LRasterPaint::IsValid
#include "Ltwrappr.h"
L_INT LRasterPaint::IsValid(L_VOID)
Determines the validity of the class object's paint handle.
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes |
Comments
The paint handle will be valid after calling LRasterPaint::Initialize, and will remain valid until LRasterPaint::Free is called.
The paint handle is a private member of the LRasterPaint class object. For more information about the paint handle, refer to the PAINTHANDLE structure.
Required DLLs and Libraries
LTPNT For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application |
See Also
Functions: |
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Topics: |
Example
L_INT CTest1View::Test ( LRasterPaint rstp, CWnd* pWnd )
{
if ( SUCCESS == rstp.IsValid () )
{
CDC* pDC = pWnd->GetDC();
RECT rcShape;
/* Set the coordinates with respect to the DC dimensions*/
SetRect ( &rcShape, 10, 10, 150, 150 ) ;
/* Use the current shape properties to draw an ellipse*/
rstp.DrawShapeEllipse ( pDC->m_hDC, &rcShape ) ;
pWnd->ReleaseDC( pDC ) ;
}
else
{
pWnd->MessageBox (TEXT("Invalid PAINTHANDLE"), TEXT("Error"), MB_OK ) ;
}
return SUCCESS ;
}