回答編集履歴
2
DLL環境を追記
test
CHANGED
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@@ -1,4 +1,4 @@
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1
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-
以下の修正で、こちらの環境(Win10x64, python=3.5.2, DLL=64bitANSIビルド)では正しく動作しました。
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1
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+
以下の修正で、こちらの環境(Win10x64, python=3.5.2, DLL=VS2010にて64bitANSIビルド)では正しく動作しました。
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2
2
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3
3
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- `class`ではなく`object`を得る
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4
4
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1
DLL例を追記
test
CHANGED
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@@ -5,6 +5,18 @@
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5
5
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- `cast`する
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6
6
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7
7
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```Python
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8
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+
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9
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+
userdll = windll.LoadLibrary('MyDLL.dll')
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10
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+
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11
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+
userdll.Sum.restype = c_int
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12
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+
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13
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userdll.Sum.argtypes = [POINTER(c_int), (c_int)]
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14
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+
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15
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+
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16
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+
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17
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+
length = c_int(16)
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18
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+
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19
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+
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8
20
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9
21
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#buffer = c_int * 16
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10
22
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@@ -24,6 +36,64 @@
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24
36
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25
37
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#p_buffer = <__main__.LP_c_long object at 0x0000016931FBC248>
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26
38
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39
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+
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40
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+
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41
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result = userdll.Sum( p_buffer, length)
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42
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+
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43
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print(result)
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44
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+
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27
45
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```
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28
46
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47
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+
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48
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+
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49
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+
MyDLL.h
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50
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+
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51
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```C++
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52
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+
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53
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#ifdef MYDLL_EXPORTS
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54
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+
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55
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#define MYDLL_API __declspec(dllexport)
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56
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+
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57
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#else
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58
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+
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59
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#define MYDLL_API __declspec(dllimport)
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60
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+
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61
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#endif
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62
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+
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63
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MYDLL_API int WINAPI Sum( int *pn, int count);
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64
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+
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65
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```
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66
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+
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67
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+
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68
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+
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69
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+
MyDLL.cpp
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70
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+
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71
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```C++
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72
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+
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73
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+
#define MYDLL_EXPORTS
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74
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+
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75
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#include "MyDLL.h"
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76
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+
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77
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MYDLL_API int WINAPI Sum( int *pn, int count)
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78
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+
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79
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{
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80
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+
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81
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int ret = 0;
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82
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+
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83
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for( int i = 0; i < count; i++){
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84
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+
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85
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pn[i] = i+1;
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86
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+
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87
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+
ret += pn[i];
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88
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+
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89
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}
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90
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+
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91
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+
return ret;
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92
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+
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93
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+
}
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94
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+
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95
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+
```
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96
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+
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97
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+
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98
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+
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29
99
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参考：[Mutate an integer array using ctypes](http://stackoverflow.com/questions/1325518/mutate-an-integer-array-using-ctypes)
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