CANVASRESIZEDLGPARAMS

typedef struct _CANVASRESIZEDLGPARAMS 
{ 
   L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_INT nCurrentWidth; 
   L_INT nCurrentHeight; 
   POINT ptTopLeft; 
   L_INT nNewWidth; 
   L_INT nNewHeight; 
   COLORREF crBkgnd; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 
} CANVASRESIZEDLGPARAMS,  * LPCANVASRESIZEDLGPARAMS; 

The CANVASRESIZEDLGPARAMS structure provides information used to initialize the dialog box created by the LDialogImage::DoModalCanvasResize function. After the user closes the dialog box, this structure is updated with information about the user's selections.

Member Description
uStructSize Size of this structure, in bytes. Use the sizeof operator to calculate this value.
pBitmap Ignored.
nCurrentWidth A variable that contains the value to be displayed in the Current Width static control. This value may be equal to the bitmap width.
nCurrentHeight A variable that contains the value to be displayed in the Current Height static control. This value may be equal to the bitmap height.
ptTopLeft A POINT structure that contains the top left coordinates of the bitmap within its new canvas. This point is relative to the bitmap, and will not exceed the bitmap's width or height.
nNewWidth A variable to be updated with the new width set by the user.
nNewHeight A variable to be updated with the new height set by the user.
crBkgnd A COLORREF variable to be updated with the background color. You can specify a COLORREF value, such as the return value of the Windows RGB macro, or you can use the PALETTEINDEX macro to specify a palette color.
uDlgFlags User interface flags for this dialog, which determine the layout and action of the dialog. Possible values are:
  Value Meaning
  DLG_CANVASRESIZE_SHOW_CONTEXTHELP [0x00000002] dialog should contain a context sensitive help icon.
  DLG_CANVASRESIZE_SHOW_CURRENT_HEIGHT [0x00000004] dialog should contain the Current Height static control.
  DLG_CANVASRESIZE_SHOW_CURRENT_WIDTH [0x00000008] Dialog should contain the Current Width static control.
  DLG_CANVASRESIZE_SHOW_HORIZPOS [0x00000010] dialog should contain the Horizontal position.
DLG_CANVASRESIZE_SHOW_VERTZPOS [0x00000020] dialog should contain the Vertical position.
  DLG_CANVASRESIZE_SHOW_BACKCOLOR [0x00000040] dialog should contain a background color picker button.
  DLG_CANVASRESIZE_SHOW_KEEPASPECT [0x00000080] dialog should contain the Maintain Aspect Ratio check box.
pfnHelpCallback Ignored.
pHelpCallBackUserData Ignored.
Help Version 20.0.2019.11.25
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