Available in LEADTOOLS Imaging Pro, Vector, Document, and Medical Imaging toolkits. |
LBitmapWindow::Repaint
#include "ltwrappr.h"
L_VOID LBitmapWindow::Repaint(pRect=NULL)
LPRECT pRect; |
/* pointer to a rectangle structure */ |
Repaints the class object's window. Only the specified rectangle will be repainted.
Parameter |
Description |
pRect |
Pointer to a rectangle structure that describes the rectangle to be repainted. Pass NULL to repaint the entire window. |
Returns
None
Required DLLs and Libraries
LTDIS For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
Platforms
Win32, x64.
See Also
Functions: |
Example
#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName L_INT LBitmapWindow__RepaintExample(HWND hWndParent) { L_INT nRet; LBitmapWindow LeadBWnd ; L_UINT uZoomMode ; RECT rectZoom ; nRet = LeadBWnd.Load(MAKE_IMAGE_PATH(TEXT("image1.cmp"))); if (nRet == SUCCESS) { if (LeadBWnd.CreateWnd(hWndParent, TRUE, 0, 0, 100, 100) == NULL) return 0; if (LeadBWnd.IsAutoPaintEnabled() == FALSE) { // stop paint LeadBWnd.EnableAutoPaint(TRUE) ; } /* repaint the image, but paint stopped, then the Repaint will not paint the image */ LeadBWnd.Repaint() ; // start paint with new updates LeadBWnd.EnableAutoPaint(FALSE) ; // repaint the image LeadBWnd.Repaint() ; // get zoom mode for current bitmap window uZoomMode = LeadBWnd.GetZoomMode(); if (uZoomMode != ZOOM_FACTOR) { uZoomMode = ZOOM_FITHEIGHT ; // change the zoom mode for current bitmap window nRet =LeadBWnd.SetZoomMode(uZoomMode) ; if(nRet !=SUCCESS) return nRet; } //... //... if (LeadBWnd.GetHorzLineStep() != 2) LeadBWnd.SetHorzLineStep(2) ; if (LeadBWnd.GetVertLineStep() != 2) LeadBWnd.SetVertLineStep(2) ; // check if auto scroll bars is enable or not if (LeadBWnd.IsAutoScrollEnabled() == FALSE) LeadBWnd.EnableAutoScroll(TRUE) ; // fill zoom rect to use it in ZoomToRect rectZoom.left = 50 ; rectZoom.top = 50 ; rectZoom.right = 75 ; rectZoom.bottom= 75 ; nRet =LeadBWnd.ZoomToRect(rectZoom) ; if(nRet !=SUCCESS) return nRet; //... //... // use ScrollBars (Horizontal & Vertical) // 10 = the distance to scroll the bitmap horizontally. // 20 = the distance to scroll the bitmap horizontally. LeadBWnd.ScrollBy( 10, 20) ; // go to 10 position on horizontal scroll in bitmap // go to 20 position on vertical scroll in bitmap LeadBWnd.ScrollTo( 10, 20) ; } else return nRet; return SUCCESS ; }