function RunFileDlg Lib "shell32" Alias "#61" (ByVal hwndOwner As Long, ByVal hIcon As Long, ByVal lpstrDirectory As String, ByVal lpstrTitle As String, ByVal lpstrDescription As String, ByVal uFlags As Long) As Long</SPAN></P>
& N; ^# z, Y' I+ X<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>
" G6 v! y' T( y4 `1 I: v+ P& H<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">其中</SPAN><SPAN lang=EN-US>uFlags</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">参数的可选值为</SPAN></P>6 f0 H$ n; L9 `5 [& ?; p9 t8 v3 G
<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>
3 `. Y$ b( v3 w4 S" ^- D3 ?$ R<P class=MsoNormal><SPAN lang=EN-US>RFF_NOBROWSE 0x01 Removes the browse button. </SPAN></P>; _2 e" U/ [, ]: t$ G$ C
<P class=MsoNormal><SPAN lang=EN-US>RFF_NODEFAULT 0x02 No default item selected. </SPAN></P>5 n9 D+ u" I' `6 j! s& T: u
<P class=MsoNormal><SPAN lang=EN-US>RFF_CALCDIRECTORY 0x04 Calculates the working directory from the file name. </SPAN></P>
' x% D( Q$ M/ S- m5 r<P class=MsoNormal><SPAN lang=EN-US>RFF_NOLABEL 0x08 Removes the edit box label. </SPAN></P>
% p1 G6 b9 }3 r- [<P class=MsoNormal><SPAN lang=EN-US>RFF_NOSEPARATEMEM 0x20 Removes the Separate Memory Space check box (Windows NT only). </SPAN></P>
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