dll
中的PageSetupDlg對(duì)話框。 如果可以直接調(diào)用這個(gè)對(duì)話框， 省掉了多少麻煩事啊。
但是用JNI調(diào)用dll中的函數(shù)也很麻煩，
還不如自己做一個(gè)頁面設(shè)置對(duì)話框來的方便。 于是查了一下sourceforge， 發(fā)現(xiàn)了JNative這個(gè)類庫。
在稍稍看了JNative的源碼之后覺得這個(gè)庫寫的真是不錯(cuò)。 封裝了許多Win32 api中的類型（HWND，DWORD， LPARAM 等等）
方便使用， 并且直接wrapper了不少dll （比如 Gdi32， Kernel32， Shell32， User32等dll），
其中居然也包括ComDlg32 （可惜只封裝了ChooseColor 顏色選擇對(duì)話框）。
不過不要緊， 既然有了ChooseColor的例子，那我們就自己動(dòng)手調(diào)用PageSetupDlg吧。
先查一下msdn， 看一看PageSetupDlg函數(shù)的用法
BOOL PageSetupDlg(
LPPAGESETUPDLG lppsd
);
PAGESETUPDLG Structure:
typedef struct tagPSD {
DWORD lStructSize;
HWND hwndOwner;
HGLOBAL hDevMode;
HGLOBAL hDevNames;
DWORD Flags;
POINT ptPaperSize;
RECT rtMinMargin;
RECT rtMargin;
HINSTANCE hInstance;
LPARAM lCustData;
LPPAGESETUPHOOK lpfnPageSetupHook;
LPPAGEPAINTHOOK lpfnPagePaintHook;
LPCTSTR lpPageSetupTemplateName;
HGLOBAL hPageSetupTemplate;
} PAGESETUPDLG, *LPPAGESETUPDLG;
其中有兩個(gè)結(jié)構(gòu)RECT， 和 POINT是Jnative 沒有封裝的， 我們先封裝這兩個(gè)結(jié)構(gòu)：
POINT.java
1 package de.ikoffice.ktableextension.printer;
2
3 import org.xvolks.jnative.exceptions.NativeException;
4 import org.xvolks.jnative.misc.basicStructures.AbstractBasicData;
5 import org.xvolks.jnative.misc.basicStructures.LONG;
6 import org.xvolks.jnative.pointers.Pointer;
7 import org.xvolks.jnative.pointers.memory.GlobalMemoryBlock;
8
9 /**
10 * @author Jun Huang
11 *
12 * The Gosurf Development Team
13 *
14 */
15 public class POINT extends AbstractBasicData<POINT> {
16 LONG x;
17 LONG y;
18
19 public POINT() throws NativeException {
20 super(null);
21 mValue = this;
22 createPointer();
23 }
24
25 /*
26 * (non-Javadoc)
27 *
28 * @see org.xvolks.jnative.misc.basicStructures.BasicData#createPointer()
29 */
30 public Pointer createPointer() throws NativeException {
31 pointer = new Pointer(new GlobalMemoryBlock(getSizeOf()));
32 return pointer;
33 }
34
35 /*
36 * (non-Javadoc)
37 *
38 * @see org.xvolks.jnative.misc.basicStructures.BasicData#getSizeOf()
39 */
40 public int getSizeOf() {
41 return 8;
42 }
43
44 /*
45 * (non-Javadoc)
46 *
47 * @see org.xvolks.jnative.misc.basicStructures.BasicData#getValueFromPointer()
48 */
49 public POINT getValueFromPointer() throws NativeException {
50 offset = 0;
51 x = new LONG(getNextInt());
52 y = new LONG(getNextInt());
53
54 return getValue();
55 }
56
57 public void setX(LONG x) throws NativeException {
58 this.x = x;
59 pointer.setIntAt(0, x.getValue());
60 }
61
62 public void setY(LONG y) throws NativeException {
63 this.y = y;
64 pointer.setIntAt(4, y.getValue());
65 }
66
67 }
RECT.java
1 /**
2 *
3 */
4 package de.ikoffice.ktableextension.printer;
5
6 import org.xvolks.jnative.exceptions.NativeException;
7 import org.xvolks.jnative.misc.basicStructures.AbstractBasicData;
8 import org.xvolks.jnative.misc.basicStructures.LONG;
9 import org.xvolks.jnative.pointers.Pointer;
10 import org.xvolks.jnative.pointers.memory.GlobalMemoryBlock;
11
12 /**
13 * @author Jun Huang
14 *
15 * The Gosurf Development Team
16 */
17 public class RECT extends AbstractBasicData<RECT> {
18 LONG left;
19 LONG top;
20 LONG right;
21 LONG bottom;
22
23
24 protected RECT() throws NativeException {
25 super(null);
26 mValue = this;
27 createPointer();
28 }
29
30 /* (non-Javadoc)
31 * @see org.xvolks.jnative.misc.basicStructures.BasicData#createPointer()
32 */
33 public Pointer createPointer() throws NativeException {
34 pointer = new Pointer(new GlobalMemoryBlock(getSizeOf()));
35 return pointer;
36 }
37
38 /* (non-Javadoc)
39 * @see org.xvolks.jnative.misc.basicStructures.BasicData#getSizeOf()
