C / C++ / MFC

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jawadali477 wrote:

typedef void CvMouseCallback( int CV_EVENT_LBUTTONDBCLK, int x, int y, int flags, void* param )
 
{
//do some stuff here
}

CvMouseCallback my_callback_function(int event, int x, int y, int flags, void *param) 
{
// do stuff
}

error C2660: 'SetDlgItemTextW' : function does not take 2 arguments
error C2660: 'SetDlgItemTextW' : function does not take 2 arguments 
error C2660: 'SetDlgItemTextW' : function does not take 2 arguments 
error C2664: 'cvSetMouseCallback' : cannot convert parameter 2 from 'CvMouseCallback (__cdecl *)(int,int,int,int,void *)' to 'CvMouseCallback' 

CvMouseCallback on_mouse( int event, int x, int y, int flags, void* param )

{
	//SetDlgItemText(IDC_Blue, (LPCTSTR) L"ok");
	CvScalar s; 
	CString Blue, Green, Red;
	IplImage* zoomed = (IplImage*) param;

	s=cvGet2D(zoomed,x,y);		// get the (x,y) pixel value 
	Blue.Format(_T("%0.2f"), s.val[0]);
	Green.Format(_T("%0.2f"), s.val[1]);
	Red.Format(_T("%0.2f"), s.val[2]);
	SetDlgItemText(IDC_Blue, Blue);   //error C2660
	SetDlgItemText(IDC_Green, Green);   //error C2660
	SetDlgItemText(IDC_Red, Red);    //error C2660
			
		
}

cvSetMouseCallback("box.png", on_mouse, (void*) zoomed) //error C2664 
(defined some other place);

jawadali477 wrote:

get the coordinates of the opened image with double click of mouse on the image using mouse callback function.

Quote:

get the coordinates of the opened image

Quote:

typedef struct tagBITMAPINFO {
BITMAPINFOHEADER bmiHeader;
RGBQUAD bmiColors[1];
} BITMAPINFO;

Quote:

BITMAPINFOHEADER

amir700 wrote:

show a powerpoint presentation in my VC++ windows application like a picture box