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Fixed installer problem when uninstall didn't work.

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git-svn-id: http://svn.code.sf.net/p/greenshot/code/trunk@1895 7dccd23d-a4a3-4e1f-8c07-b4c1b4018ab4
This commit is contained in:
RKrom 2012-05-22 08:41:40 +00:00
commit 3c61d87780
1 changed files with 58 additions and 51 deletions
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109
Greenshot/releases/innosetup/setup.iss
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@ -218,65 +218,75 @@ Name: "languages\zhTW"; Description: "繁體中文"; Types: Full; Check: hasLang
/////////////////////////////////////////////////////////////////////
// The following uninstall code was found at:
// http://stackoverflow.com/questions/2000296/innosetup-how-to-automatically-uninstall-previous-installed-version
// and than modified to work in a 32/64 bit environment
/////////////////////////////////////////////////////////////////////
function GetUninstallString(): String;
function GetUninstallStrings(): array of String;
var
sUnInstPath: String;
sUnInstallString: String;
asUninstallStrings : array of String;
index : Integer;
begin
sUnInstPath := ExpandConstant('Software\Microsoft\Windows\CurrentVersion\Uninstall\{#emit SetupSetting("AppId")}_is1');
sUnInstallString := '';
// Retrieve uninstall string from HKLM(32/64) or HKCU(32/64)
if not RegQueryStringValue(HKLM32, sUnInstPath, 'UninstallString', sUnInstallString) then
if not RegQueryStringValue(HKCU32, sUnInstPath, 'UninstallString', sUnInstallString) then
if IsWin64 then
if not RegQueryStringValue(HKLM64, sUnInstPath, 'UninstallString', sUnInstallString) then
RegQueryStringValue(HKCU64, sUnInstPath, 'UninstallString', sUnInstallString);
Result := sUnInstallString;
end;
index := 0;
// Retrieve uninstall string from HKLM32 or HKCU32
if RegQueryStringValue(HKLM32, sUnInstPath, 'UninstallString', sUnInstallString) then
begin
SetArrayLength(asUninstallStrings, index + 1);
asUninstallStrings[index] := sUnInstallString;
index := index +1;
end;
/////////////////////////////////////////////////////////////////////
function IsUpgrade(): Boolean;
begin
Result := (GetUninstallString() <> '');
end;
/////////////////////////////////////////////////////////////////////
function UnInstallOldVersion(): Integer;
var
sUnInstallString: String;
iTries: Integer;
iResultCode: Integer;
begin
// Return Values:
// 1 - uninstall string is empty
// 2 - error executing the UnInstallString
// 3 - successfully executed the UnInstallString
// default return value
Result := 0;
iTries := 5;
// Uninstall while we find a uninstall string
while (Result <> 1) or (iTries = 0) do begin
iTries := iTries - 1;
// get the uninstall string of the old app
sUnInstallString := GetUninstallString();
if sUnInstallString <> '' then
if RegQueryStringValue(HKCU32, sUnInstPath, 'UninstallString', sUnInstallString) then
begin
SetArrayLength(asUninstallStrings, index + 1);
asUninstallStrings[index] := sUnInstallString;
index := index +1;
end;
// Only for Windows with 64 bit support: Retrieve uninstall string from HKLM64 or HKCU64
if IsWin64 then
begin
if RegQueryStringValue(HKLM64, sUnInstPath, 'UninstallString', sUnInstallString) then
begin
sUnInstallString := RemoveQuotes(sUnInstallString);
if Exec(sUnInstallString, '/SILENT /NORESTART /SUPPRESSMSGBOXES','', SW_HIDE, ewWaitUntilTerminated, iResultCode) then
Result := 3
else
Result := 2;
// Wait a few seconds to prevent installation issues, otherwise files are removed in one process while the other tries to link to them
Sleep(2000);
end else
SetArrayLength(asUninstallStrings, index + 1);
asUninstallStrings[index] := sUnInstallString;
index := index +1;
end;
if RegQueryStringValue(HKCU64, sUnInstPath, 'UninstallString', sUnInstallString) then
begin
Result := 1;
SetArrayLength(asUninstallStrings, index + 1);
asUninstallStrings[index] := sUnInstallString;
index := index +1;
end;
end;
Result := asUninstallStrings;
end;
/////////////////////////////////////////////////////////////////////
procedure UnInstallOldVersions();
var
sUnInstallString: String;
index: Integer;
isUninstallMade: Boolean;
iResultCode : Integer;
asUninstallStrings : array of String;
begin
isUninstallMade := false;
asUninstallStrings := GetUninstallStrings();
for index := 0 to (GetArrayLength(asUninstallStrings) -1) do
begin
sUnInstallString := RemoveQuotes(asUninstallStrings[index]);
if Exec(sUnInstallString, '/SILENT /NORESTART /SUPPRESSMSGBOXES','', SW_HIDE, ewWaitUntilTerminated, iResultCode) then
isUninstallMade := true;
end;
// Wait a few seconds to prevent installation issues, otherwise files are removed in one process while the other tries to link to them
if (isUninstallMade) then
Sleep(2000);
end;
/////////////////////////////////////////////////////////////////////
@ -284,10 +294,7 @@ procedure CurStepChanged(CurStep: TSetupStep);
begin
if (CurStep=ssInstall) then
begin
if (IsUpgrade()) then
begin
UnInstallOldVersion();
end;
UnInstallOldVersions();
end;
end;
/////////////////////////////////////////////////////////////////////