References ▼
#include "ltwrappr.h"
virtual L_INT LVectorBase::GetViewport(pViewport)
Gets the current view port.
Pointer to a RECT structure to be updated with the current view port data.
| Value | Meaning |
|---|---|
| SUCCESS | The function was successful. |
| < 1 | An error occurred. Refer to Return Codes. |
Use this function to get the view port associated with the vector handle.
If the vector is attached to a window, you must call this function when processing WM_SIZE messages, since the VECTOR library needs to know when the double buffer mode is selected.
This function and LVectorBase::SetCamera are required to complete the projection process from the vector image onto a 2D surface.
Required DLLs and Libraries
L_INT LVectorBase__GetViewportExample(HWND hWnd){L_INT nRet;RECT viewportRect;L_TCHAR szTemp[100];LVectorBase Vector;nRet = Vector.Load(MAKE_IMAGE_PATH(TEXT("random.dxf")));if(nRet != SUCCESS)return nRet;nRet = Vector.GetViewport(&viewportRect);if(nRet != SUCCESS)return nRet;wsprintf(szTemp,TEXT("Old View Port (%d,%d) (%d,%d)"),viewportRect.left,viewportRect.top,viewportRect.right,viewportRect.bottom);MessageBox(hWnd, szTemp, TEXT(""), MB_OK);viewportRect.left = 0;viewportRect.top = 0;viewportRect.right = 200;viewportRect.bottom = 200;nRet = Vector.SetViewport(&viewportRect);if(nRet != SUCCESS)return nRet;wsprintf(szTemp,TEXT("New View Port (%d,%d) (%d,%d)"),viewportRect.left,viewportRect.top,viewportRect.right,viewportRect.bottom);MessageBox(hWnd, szTemp, TEXT(""), MB_OK);return SUCCESS;}