<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>
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<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>
4 _3 z9 D* f5 f, c3 a% U<P class=MsoNormal><SPAN lang=EN-US> <o:p></o:p></SPAN></P>
. w7 j. `+ a. P: ^. }<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>5 s2 b& q2 m- o# r0 R( x0 {
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<P class=MsoNormal><SPAN lang=EN-US>BOOL WINAPI PickIconDlg(</SPAN></P>
5 K) m. C& T9 u* i<P class=MsoNormal><SPAN lang=EN-US>HWND hwndOwner, </SPAN></P>7 z% O5 Q0 r5 [4 z' H% ~# `
<P class=MsoNormal><SPAN lang=EN-US>LPSTR lpstrFile, </SPAN></P>
. G) w4 n& r" q) Q1 j<P class=MsoNormal><SPAN lang=EN-US>DWORD nMaxFile, </SPAN></P>
# X; n2 F# i+ {' K% l" v- w5 i* d<P class=MsoNormal><SPAN lang=EN-US>LPDWORD lpdwIconIndex);</SPAN></P>" k- Y' j6 {* K, g& U6 {
<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>
3 {1 L) I) j! Q+ c, M% [<P class=MsoNormal><SPAN lang=EN-US> <o:p></o:p></SPAN></P>
- \( ?2 J4 R% M<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>2 d1 s! n( ~, Z
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<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>
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# @, n: O+ G4 q<P class=MsoNormal><SPAN lang=EN-US>void WINAPI RunFileDlg(</SPAN></P>( q3 O/ j' W0 @, S6 l; m
<P class=MsoNormal><SPAN lang=EN-US>HWND hwndOwner, </SPAN></P>
& O8 r; ^: X% u, O& j9 p/ q<P class=MsoNormal><SPAN lang=EN-US>HICON hIcon, </SPAN></P>
/ F* K# O J8 v# F<P class=MsoNormal><SPAN lang=EN-US>LPCSTR lpstrDirectory, </SPAN></P>7 X( m$ t: z3 e# U6 a
<P class=MsoNormal><SPAN lang=EN-US>LPCSTR lpstrTitle, </SPAN></P>& @4 ~- J1 f* n; c9 Z T6 p4 G
<P class=MsoNormal><SPAN lang=EN-US>LPCSTR lpstrDescription,</SPAN></P>- T! _( v4 C/ D9 i' W
<P class=MsoNormal><SPAN lang=EN-US>UINT uFlags);</SPAN></P>: l: k6 Z! M0 ^* A; B
<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>2 w8 F7 _ ^; @9 l% ^
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" Q( }2 t5 s ~: }<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>6 A/ C4 \# r3 |: Q3 X, e! q
<P class=MsoNormal><SPAN lang=EN-US> <o:p></o:p></SPAN></P>
4 v6 R0 j* _0 |. m4 J% T" |<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>/ y" d3 _6 e; [3 \$ H0 S0 S# y
<P class=MsoNormal><SPAN lang=EN-US> <o:p></o:p></SPAN></P>
) g0 m N. J4 E<P class=MsoNormal><SPAN lang=EN-US>RFF_NOBROWSE 0x01 Removes the browse button. </SPAN></P>+ P* q Z6 A9 e0 T
<P class=MsoNormal><SPAN lang=EN-US>RFF_NODEFAULT 0x02 No default item selected. </SPAN></P>
0 d' h5 y* i* B+ b6 W: Y* U* w/ i<P class=MsoNormal><SPAN lang=EN-US>RFF_CALCDIRECTORY 0x04 Calculates the working directory from the file name. </SPAN></P>+ ^ A, Y: A! h
<P class=MsoNormal><SPAN lang=EN-US>RFF_NOLABEL 0x08 Removes the edit box label. </SPAN></P>' L/ f& P: [1 y) L, ]
<P class=MsoNormal><SPAN lang=EN-US>RFF_NOSEPARATEMEM 0x20 Removes the Separate Memory Space check box (Windows NT only). </SPAN></P> |