RestoreDC function (wingdi.h)

The RestoreDC function restores a device context (DC) to the specified state. The DC is restored by popping state information off a stack created by earlier calls to the SaveDC function.

Syntax

BOOL RestoreDC(
  [in] HDC hdc,
  [in] int nSavedDC
);

Parameters

[in] hdc

A handle to the DC.

[in] nSavedDC

The saved state to be restored. If this parameter is positive, nSavedDC represents a specific instance of the state to be restored. If this parameter is negative, nSavedDC represents an instance relative to the current state. For example, -1 restores the most recently saved state.

Return value

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero.

Remarks

Each DC maintains a stack of saved states. The SaveDC function pushes the current state of the DC onto its stack of saved states. That state can be restored only to the same DC from which it was created. After a state is restored, the saved state is destroyed and cannot be reused. Furthermore, any states saved after the restored state was created are also destroyed and cannot be used. In other words, the RestoreDC function pops the restored state (and any subsequent states) from the state information stack.

Requirements

See also

Device Context Functions

Device Contexts Overview

SaveDC