40 */
41 public int getSizeOf() {
42 return 16;
43 }
44
45 /* (non-Javadoc)
46 * @see org.xvolks.jnative.misc.basicStructures.BasicData#getValueFromPointer()
47 */
48 public RECT getValueFromPointer() throws NativeException {
49 offset = 0;
50 left = new LONG(getNextInt());
51 top = new LONG(getNextInt());
52 right = new LONG(getNextInt());
53 bottom = new LONG(getNextInt());
54
55 return getValue();
56 }
57
58 public void setLeft(LONG left) throws NativeException {
59 this.left = left;
60 pointer.setIntAt(0, left.getValue());
61 }
62
63 public void setTop(LONG top) throws NativeException {
64 this.top = top;
65 pointer.setIntAt(4, top.getValue());
66 }
67
68 public void setRight(LONG right) throws NativeException {
69 this.right = right;
70 pointer.setIntAt(8, right.getValue());
71 }
72
73 public void setBottom(LONG bottom) throws NativeException {
74 pointer.setIntAt(12, bottom.getValue());
75 }
76
77
78
79 }
80
然后封裝PAGESETDLG結(jié)構(gòu)
PAGESETUPDLG.java
1 package de.ikoffice.ktableextension.printer;
2
3 import org.xvolks.jnative.exceptions.NativeException;
4 import org.xvolks.jnative.misc.basicStructures.AbstractBasicData;
5 import org.xvolks.jnative.misc.basicStructures.HWND;
6 import org.xvolks.jnative.misc.basicStructures.LONG;
7 import org.xvolks.jnative.misc.basicStructures.LPARAM;
8 import org.xvolks.jnative.pointers.NullPointer;
9 import org.xvolks.jnative.pointers.Pointer;
10 import org.xvolks.jnative.pointers.memory.GlobalMemoryBlock;
11 import org.xvolks.jnative.util.Callback;
12
13 /**
14 * @author Jun Huang
15 *
16 * The Gosurf Development Team
17 *
18 */
19 public class PAGESETUPDLG extends AbstractBasicData<PAGESETUPDLG> {
20
21 LONG lStrurtSize;
22 HWND hwndOwner;
23 static Pointer hDevMode = new NullPointer();
24 static Pointer hDevNames = new NullPointer();
25 LONG flags;
26 POINT ptPaperSize;
27 RECT rtMinMargin;
28 RECT rtMargin;
29 HWND hInstance;
30 LPARAM lCustData;
31 Callback lpfnPageSetupHook;
32 Callback lpfnPagePaintHook;
33 Pointer lpPageSetupTemplateName;
34 static Pointer hPageSetupTemplate = new NullPointer();
35
36
37 public PAGESETUPDLG() throws NativeException {
38 super(null);
39 mValue = this;
40 createPointer();
41 }
42
43 public void removeCallback() throws NativeException {
44 //TODO
45 }
46
47 public void addCallback(Callback lCallback) throws NativeException {
48 removeCallback();
49
50 //TODO
51 }
52
53 public void setHwndOwner(HWND hwndOwner) throws NativeException {
54 this.hwndOwner = hwndOwner;
55 pointer.setIntAt(4, hwndOwner.getValue());
56 }
57
58 public void setFlags(LONG flags) throws NativeException {
59 this.flags = flags;
60 pointer.setIntAt(16, flags.getValue());
61 }
62
63 public void setHInstance(HWND instance) throws NativeException {
64 hInstance = instance;
65 pointer.setIntAt(60, instance.getValue());
66 }
67
68 public void setLCustData(LPARAM custData) throws NativeException {
69 lCustData = custData;
70 pointer.setIntAt(64, lCustData.getValue());
71 }
72
73 public void setLpPageSetupTemplateName(String lpPageSetupTemplateName) {
74
75 this.lpPageSetupTemplateName = new NullPointer();
76
77 }
78
79 /* (non-Javadoc)
80 * @see org.xvolks.jnative.misc.basicStructures.BasicData#createPointer()
81 */
82 public Pointer createPointer() throws NativeException {
83 pointer = new Pointer(new GlobalMemoryBlock(getSizeOf()));
84 pointer.setIntAt(0, getSizeOf());
85 pointer.setIntAt(8, hDevMode.getPointer());
86 pointer.setIntAt(12, hDevNames.getPointer());
87 return pointer;
88 }
89
90 /* (non-Javadoc)
