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ClickOnce Unmanaged API Reference

ClickOnce unmanaged public APIs from dfshim.dll.

Cleans or uninstalls all online applications from the ClickOnce application cache.

If successful, returns S_OK; otherwise, returns an HRESULT that represents the failure. If a managed exception occurs, returns 0x80020009 (DISP_E_EXCEPTION).

Calling CleanOnlineAppCache will start the ClickOnce service if it is not already running.

Retrieves deployment information from the manifest and activation URL.

Parameter

Description

Type

pcwzActivationUrl

A pointer to the ActivationURL.

LPCWSTR

pcwzPathToDeploymentManifest

A pointer to the PathToDeploymentManifest.

LPCWSTR

pwzApplicationIdentity

A pointer to a buffer to receive a NULL-terminated string that specifies the full application identity returned.

LPWSTR

pdwIdentityBufferLength

A pointer to a DWORD that is the length of the pwzApplicationIdentity buffer, in WCHARs. This includes the space for the NULL termination character.

LPDWORD

pwzProcessorArchitecture

A pointer to a buffer to receive a NULL-terminated string that specifies the processor architecture of the application deployment, from the manifest.

LPWSTR

pdwArchitectureBufferLength

A pointer to a DWORD that is the length of the pwzProcessorArchitecture buffer, in WCHARs.

LPDWORD

pwzApplicationManifestCodebase

A pointer to a buffer to receive a NULL-terminated string that specifies the codebase of the application manifest, from the manifest.

LPWSTR

pdwCodebaseBufferLength

A pointer to a DWORD that is the length of the pwzApplicationManifestCodebase buffer, in WCHARs.

LPDWORD

pwzDeploymentProvider

A pointer to a buffer to receive a NULL-terminated string that specifies the deployment provider from the manifest, if present. Otherwise, an empty string is returned.

LPWSTR

pdwProviderBufferLength

A pointer to a DWORD that is the length of the pwzProviderBufferLength.

LPDWORD

If successful, returns S_OK; otherwise, returns an HRESULT that represents the failure. Returns HRESULTFROMWIN32(ERROR_INSUFFICIENT_BUFFER) if a buffer is too small.

Pointers must not be null. pcwzActivationUrl and pcwzPathToDeploymentManifest must not be empty.

It is the caller's responsibility to clean up the activation URL. For example, adding escape characters where they are needed or removing the query string.

It is the caller's responsibility to limit the input length. For example, the maximum URL length is 2KB.

Launches or installs an application by using a deployment URL.

Parameter

Description

Type

deploymentUrl

A pointer to a NULL-terminated string that contains the URL of the deployment manifest.

LPCWSTR

data

Reserved for future use. Must be NULL.

LPVOID

flags

Reserved for future use. Must be 0.

DWORD

If successful, returns S_OK; otherwise, returns an HRESULT that represents the failure. If a managed exception occurs, returns 0x80020009 (DISP_E_EXCEPTION).

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