This structure is used by the IG_gui_ip_edge_map_dlg function to show where there are changes in contrast in the original image.
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typedef struct tag AT_IGGUI_IP_EDGE_MAP
{
DWORD cbSize;
UINT uFlags;
HIGEAR hIGear;
HWND hWnd;
LPCHAR lpszTitle;
AT_RECT rc;
AT_MODE nType;
AT_ERRCOUNT nErrCount;
LPFNIGGUI_IP_UPDATE lpfnUpdateProc;
}AT_IGGUI_IP_EDGE_MAP;
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| Name | Type | Description |
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| cbSize | DWORD | Specifies the length, in bytes, of the structure. |
| uFlags | UINT | A set of bit flags you can use to initialize the dialog box. |
| hIGear | HIGEAR | A handle of an image. |
| hWnd | HWND | A handle of the window to update. |
| lpszTitle | LPCHAR | A dialog title. |
| rc | AT_RECT | An AT_RECT struct specifying the rectangular portion of the image on which to operate. |
| nType | AT_MODE | The type of edge map operation to perform, such as IG_EDGE_OP_LAPLACIAN, IG_EDGE_OP_ROBERTS, etc. The list of available types is in file accucnst.h. |
| nErrCount | AT_ERRCOUNT | The number of ImageGear errors that occurred during this function call. |
| lpfnUpdateProc | LPFNIGGUI_IP_UPDATE | A pointer to the function that is called when the 'Apply' button is clicked. |