91 * @see org.xvolks.jnative.misc.basicStructures.BasicData#getSizeOf()
92 */
93 public int getSizeOf() {
94
95 return 84;
96 }
97
98 /* (non-Javadoc)
99 * @see org.xvolks.jnative.misc.basicStructures.BasicData#getValueFromPointer()
100 */
101 public PAGESETUPDLG getValueFromPointer() throws NativeException {
102 offset = 0;
103 lStrurtSize = new LONG(getNextInt()); // 0
104 hwndOwner = new HWND(getNextInt()); // 4
105
106 //Skip hDevMode
107 offset += 4; // 8
108
109 //Skip hDevNames
110 offset += 4; // 12
111
112 flags = new LONG(getNextInt()); // 16
113
114 //ptPaperSize
115 ptPaperSize = new POINT(); // 20
116 ptPaperSize.setX(new LONG(getNextInt()));
117 ptPaperSize.setY(new LONG(getNextInt()));
118
119 //rtMinMargin // 28
120 rtMinMargin = new RECT();
121 rtMinMargin.setLeft(new LONG(getNextInt()));
122 rtMinMargin.setTop(new LONG(getNextInt()));
123 rtMinMargin.setRight(new LONG(getNextInt()));
124 rtMinMargin.setBottom(new LONG(getNextInt()));
125
126 //rtMargin // 44
127 rtMargin = new RECT();
128 rtMargin.setLeft(new LONG(getNextInt()));
129 rtMargin.setTop(new LONG(getNextInt()));
130 rtMargin.setRight(new LONG(getNextInt()));
131 rtMargin.setBottom(new LONG(getNextInt()));
132
133 hInstance = new HWND(getNextInt()); // 60
134
135 lCustData = new LPARAM(getNextInt()); // 64
136
137 //Skip lpfnPageSetupHook; // 68
138 offset += 4;
139
140 //Skip lpfnPagePaintHook; // 72;
141 offset += 4;
142
143 //Skip lpPageSetupTemplateName; // 76;
144 offset += 4;
145
146 //Skip hPageSetupTemplate; // 80;
147 offset += 4;
148
149 // 84
150
151 return getValue();
152
153 }
154
155 }
我們所希望的返回值是頁面大小和頁面空白大小：
PageSetupResult.java
1 /**
2 *
3 */
4 package de.ikoffice.ktableextension.printer;
5
6 /**
7 * @author Jun Huang
8 *
9 * The Gosurf Development Team
10 *
11 */
12 public class PageSetupResult {
13
14 public final static int LEFT = 0;
15 public final static int TOP = 1;
16 public final static int RIGHT = 2;
17 public final static int BOTTOM = 3;
18
19 private boolean ret = false;
20 private int[] margins = new int[4];
21 private int pageWidth = 0;
22 private int pageHeight = 0;
23
24 public PageSetupResult() {
25 ret = false;
26 for (int i=0; i<=BOTTOM; i++) {
27 margins[i] = 2500;
28 }
29 }
30
31 public boolean isRet() {
32 return ret;
33 }
34
35 public int[] getMargins() {
36 return margins;
37 }
38
39 public void setRet(boolean ret) {
40 this.ret = ret;
41 }
42
43 public void setMargins(int[] margins) {
44 this.margins = margins;
45 }
46
47 public void setMargin(int position, int mm) {
48 this.margins[position] = mm;
49 }
50
51 public int getMargin(int position) {
52 return margins[position];
53 }
54
55 public int getPageWidth() {
56 return pageWidth;
57 }
58
59 public int getPageHeight() {
60 return pageHeight;
61 }
62
63 public void setPageWidth(int pageWidth) {
64 this.pageWidth = pageWidth;
65 }
66
67 public void setPageHeight(int pageHeight) {
68 this.pageHeight = pageHeight;
69 }
70
71 }
72
萬事俱備，現(xiàn)在就可以點(diǎn)用PageSetupDlg函數(shù)了
ComDlg32Ex.java
1 package de.ikoffice.ktableextension.printer;
2
3 import org.xvolks.jnative.JNative;
4 import org.xvolks.jnative.Type;
5 import org.xvolks.jnative.exceptions.NativeException;
6 import org.xvolks.jnative.misc.basicStructures.HWND;
7 import org.xvolks.jnative.misc.basicStructures.LONG;
8 import org.xvolks.jnative.misc.basicStructures.LPARAM;
9 import org.xvolks.jnative.util.ComDlg32;
10
11 /**
12 * @author Jun Huang
13 *
14 * The Gosurf Development Team
15 */
16 public class ComDlg32Ex extends ComDlg32 {
17 //Cache the JNative object between calls.
