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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>6 f% ]% S4 U) ~" x: ~. k! L
<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>+ D0 H% p1 _2 v2 y4 X( }
<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>
8 q2 @8 ]& d! u<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>- h# R& S( f8 P" w* g1 g) G
<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>0 ^' P) e. E. K
<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>
+ p3 R4 y9 V' s3 w8 i<P class=MsoNormal><SPAN lang=EN-US>BOOL WINAPI PickIconDlg(</SPAN></P>( B; a. g- D- w3 C7 a4 H
<P class=MsoNormal><SPAN lang=EN-US>HWND hwndOwner, </SPAN></P>/ w* d+ B/ g: \: ~7 v+ _! O
<P class=MsoNormal><SPAN lang=EN-US>LPSTR lpstrFile, </SPAN></P>
- L( y2 X- C, {2 O: M<P class=MsoNormal><SPAN lang=EN-US>DWORD nMaxFile, </SPAN></P>
6 g/ L7 d' n0 K<P class=MsoNormal><SPAN lang=EN-US>LPDWORD lpdwIconIndex);</SPAN></P>
7 r& T' p  A; i<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>
" r/ \" m' J( z4 m0 I<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>
) b' b: f$ F, r6 {7 K<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>
( V5 Y" n( R9 t' W7 N<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>
+ ]5 q' a% d; |! N' h6 h7 r<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>
# p$ M! {& _; }( |8 f<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>% ?/ @9 n& B" e) V9 x4 u, e1 o: v
<P class=MsoNormal><SPAN lang=EN-US>void WINAPI RunFileDlg(</SPAN></P>
/ j. C5 S1 D+ ^; k: Y<P class=MsoNormal><SPAN lang=EN-US>HWND hwndOwner, </SPAN></P>+ O8 K! @: {6 [) X
<P class=MsoNormal><SPAN lang=EN-US>HICON hIcon, </SPAN></P>6 k; R, `- R; Y* }" G5 D
<P class=MsoNormal><SPAN lang=EN-US>LPCSTR lpstrDirectory, </SPAN></P>% e' a' \2 F  j# c
<P class=MsoNormal><SPAN lang=EN-US>LPCSTR lpstrTitle, </SPAN></P>6 n0 K8 t( M/ N7 ~3 z
<P class=MsoNormal><SPAN lang=EN-US>LPCSTR lpstrDescription,</SPAN></P>
" u! B7 d: L. U: d* @; `; l# G) W<P class=MsoNormal><SPAN lang=EN-US>UINT uFlags);</SPAN></P>
+ ^- ]2 r* F+ q$ k# J+ C4 ^<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>; U) D! p% b" G2 e
<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>
) v" U% V1 e& Q' p$ E  Q8 Z6 c<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>
1 Y% b0 L% o1 k' X1 \' Z: S6 m<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>& R( H* Q& Y! W- f
<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>8 [: t3 E5 ?% K4 Y; U' c
<P class=MsoNormal><SPAN lang=EN-US>&nbsp;<o:p></o:p></SPAN></P>8 v( u* c; M8 p+ l$ b" P' Q
<P class=MsoNormal><SPAN lang=EN-US>RFF_NOBROWSE 0x01 Removes the browse button. </SPAN></P>- j% F4 b/ r$ J5 J' |+ ~- ~* j7 Y, ]
<P class=MsoNormal><SPAN lang=EN-US>RFF_NODEFAULT 0x02 No default item selected. </SPAN></P>
# o) B7 v, f! w$ c9 G( N<P class=MsoNormal><SPAN lang=EN-US>RFF_CALCDIRECTORY 0x04 Calculates the working directory from the file name. </SPAN></P>
1 j4 _; y9 Q2 R<P class=MsoNormal><SPAN lang=EN-US>RFF_NOLABEL 0x08 Removes the edit box label. </SPAN></P>6 l9 V1 J9 P7 m" }  @+ n& L0 C" F% ]2 e) `
<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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