A button with rollover behavior using C++

• Download demo project - 37 Kb

Introduction

CRolloverButton is a CButton derived class. It provides a button with rollover
behavior known from many webpages. The bitmaps must consist of three pictures
for the different states (using the following order normal, rollover, disabled) of the
button.

Usage of CRolloverButton

• In you resource editor create a button (do not set the 'owner draw' property).
• Use classwizard to create a CButton object in your dialog.
• Include the "rolloverbutton.h" file in your dialog class file.
• Rename the CButton object type to CRolloverButton.
• Call the SetBitmaps function in order to assign your bitmap to the new button

SetBitmaps

CRolloverButton::SetBitmaps( UINT nID, int nWidth, int nHeight, COLORREF crTransparentMask )

• nID -  ID of  a bitmap resource
• nWidth - Width of one image
• nHeight - Height of your image
• crTransparentMask - color displayed transparently (normaly RGB(255, 255, 255) Magenta)

Example

          
BOOL CButtonTestDlg::OnInitDialog()
{
  CDialog::OnInitDialog();
  m_btn_OK.SetBitmaps(IDB_BITMAP1, 18, 20, RGB(255, 0, 255));
  return TRUE;
}

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