18 private static JNative nPageSetupDlg;
19 public final static int PSD_MINMARGINS = 0x1;
20 public final static int PSD_MARGINS = 0x2;
21 public final static int PSD_INTHOUSANDTHSOFINCHES = 0x4;
22 public final static int PSD_INHUNDREDTHSOFMILLIMETERS = 0x8;
23
24
25 public static PageSetupResult PageSetupDlg(HWND lOwner, HWND hInstance, LONG Flags, LPARAM lCustData) throws NativeException, IllegalAccessException {
26 PageSetupResult ret = new PageSetupResult();
27
28 if(nPageSetupDlg == null) {
29 //JNative uses ANSI version ChooseColorA vs ChooseColorW
30 nPageSetupDlg = new JNative(DLL_NAME, "PageSetupDlgA");
31 //BOOL is in fact an INT
32 nPageSetupDlg.setRetVal(Type.INT);
33 }
34 PAGESETUPDLG nPageSetupDlgStruct = new PAGESETUPDLG();
35 nPageSetupDlgStruct.setHwndOwner(lOwner);
36 nPageSetupDlgStruct.setHInstance(hInstance);
37 nPageSetupDlgStruct.setFlags(Flags);
38 nPageSetupDlgStruct.setLCustData(lCustData);
39
40 nPageSetupDlg.setParameter(0, nPageSetupDlgStruct.getPointer());
41 nPageSetupDlg.invoke();
42
43 if("0".equals(nPageSetupDlg.getRetVal())) {
44 ret.setRet(false);
45 return ret;
46 }
47
48 ret.setRet(true);
49 ret.setMargin(PageSetupResult.LEFT, nPageSetupDlgStruct.getValueFromPointer().rtMargin.getValueFromPointer().left.getValue());
50 ret.setMargin(PageSetupResult.TOP, nPageSetupDlgStruct.getValueFromPointer().rtMargin.getValueFromPointer().top.getValue());
51 ret.setMargin(PageSetupResult.RIGHT, nPageSetupDlgStruct.getValueFromPointer().rtMargin.getValueFromPointer().right.getValue());
52 ret.setMargin(PageSetupResult.BOTTOM, nPageSetupDlgStruct.getValueFromPointer().rtMargin.getValueFromPointer().bottom.getValue());
53 ret.setPageWidth(nPageSetupDlgStruct.getValueFromPointer().ptPaperSize.getValueFromPointer().x.getValue());
54 ret.setPageHeight(nPageSetupDlgStruct.getValueFromPointer().ptPaperSize.getValueFromPointer().y.getValue());
55
56 return ret;
57 }
58
59 public static void main(String[] args) throws NativeException, IllegalAccessException {
60 PageSetupResult result = ComDlg32Ex.PageSetupDlg(new HWND(0), new HWND(0), new LONG(ComDlg32Ex.PSD_INHUNDREDTHSOFMILLIMETERS), new LPARAM(0));
61 System.out.println("The width of page: " + result.getPageWidth()+" mm");
62 System.out.println("The height of page: " + result.getPageHeight()+" mm");
63 System.out.println("The left margin of page: " + result.getMargin(PageSetupResult.LEFT) +" mm");
64 System.out.println("The top margin of page: " + result.getMargin(PageSetupResult.TOP) + " mm");
65 System.out.println("The right margin of page: " + result.getMargin(PageSetupResult.RIGHT) + " mm");
66 System.out.println("The bottom margin of page: " + result.getMargin(PageSetupResult.BOTTOM) + " mm");
67 }
68
69
70 }
71
有空的話我盡量把ComDlg32中的對(duì)話框補(bǔ)全， 有什么問題大家可以一起探討一下。
源碼下載